View Filing Data

Unsecured senior notes, net of discount

1,737,881

1,441,072

266,400

794,485

947,132

Accounts payable and other accrued liabilities

10,500

616,042

315,133

Accrued dividends and distributions

75,455

Acquired below market leases, net

152,876

85,819

Security deposits and prepaid rents

136,051

101,538

Total liabilities

4,985,042

3,518,155

Commitments and contingencies

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Common Stock: $0.01 par value, 165,000,000 shares authorized, 123,261,390 and 106,039,279 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively

1,228

1,057

Additional paid-in capital

3,536,463

2,496,651

Accumulated dividends in excess of earnings

(610,337)

(488,692)

Accumulated other comprehensive loss, net

(24,524)

(55,880)

Total stockholders' equity

3,479,443

2,522,917

Noncontrolling Interests:

Noncontrolling interests in operating partnership

44,141

45,057

Noncontrolling interests in consolidated joint ventures

3,972

12,437

Total noncontrolling interests

48,113

57,494

Total equity

3,527,556

2,580,411

Total liabilities and equity

8,512,598

6,098,566

Buildings and improvements

ASSETS

Land

621,279

555,113

Acquired ground leases

13,492

6,214

7,363,430

5,253,754

Tenant improvements

383,627

303,502

Total investments in properties

8,381,828

6,118,583

Accumulated depreciation and amortization

(1,116,600)

(900,044)

Net investments in properties

7,265,228

5,218,539

Investment in unconsolidated joint ventures

48,882

23,976

Net investments in real estate

7,314,110

5,242,515

Cash and cash equivalents

76,115

40,631

Accounts and other receivables, net of allowance for doubtful accounts of $2,362 and $2,436 as of September 30, 2012 and December 31, 2011, respectively

146,025

90,580

Deferred rent

301,535

246,815

Acquired above market leases, net

68,269

29,701

Acquired in place lease value and deferred leasing costs, net

492,393

335,381

Deferred financing costs, net

32,163

29,849

Restricted cash

43,217

55,165

Other assets

38,771

27,929

Total assets

8,512,598

6,098,566

Unsecured senior notes, net of discount

1,737,881

1,441,072

266,400

794,485

947,132

Accounts payable and other accrued liabilities

10,500

616,042

315,133

Accrued dividends and distributions

75,455

Acquired below market leases, net

152,876

85,819

Security deposits and prepaid rents

136,051

101,538

Total liabilities

4,985,042

3,518,155

Commitments and contingencies

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

123,261,390 and 106,039,279 common units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively

2,927,354

2,009,016

Limited partners, 3,131,814 and 3,405,814 common units, 1,075,028 and 1,054,473 profits interest units and 419,226 and 475,843 class C units outstanding as of September 30, 2012 and December 31, 2011, respectively

47,228

49,240

Accumulated other comprehensive loss, net

(27,611)

(60,063)

Total partners' capital

3,523,584

2,567,974

Noncontrolling Interests:

Noncontrolling interests in consolidated joint ventures

3,972

12,437

Total capital

3,527,556

2,580,411

Total liabilities and capital

8,512,598

6,098,566

Series C Cumulative Convertible Preferred Units [Member]

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series C Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

123,820

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series D Cumulative Convertible Preferred Units [Member]

123,820

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

123,250

168,669

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series E Cumulative Convertible Preferred Units [Member]

123,250

168,669

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

277,172

277,292

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series F Cumulative Convertible Preferred Units [Member]

277,172

277,292

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

176,191

Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:

Global Revolving Credit Facility [Member]

176,191

Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

526,372

275,106

Unsecured Term Loan [Member]

526,372

^[1]

$ 275,106

Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

754,935

$ 754,935

[1]	Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Accounts and other receivables, allowance for doubtful accounts	$ 2,362	$ 2,436
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, authorized	30,000,000	30,000,000
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, authorized	165,000,000	165,000,000
Common Stock, shares issued	123,261,390	106,039,279
Common Stock, shares outstanding	123,261,390	106,039,279
Series C Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	4.375%	4.375%
Preferred Stock, liquidation preference value	$ 0	$ 128,159
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	0	5,126,364
Preferred Stock, outstanding	0	5,126,364
Series D Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	5.50%	5.50%
Preferred Stock, liquidation preference value	$ 127,447	$ 174,426
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	5,097,898	6,977,055
Preferred Stock, outstanding	5,097,898	6,977,055
Series E Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference value	$ 287,500	$ 287,500
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	11,500,000	11,500,000
Preferred Stock, outstanding	11,500,000	11,500,000
Series F Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	6.625%	6.625%
Preferred Stock, liquidation preference value	$ 182,500	$ 0
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	7,300,000	0
Preferred Stock, outstanding	7,300,000	0
Digital Realty Trust, L.P. [Member]
Accounts and other receivables, allowance for doubtful accounts	$ 2,362	$ 2,436
Common Units, issued	123,261,390	106,039,279
Common Units, outstanding	123,261,390	106,039,279
Limited Partners, common units	3,131,814	3,405,814
Limited Partners, profits interest units	1,075,028	1,054,473
Limited Partners, Class C units outstanding	419,226	475,843
Digital Realty Trust, L.P. [Member] \| Series C Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	4.375%	4.375%
Preferred Stock, liquidation preference value	$ 0	$ 128,159
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	0	5,126,364
Preferred Units, outstanding	0	5,126,364
Digital Realty Trust, L.P. [Member] \| Series D Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	5.50%	5.50%
Preferred Stock, liquidation preference value	$ 127,447	$ 174,426
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	5,097,898	6,977,055
Preferred Units, outstanding	5,097,898	6,977,055
Digital Realty Trust, L.P. [Member] \| Series E Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference value	$ 287,500	$ 287,500
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	11,500,000	11,500,000
Preferred Units, outstanding	11,500,000	11,500,000
Digital Realty Trust, L.P. [Member] \| Series F Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	6.625%	6.625%
Preferred Stock, liquidation preference value	$ 182,500	$ 0
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	7,300,000	0
Preferred Units, outstanding	7,300,000	0

Condensed Consolidated Income Statements - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues:
Rental	$ 260,052	$ 206,846	$ 717,809	$ 606,447
Tenant reimbursements	78,878	56,656	197,162	159,801
Construction management	2,497	9,372	6,903	24,948
Other	1,052	602	7,457	902
Total operating revenues	342,479	273,476	929,331	792,098
Operating Expenses:
Rental property operating and maintenance	106,660	82,164	274,081	226,224
Property taxes	17,982	13,055	49,793	40,488
Insurance	2,463	1,961	6,953	6,010
Construction management	623	7,391	1,412	20,327
Depreciation and amortization	101,840	79,047	274,835	229,813
General and administrative	14,409	14,600	43,768	41,082
Transactions	504	3,632	5,789	5,053
Other	923		1,260	90
Total operating expenses	245,404	201,850	657,891	569,087
Operating income	97,075	71,626	271,440	223,011
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	1,520	1,390	6,402	3,656
Interest and other income	83	2,218	2,008	2,862
Interest expense	(41,047)	(37,078)	(116,758)	(112,494)
Tax expense	(710)	(461)	(2,637)	(1,122)
Loss from early extinguishment of debt		(6)	(303)	(984)
Net income	56,921	37,689	160,152	114,929
Net income attributable to noncontrolling interests	(1,529)	(1,345)	(4,384)	(4,380)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	(55,392)	(36,344)	(155,768)	(110,549)
DividendsPreferredStock	9,777	4,436	28,921	15,671
Net income available to common stockholders/unitholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97
Weighted average common shares/units outstanding:
Basic	122,026,421	100,588,235	112,995,512	96,137,611
Diluted	122,353,511	101,912,342	113,275,221	97,316,650
Digital Realty Trust, L.P. [Member]
Operating Revenues:
Rental	$ 260,052	$ 206,846	$ 717,809	$ 606,447
Tenant reimbursements	78,878	56,656	197,162	159,801
Construction management	2,497	9,372	6,903	24,948
Other	1,052	602	7,457	902
Total operating revenues	342,479	273,476	929,331	792,098
Operating Expenses:
Rental property operating and maintenance	106,660	82,164	274,081	226,224
Property taxes	17,982	13,055	49,793	40,488
Insurance	2,463	1,961	6,953	6,010
Construction management	623	7,391	1,412	20,327
Depreciation and amortization	101,840	79,047	274,835	229,813
General and administrative	14,409	14,600	43,768	41,082
Transactions	504	3,632	5,789	5,053
Other	923		1,260	90
Total operating expenses	245,404	201,850	657,891	569,087
Operating income	97,075	71,626	271,440	223,011
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	1,520	1,390	6,402	3,656
Interest and other income	83	2,218	2,008	2,862
Interest expense	(41,047)	(37,078)	(116,758)	(112,494)
Tax expense	(710)	(461)	(2,637)	(1,122)
Loss from early extinguishment of debt		(6)	(303)	(984)
Net income	56,921	37,689	160,152	114,929
Net loss attributable to noncontrolling interests in consolidated joint ventures	45	76	437	275
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	56,966	37,765	160,589	115,204
DividendsPreferredStock	9,777	4,436	28,921	15,671
Net income available to common stockholders/unitholders	$ 47,189	$ 33,329	$ 131,668	$ 99,533
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97
Weighted average common shares/units outstanding:
Basic	126,242,751	105,069,280	117,291,480	100,845,740
Diluted	126,569,841	106,393,387	117,571,189	102,024,779

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 56,921	$ 37,689	$ 160,152	$ 114,929
Other comprehensive income (loss):
Foreign currency translation adjustments	34,985	(35,580)	36,286	(10,543)
Decrease in fair value of interest rate swaps	(3,906)	(2,089)	(6,794)	(3,036)
Reclassification to interest expense from interest rate swaps	1,174	1,293	2,964	4,467
Comprehensive income	89,174	1,313	192,608	105,817
Comprehensive (income) loss attributable to noncontrolling interests	(2,605)	207	(5,484)	(4,180)
Comprehensive income attributable to Digital Realty Trust, Inc./L.P	86,569	1,520	187,124	101,637
Digital Realty Trust, L.P. [Member]
Net income	56,921	37,689	160,152	114,929
Other comprehensive income (loss):
Foreign currency translation adjustments	34,985	(35,580)	36,286	(10,543)
Decrease in fair value of interest rate swaps	(3,906)	(2,089)	(6,794)	(3,036)
Reclassification to interest expense from interest rate swaps	1,174	1,293	2,964	4,467
Comprehensive income	$ 89,174	$ 1,313	$ 192,608	$ 105,817

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

Net of tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e637-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e689-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 24
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 18, 19
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 31, 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4591552-111686

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4591551-111686

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 29
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A1, A4, A5
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Condensed Consolidated Statement Of Equity - 9 months ended Sep. 30, 2012 - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Dividends In Excess Of Earnings [Member]	Accumulated Other Comprehensive Loss, Net [Member]	Total Stockholders' Equity [Member]	Noncontrolling Interests In Operating Partnership [Member]	Noncontrolling Interests In Consolidated Joint Ventures [Member]	Total Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2011	$ 569,781	$ 1,057	$ 2,496,651	$ (488,692)	$ (55,880)	$ 2,522,917	$ 45,057	$ 12,437	$ 57,494	$ 2,580,411
Balance (shares) at Dec. 31, 2011		106,039,279
Conversion of units to common stock		$ 5	4,893			4,898	(4,898)		(4,898)
Conversion of units to common stock (shares)		460,192
Issuance of restricted stock, net of forfeitures (shares)		93,276
Net proceeds from issuance of common stock		$ 125	859,786			859,911				859,911
Net proceeds from issuance of common stock (shares)		12,456,818
Exercise of stock options		$ 1	4,172			4,173				$ 4,173
Exercise of stock options (shares)		207,550								207,550
Issuance of series F preferred stock, net of offering costs	176,071					176,071				$ 176,071
Conversion of convertible preferred stock/units	(169,239)	$ 40	169,199
Conversion of convertible preferred stock/units (shares)		4,004,275
Amortization of unearned compensation regarding share based awards			12,339			12,339				12,339
Reclassification of vested share based awards			(8,544)			(8,544)	8,544		8,544
Dividends declared on preferred stock				(28,921)		(28,921)				(28,921)
Dividends and distributions on common stock and common and incentive units				(248,492)		(248,492)	(10,483)		(10,483)	(258,975)
Contributions from noncontrolling interests in consolidated joint ventures								2,323	2,323	2,323
Purchase of noncontrolling interests in consolidated joint venture			(2,033)			(2,033)		(10,351)	(10,351)	(12,384)
Net income				155,768		155,768	4,821	(437)	4,384	160,152
Other comprehensive income (loss) - foreign currency translation adjustments					35,053	35,053	1,233		1,233	36,286
Other comprehensive income (loss) - fair value of interest rate swaps					(6,553)	(6,553)	(241)		(241)	(6,794)
Reclassification to interest expense from interest rate swaps					2,856	2,856	108		108	2,964
Balance at Sep. 30, 2012	$ 576,613	$ 1,228	$ 3,536,463	$ (610,337)	$ (24,524)	$ 3,479,443	$ 44,141	$ 3,972	$ 48,113	$ 3,527,556
Balance (shares) at Sep. 30, 2012		123,261,390

Condensed Consolidated Statement Of Capital - USD ($)	3 Months Ended	9 Months Ended
Condensed Consolidated Statement Of Capital - USD ($)	Sep. 30, 2012	Sep. 30, 2012
Balance (units)		106,039,279
Conversion of limited partner common units to general partner common units		$ 4,898,000
Net proceeds from issuance of common stock		859,911,000
Net proceeds from issuance of preferred units		176,071,000
Amortization of unearned compensation regarding share based awards		12,339,000
Net income	$ 56,921,000	160,152,000
Other comprehensive income (loss) - foreign currency translation adjustments	34,985,000	36,286,000
Other comprehensive income (loss) - fair value of interest rate swaps	(3,906,000)	(6,794,000)
Reclassification to interest expense from interest rate swaps	$ 1,174,000	$ 2,964,000
Balance (units)	123,261,390	123,261,390
Digital Realty Trust, L.P. [Member]
Balance		$ 2,580,411,000
Net proceeds from issuance of common stock		859,911,000
Issuance of common units in connection with the exercise of stock options		4,173,000
Net proceeds from issuance of preferred units		176,071,000
Amortization of unearned compensation regarding share based awards		12,339,000
Distributions		(287,896,000)
Purchase of noncontrolling interests in consolidated joint venture		(12,384,000)
Contributions from noncontrolling interests in consolidated joint ventures		2,323,000
Net income	$ 56,921,000	160,152,000
Other comprehensive income (loss) - foreign currency translation adjustments	34,985,000	36,286,000
Other comprehensive income (loss) - fair value of interest rate swaps	(3,906,000)	(6,794,000)
Reclassification to interest expense from interest rate swaps	1,174,000	2,964,000
Balance	3,527,556,000	3,527,556,000
Accumulated Other Comprehensive Loss, Net [Member] \| Digital Realty Trust, L.P. [Member]
Balance		(60,067,000)
Other comprehensive income (loss) - foreign currency translation adjustments		36,286,000
Other comprehensive income (loss) - fair value of interest rate swaps		(6,794,000)
Reclassification to interest expense from interest rate swaps		2,964,000
Balance	(27,611,000)	(27,611,000)
Noncontrolling Interests In Consolidated Joint Ventures [Member] \| Digital Realty Trust, L.P. [Member]
Balance		12,437,000
Purchase of noncontrolling interests in consolidated joint venture		(10,351,000)
Contributions from noncontrolling interests in consolidated joint ventures		2,323,000
Net income		(437,000)
Balance	3,972,000	3,972,000
General Partner [Member] \| Preferred Units [Member] \| Digital Realty Trust, L.P. [Member]
Balance		$ 569,781,000
Balance (units)		23,603,419
Net proceeds from issuance of preferred units		$ 176,071,000
Net proceeds from issuance of preferred units		7,300,000
Conversion of convertible preferred stock/units		$ (169,239,000)
Conversion of convertible preferred stock/units (shares)		(7,005,521)
Distributions		$ (28,921,000)
Net income		28,921,000
Balance	$ 576,613,000	$ 576,613,000
Balance (units)	23,897,898	23,897,898
General Partner [Member] \| Common Units [Member] \| Digital Realty Trust, L.P. [Member]
Balance		$ 2,009,016,000
Balance (units)		106,039,279
Conversion of limited partner common units to general partner common units		$ 4,898,000
Conversion of limited partner common units to general partner common units (units)		460,192
Issuance of restricted common units, net of forfeitures (units)		93,276
Net proceeds from issuance of common stock		$ 859,911,000
Net proceeds from issuance of common stock (shares)		12,456,818
Issuance of common units in connection with the exercise of stock options		$ 4,173,000
Issuance of common units in connection with the exercise of stock options (units)		207,550
Conversion of convertible preferred stock/units		$ 169,239,000
Conversion of convertible preferred stock/units (shares)		4,004,275
Amortization of unearned compensation regarding share based awards		$ 12,339,000
Reclassification of vested share based awards		(8,544,000)
Distributions		(248,492,000)
Purchase of noncontrolling interests in consolidated joint venture		(2,033,000)
Net income		126,847,000
Balance	$ 2,927,354,000	$ 2,927,354,000
Balance (units)	123,261,390	123,261,390
Limited Partner [Member] \| Common Units [Member] \| Digital Realty Trust, L.P. [Member]
Balance		$ 49,244,000
Balance (units)		4,936,130
Conversion of limited partner common units to general partner common units		$ (4,898,000)
Conversion of limited partner common units to general partner common units (units)		(460,192)
Issuance of common units, net of forfeitures (units)		150,130
Reclassification of vested share based awards		$ 8,544,000
Distributions		(10,483,000)
Net income		4,821,000
Balance	$ 47,228,000	$ 47,228,000
Balance (units)	4,626,068	4,626,068

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 160,152	$ 114,929
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt-non cash portion		558
Equity in earnings of unconsolidated joint ventures	(6,402)	(3,656)
Distributions from unconsolidated joint ventures	18,573	3,250
Write-off of net assets due to early lease terminations	1,260	81
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	226,739	181,499
Amortization of share-based unearned compensation	9,922	10,263
Allowance for (recovery of) doubtful accounts	(74)	(1,090)
Amortization of deferred financing costs	6,341	7,246
Write-off of deferred financing costs, included in net loss on early extinguishment of debt	254	85
Amortization of debt discount/premium	748	1,813
Amortization of acquired in place lease value and deferred leasing costs	48,096	48,313
Amortization of acquired above market leases and acquired below market leases, net	(7,443)	(5,663)
Changes in assets and liabilities:
Restricted cash	6,866	288
Accounts and other receivables	(52,851)	(9,610)
Deferred rent	(55,772)	(41,220)
Deferred leasing costs	(13,206)	(7,200)
Other assets	(13,107)	(11,389)
Accounts payable and other accrued liabilities	(7,194)	(6,859)
Security deposits and prepaid rents	33,634	(1,540)
Net cash provided by operating activities	356,536	280,098
Cash flows from investing activities:
Acquisitions of real estate	(1,451,598)	(86,567)
Investment in unconsolidated joint ventures	(37,069)	(382)
Deposits paid for acquisitions of real estate	(500)	(10,066)
Receipt of value added tax refund	15,272	9,253
Refundable value added tax paid	(17,611)	(17,859)
Change in restricted cash	3,227	4,604
Improvements to and advances for investments in real estate	(596,644)	(489,709)
Improvement advances to tenants	(2,384)	(7,705)
Collection of advances from tenants for improvements	2,379	6,746
Net cash used in investing activities	(2,084,928)	(591,685)
Cash flows from financing activities:
Repayments on revolving credit facilites	(1,271,528)	(1,049,182)
Repayments on other secured loan	(10,500)
Principal payments on mortgage loans	(162,548)	(127,341)
Principal repayments on 2026 exchangeable senior debentures		(88,758)
Principal payments on unsecured notes		(25,000)
Equity component settled associated with exchange of 2026 exchangeable senior debentures		(11,783)
Change in restricted cash	2,011	(73)
Payment of loan fees and costs	(8,859)	(6,593)
Capital contributions received from noncontrolling interests in joint ventures	2,323	119
Gross proceeds from the sale of common stock	894,221	419,619
Gross proceeds from the sale of preferred stock	182,500	287,500
Common stock offering costs paid	(34,310)	(6,027)
Preferred stock offering costs paid	(6,429)	(9,447)
Proceeds from exercise of stock options	(4,173)	(3,416)
Payment of dividends/distributions to preferred stockholders/unitholders	(28,921)	(15,671)
Payment of dividends/distributions to common stockholders/unitholders and distributions to noncontrolling interests in operating partnership	(334,430)	(261,286)
Purchase of noncontrolling interests in consolidated joint venture	12,384	53,240
Net cash provided by financing activities	1,763,876	338,600
Net (decrease) increase in cash and cash equivalents	35,484	27,013
Cash and cash equivalents at beginning of period	40,631	11,719
Cash and cash equivalents at end of period	76,115	38,732
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	135,840	126,664
Cash paid for taxes	2,045	1,568
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	36,286	(10,543)
Decrease (increase) in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	(6,794)	(3,036)
Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock	4,898	6,560
Preferred stock/units converted to shares of common stock/units	169,239	165,160
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	240,310	136,840
Issuance of common units associated with exchange of 2026 exchangeable senior debentures, net		221
Accrual for contingent purchase price of Sentrum portfolio included in accounts payable and accrued expenses	87,532
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	1,336,127	79,424
Acquired above market leases	(44,402)	(178)
Acquired below market leases	(80,604)
Acquired in place lease value and deferred leasing costs	(158,563)	(6,965)
Mortgage loans assumed, net of premium	(6,890)
Cash paid for acquisition of real estate	1,451,598	86,567
5.250% Due 2021 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes		399,100
3.625% Notes Due 2022 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes	296,052
Digital Realty Trust, L.P. [Member]
Cash flows from operating activities:
Net income	160,152	114,929
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt-non cash portion		558
Equity in earnings of unconsolidated joint ventures	(6,402)	(3,656)
Distributions from unconsolidated joint ventures	18,573	3,250
Write-off of net assets due to early lease terminations	1,260	81
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	226,739	181,499
Amortization of share-based unearned compensation	9,922	10,263
Allowance for (recovery of) doubtful accounts	(74)	(1,090)
Amortization of deferred financing costs	6,341	7,246
Write-off of deferred financing costs, included in net loss on early extinguishment of debt	254	85
Amortization of debt discount/premium	748	1,813
Amortization of acquired in place lease value and deferred leasing costs	48,096	48,313
Amortization of acquired above market leases and acquired below market leases, net	(7,443)	(5,663)
Changes in assets and liabilities:
Restricted cash	6,866	288
Accounts and other receivables	(52,851)	(9,610)
Deferred rent	(55,772)	(41,220)
Deferred leasing costs	(13,206)	(7,200)
Other assets	(13,107)	(11,389)
Accounts payable and other accrued liabilities	(7,194)	(6,859)
Security deposits and prepaid rents	33,634	(1,540)
Net cash provided by operating activities	356,536	280,098
Cash flows from investing activities:
Acquisitions of real estate	(1,451,598)	(86,567)
Investment in unconsolidated joint ventures	(37,069)	(382)
Deposits paid for acquisitions of real estate	(500)	(10,066)
Receipt of value added tax refund	15,272	9,253
Refundable value added tax paid	(17,611)	(17,859)
Change in restricted cash	3,227	4,604
Improvements to and advances for investments in real estate	(596,644)	(489,709)
Improvement advances to tenants	(2,384)	(7,705)
Collection of advances from tenants for improvements	2,379	6,746
Net cash used in investing activities	(2,084,928)	(591,685)
Cash flows from financing activities:
Repayments on other secured loan	(10,500)
Principal payments on mortgage loans	(162,548)	(127,341)
Principal repayments on 2026 exchangeable senior debentures		(88,758)
Principal payments on unsecured notes		(25,000)
Equity component settled associated with exchange of 2026 exchangeable senior debentures		11,783
Change in restricted cash	(2,011)	73
Payment of loan fees and costs	(8,859)	(6,593)
Capital contributions received from noncontrolling interests in joint ventures	2,323	119
General partner contributions	1,040,155	695,061
Payment of dividends/distributions to preferred stockholders/unitholders	(28,921)	(15,671)
Payment of dividends/distributions to common stockholders/unitholders and distributions to noncontrolling interests in operating partnership	(334,430)	(261,286)
Purchase of noncontrolling interests in consolidated joint venture	(12,384)	(53,240)
Net cash provided by financing activities	1,763,876	338,600
Net (decrease) increase in cash and cash equivalents	35,484	27,013
Cash and cash equivalents at beginning of period	40,631	11,719
Cash and cash equivalents at end of period	76,115	38,732
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	135,840	126,664
Cash paid for taxes	2,045	1,568
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	36,286	(10,543)
Decrease (increase) in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	(6,794)	(3,036)
Preferred stock/units converted to shares of common stock/units	169,239	165,160
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	240,310	136,840
Issuance of common units associated with exchange of 2026 exchangeable senior debentures, net		221
Accrual for contingent purchase price of Sentrum portfolio included in accounts payable and accrued expenses	87,532
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	1,336,127	79,424
Acquired above market leases	44,402	178
Acquired below market leases	(80,604)
Acquired in place lease value and deferred leasing costs	158,563	6,965
Mortgage loans assumed, net of premium	(6,890)
Cash paid for acquisition of real estate	1,451,598	86,567
Digital Realty Trust, L.P. [Member] \| 5.250% Due 2021 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes		(399,100)
Digital Realty Trust, L.P. [Member] \| 3.625% Notes Due 2022 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes	296,052
Global Revolving Credit Facility [Member]
Cash flows from financing activities:
Borrowings on lines of credit	1,500,520	883,247
Global Revolving Credit Facility [Member] \| Digital Realty Trust, L.P. [Member]
Cash flows from financing activities:
Borrowings on lines of credit	1,500,520	883,247
Repayments on revolving credit facilites	(1,271,528)	$ (1,049,182)
Unsecured Term Loan [Member]
Cash flows from financing activities:
Borrowings on lines of credit	751,985
Unsecured Term Loan [Member] \| Digital Realty Trust, L.P. [Member]
Cash flows from financing activities:
Borrowings on lines of credit	$ 751,985

Condensed Consolidated Statements Of Cash Flows (Parenthetical)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
5.250% Due 2021 [Member]
Interest rate	5.25%	5.25%
Maturity date	2021	2021
5.250% Due 2021 [Member] \| Digital Realty Trust, L.P. [Member]
Interest rate	5.25%	5.25%
Maturity date	2021	2021
3.625% Notes Due 2022 [Member]
Interest rate	3.625%	3.625%
Maturity date	2022	2022
3.625% Notes Due 2022 [Member] \| Digital Realty Trust, L.P. [Member]
Interest rate	3.625%	3.625%
Maturity date	2022	2022

Organization And Description Of Business	9 Months Ended
Organization And Description Of Business	Sep. 30, 2012
Organization And Description Of Business	1. Organization and Description of Business Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the Company) is engaged in the business of owning, acquiring, developing, redeveloping and managing technology-related real estate. The Company is focused on providing customer driven datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. As of September 30, 2012, our portfolio consisted of 110 properties, excluding three properties held as investments in unconsolidated joint ventures and land held for development, of which 91 are located throughout North America, 18 are located in Europe and one is located in Asia. We are diversified in major markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the U.S., Amsterdam, Dublin, London and Paris markets in Europe and Singapore, Sydney and Melbourne markets in the Asia Pacific region. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national headquarters of technology companies. The Operating Partnership was formed on July 21, 2004 in anticipation of Digital Realty Trust, Inc.’s initial public offering (IPO) on November 3, 2004 and commenced operations on that date. As of September 30, 2012, Digital Realty Trust, Inc. owns a 96.4% common interest and a 100% preferred interest in the Operating Partnership. As sole general partner, Digital Realty Trust, Inc. has control over the Operating Partnership. The limited partners of the Operating Partnership do not have rights to replace Digital Realty Trust, Inc. as the general partner nor do they have participating rights, although they do have certain protective rights.
Digital Realty Trust, L.P. [Member]
Organization And Description Of Business	1. Organization and Description of Business Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the Company) is engaged in the business of owning, acquiring, developing, redeveloping and managing technology-related real estate. The Company is focused on providing customer driven datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. As of September 30, 2012, our portfolio consisted of 110 properties, excluding three properties held as investments in unconsolidated joint ventures and land held for development, of which 91 are located throughout North America, 18 are located in Europe and one is located in Asia. We are diversified in major markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the U.S., Amsterdam, Dublin, London and Paris markets in Europe and Singapore, Sydney and Melbourne markets in the Asia Pacific region. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national headquarters of technology companies. The Operating Partnership was formed on July 21, 2004 in anticipation of Digital Realty Trust, Inc.’s initial public offering (IPO) on November 3, 2004 and commenced operations on that date. As of September 30, 2012, Digital Realty Trust, Inc. owns a 96.4% common interest and a 100% preferred interest in the Operating Partnership. As sole general partner, Digital Realty Trust, Inc. has control over the Operating Partnership. The limited partners of the Operating Partnership do not have rights to replace Digital Realty Trust, Inc. as the general partner nor do they have participating rights, although they do have certain protective rights.

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

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Summary Of Significant Accounting Policies

Summary Of Significant Accounting Policies

9 Months Ended

Sep. 30, 2012

2. Summary of Significant Accounting Policies

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2011.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:


	•		enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;


	•		eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and


	•		creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes. The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholder’s equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:


	•		condensed consolidated face financial statements; and


	•		the following notes to the condensed consolidated financial statements:


	•		Debt of the Company and Debt of the Operating Partnership;


	•		Income per Share and Income per Unit; and


	•		Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2012, cash equivalents consist of investments in money market instruments.

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of the possible performance condition outcomes and amortize the compensation cost based on management’s projected performance outcome. In the instance management’s projected performance outcome changes prior to the final measurement date, compensation cost is adjusted accordingly.

(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

However, qualification and taxation as a REIT depend upon the Parent Company’s ability to meet the various qualification tests imposed under the Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Company’s consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered “more-likely-than-not” to be sustained solely on its technical merits, no benefits of the tax position are to be recognized (for financial statement purposes). As of September 30, 2012 and December 31, 2011, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three and nine months ended September 30, 2012 and 2011, we had no such interest or penalties. The tax years 2009 through 2011 remain open to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further discussion on income taxes.

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the end of the economic life of properties that were built before 1984. As of September 30, 2012 and December 31, 2011, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was approximately $1.7 million and $1.2 million, respectively.

(g) Construction Management Revenue

Construction management revenue for long-term contracts are recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs. Otherwise, construction management revenue and expense is reflected net of third party costs. As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.

Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.

(h) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

(j) Capitalization of Costs

Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when the activities necessary to get the development/redevelopment project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development/redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively. Cash flows from capitalized leasing costs of $26.5 million and $19.1 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, respectively.

(k) Management’s Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.

(l) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.

(m) Recent Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Fair Value Measurement (Topic 820). This ASU is intended to create consistency between U.S. GAAP and International Financial Reporting Standards on the definition of fair value and on the guidance on how to measure fair value and on what to disclose about fair value measurements. We adopted this accounting guidance for financial statements issued for fiscal periods beginning after December 15, 2011. This update did not have a material effect on our financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”). This update amends Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income, to provide that total comprehensive income will be reported in one continuous statement or two separate but consecutive statements of financial performance. Presentation of total comprehensive income in the statement of stockholders’ equity (or statement of capital) or the footnotes will no longer be allowed. The calculation of net income and basic and diluted net income per share (or per unit) was not affected. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2011. This update did not have a material effect on our financial statements.

Summary Of Significant Accounting Policies

2. Summary of Significant Accounting Policies

(a) Principles of Consolidation and Basis of Presentation

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:


	•		enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;


	•		eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and


	•		creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.


	•		condensed consolidated face financial statements; and


	•		the following notes to the condensed consolidated financial statements:


	•		Debt of the Company and Debt of the Operating Partnership;


	•		Income per Share and Income per Unit; and


	•		Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

(b) Cash Equivalents

(d) Income Taxes

See Note 9 for further discussion on income taxes.

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

(f) Asset Retirement Obligations

(g) Construction Management Revenue

(h) Assets and Liabilities Measured at Fair Value

(i) Transactions Expense

(j) Capitalization of Costs

(k) Management’s Estimates

(l) Segment Information

(m) Recent Accounting Pronouncements

Investments In Real Estate

9 Months Ended

Sep. 30, 2012

Investments In Real Estate

3. Investments in Real Estate

We acquired the following real estate properties during the nine months ended September 30, 2012:



Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$ 123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$ 1,462.2

(1)	Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2)	9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3)	In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

(4) On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

The Sentrum Portfolio’s aggregate acquisition consideration was allocated as follows, subject to adjustment: $18.1 million to land, $7.0 million to acquired ground lease, $1.2 billion to buildings and improvements, $11.6 million to tenant improvements, $151.6 million to identified intangible assets ($107.2 million associated with in place leases and $44.4 million associated with above market leases) and $38.2 million to identified intangible liabilities associated with below market leases.

Operating revenues of $28.4 million and operating income of $6.8 million from the Sentrum Portfolio are included in the condensed consolidated income statement for the three and nine months ended September 30, 2012.

The following summarizes the expected weighted average remaining lives of acquired intangible assets and liabilities for the Sentrum Portfolio as of September 30, 2012:


	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

The pro forma operating revenues and operating income of the Company, including the Sentrum Portfolio had the acquisition taken place on January 1, 2011 for the following periods are as follows:


	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012 ⁽¹⁾	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011 ⁽¹⁾		305.4		84.1		887.1		260.5


⁽¹⁾	These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

In March 2012, we entered into a joint venture with Savvis, Inc., a CenturyLink company. On June 26, 2012, this unconsolidated joint venture acquired a 164,000 square foot property in Hong Kong. The property is located at Tseung Kwan O Industrial Estate in New Territories, approximately 12 miles from downtown Hong Kong. As of September 30, 2012, we have contributed approximately $20.6 million to the joint venture.

Investments In Real Estate

3. Investments in Real Estate

We acquired the following real estate properties during the nine months ended September 30, 2012:



Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$ 123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$ 1,462.2

(1)	Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2)	9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3)	In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

The following summarizes the expected weighted average remaining lives of acquired intangible assets and liabilities for the Sentrum Portfolio as of September 30, 2012:


	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

The pro forma operating revenues and operating income of the Company, including the Sentrum Portfolio had the acquisition taken place on January 1, 2011 for the following periods are as follows:


	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012 ⁽¹⁾	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011 ⁽¹⁾		305.4		84.1		887.1		260.5


⁽¹⁾	These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

The entire disclosure for real estate and accumulated depreciation. This may include a schedule that describes the property and lists the initial cost of land, buildings and improvements, improvements and carrying costs capitalized after acquisition, and the total carrying cost for land, buildings and improvements for each property and in aggregate. The schedule also lists the accumulated depreciation for each property and in aggregate, the date each property was constructed and acquired, the useful life used to calculate depreciation and any encumbrances on the properties. The entity provides a reconciliation of the carrying amount of real estate from the beginning of the period to the end of the period. Any real estate investments that have been written down or reserved against are described, including the basis of the write-down. A material amount of intercompany profit in the total carrying amount of real estate is disclosed. The aggregate cost of all real estate investments for federal income tax purposes is also disclosed.

Acquired Intangible Assets And Liabilities

Acquired Intangible Assets And Liabilities

9 Months Ended

Sep. 30, 2012

4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of September 30, 2012 and December 31, 2011.



	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)

Net	$	357,372		$	232,910

Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)

Net	$	68,269		$	29,701

Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)

Net	$	152,876		$	85,819

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $2.3 million and $2.0 million for the three months ended September 30, 2012 and 2011, respectively, and $7.4 million and $5.7 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 7.5 years and 5.8 years, respectively, as of September 30, 2012. Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2013 is as follows:



(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Costs associated with extending or renewing acquired leases are capitalized and classified as deferred leasing costs. Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.5 million and $13.5 million for the three months ended September 30, 2012 and 2011, respectively, and $38.9 million and $41.3 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average amortization period for acquired in place lease value is 7.4 years as of September 30, 2012. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 5.9 years as of September 30, 2012. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2013 is as follows:



(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

Acquired Intangible Assets And Liabilities

4. Acquired Intangible Assets and Liabilities



	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)

Net	$	357,372		$	232,910

Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)

Net	$	68,269		$	29,701

Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)

Net	$	152,876		$	85,819



(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613



(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

Debt Of The Company	9 Months Ended
Debt Of The Company	Sep. 30, 2012
Debt Of The Company [Abstract]
Debt Of The Company	5. Debt of the Company In this Note 5, the “Company” refers only to Digital Realty Trust, Inc. and not to any of its subsidiaries. The Company itself does not have any indebtedness. All debt is held directly or indirectly by the Operating Partnership. Guarantee of Debt The Company guarantees the Operating Partnership’s obligations with respect to its 5.50% exchangeable senior debentures due 2029 (2029 Debentures), 4.50% notes due 2015 (2015 Notes), 5.875% notes due 2020 (2020 Notes), 5.25% notes due 2021 (2021 Notes), 3.625% notes due 2022 (2022 Notes) and its unsecured senior notes sold to Prudential Investment Management, Inc. and certain of its affiliates pursuant to the Amended and Restated Note Purchase and Private Shelf Agreement, which we refer to as the Prudential shelf facility. The Company is also the guarantor of the Operating Partnership’s and its subsidiary borrowers’ obligations under its global revolving credit facility and unsecured term loan.

Debt Of The Operating Partnership

9 Months Ended

Sep. 30, 2012

Debt Of The Operating Partnership

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

6. Debt of the Operating Partnership

A summary of outstanding indebtedness of the Operating Partnership as of September 30, 2012 and December 31, 2011 is as follows (in thousands):



Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Global revolving credit facility	Various	(1)	Nov. 3, 2015		$ 526,372	(2)	$ 275,106	(2)

Unsecured term loan	Various	(3)(9)	Apr. 16, 2017		$ 754,935	(4)	$ -

Unsecured senior notes:
Prudential Shelf Facility:
Series B	9.320%		Nov. 5, 2013		33,000		33,000
Series C	9.680%		Jan. 6, 2016		25,000		25,000
Series D	4.570%		Jan. 20, 2015		50,000		50,000
Series E	5.730%		Jan. 20, 2017		50,000		50,000
Series F	4.500%		Feb. 3, 2015		17,000		17,000
Total Prudential Shelf Facility					175,000		175,000
Senior Notes:
4.50% notes due 2015	4.500%		Jul. 15, 2015		375,000		375,000
5.875% notes due 2020	5.875%		Feb. 1, 2020		500,000		500,000
5.25% notes due 2021	5.250%		Mar. 15, 2021		400,000		400,000
3.625% notes due 2022	3.625%		Oct. 1, 2022		300,000		-
Unamortized discounts					(12,119)		(8,928)
Total senior notes, net of discount					1,562,881		1,266,072
Total unsecured senior notes, net of discount					1,737,881		1,441,072

5.50% exchangeable senior debentures due 2029	5.50%		Apr. 15, 2029	(5)	266,400		266,400
Total exchangeable senior debentures					266,400		266,400

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)



Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Mortgage loans:
Secured Term Debt (6)(7)	5.65%		Nov. 11, 2014		136,726		138,828
200 Paul Avenue 1-4 (7)	5.74%		Oct. 8, 2015		73,114		74,458
Mundells Roundabout	3-month GBP LIBOR + 1.20%	(9)	Nov. 30, 2013		69,235	(10)	66,563	(10)
2045 & 2055 LaFayette Street (7)	5.93%		Feb. 6, 2017		64,864		65,551
34551 Ardenwood Boulevard 1-4 (7)	5.95%		Nov. 11, 2016		53,102		53,627
1100 Space Park Drive (7)	5.89%		Dec. 11, 2016		53,078		53,609
1350 Duane Avenue/3080 Raymond Street (7)	5.42%		Oct. 1, 2012	(13)	-		52,800
600 West Seventh Street	5.80%		Mar. 15, 2016		51,566		52,709
150 South First Street (7)	6.30%		Feb. 6, 2017		51,008		51,508
360 Spear Street (7)	6.32%		Nov. 8, 2013		46,862		47,569
114 Rue Ambroise Croizat	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		39,483	(11)
2334 Lundy Place (7)	5.96%		Nov. 11, 2016		38,621		39,003
Clonshaugh Industrial Estate II (8)	3-month EURIBOR + 4.50%	(9)	Sep. 4, 2014		38,580	(11)	38,883	(11)
1500 Space Park Drive (7)	6.15%		Oct. 5, 2013		36,247		37,875
Unit 9, Blanchardstown Corporate Park	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		33,946	(11)
Cressex 1 (12)	5.68%		Oct. 16, 2014		28,529	(10)	27,786	(10)
1201 Comstock Street (7)	1-month LIBOR + 3.50%		Jun. 24, 2012	(13)	-		16,163
Paul van Vlissingenstraat 16	3-month EURIBOR + 1.60%	(9)	Jul. 18, 2013		13,053	(11)	13,319	(11)
2805 Lafayette Street (7)(14)	1-month LIBOR + 4.75%		Jun. 9, 2013	(13)	-		10,000
Chemin de l'Epinglier 2	3-month EURIBOR + 1.50%	(9)	Jul. 18, 2013		9,444	(11)	9,636	(11)
Gyroscoopweg 2E-2F	3-month EURIBOR + 1.50%	(9)	Oct. 18, 2013		8,312	(11)	8,480	(11)
Manchester Technopark (12)	5.68%		Oct. 16, 2014		8,679	(10)	8,453	(10)
8025 North Interstate 35	4.09%		Mar. 6, 2017		6,621		-
731 East Trade Street	8.22%		Jul. 1, 2020		4,586		4,806
Unamortized net premiums					2,258		2,077
Total mortgage loans, net of premiums					794,485		947,132
Other secured loan:
2805 Lafayette Street Mezzanine (7)(14)	1-month LIBOR + 8.50%		Jun. 9, 2013	(13)	-		10,500
Total other secured loan					-		10,500
Total indebtedness					$ 4,080,073		$ 2,940,210


(1)	The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.


2)	Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$ -		0.00%	$ 194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$ 526,372		1.99%	$ 275,106		1.67%


	(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
	(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.


(3)	Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances.


(4)	Balances as of September 30, 2012 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%

	$	754,935			1.89	%


	(a)	Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

(5)

The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the principal amount plus accrued and unpaid interest on each of April 15, 2014, April 15, 2019 and April 15, 2024. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and unpaid interest commencing on April 18, 2014.


(6)	This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.


(7)	The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.


(8)	The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.


(9)	We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollar tranches of the unsecured term loan. See note 13 for further information.


(10)	Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.


(11)	Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.


(12)	These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.



(13)	These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street (May 2012), 2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.
(14)	Property formerly referred to as 800 Central Expressway.

Global Revolving Credit Facility

On November 3, 2011, the Operating Partnership replaced its corporate and Asia Pacific revolving credit facilities with an expanded revolving credit facility, which we refer to as the global revolving credit facility, increasing its total capacity to $1.5 billion from $850 million. The global revolving credit facility has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to $2.25 billion, subject to the receipt of lender commitments. On August 10, 2012, we increased the aggregate commitments under our global revolving credit facility from $1.5 billion to $1.8 billion, pursuant to the partial exercise of the accordion feature. The renewed facility matures in November 2015, with a one-year extension option. The interest rate for borrowings under the expanded facility equals the applicable index plus a margin which is based on the credit rating of our long-term debt and is currently 125 basis points. An annual facility fee on the unused portion of the facility, based on the credit rating of our long-term debt and currently 25 basis points, is payable quarterly. Funds may be drawn in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, Pound Sterling, Swiss Franc and Japanese yen denominations. As of September 30, 2012, borrowings under the global revolving credit facility bore interest at a blended rate of 1.79% (GBP), 1.56% (Singapore Dollars), 4.83% (Australian Dollars) and 1.55% (Hong Kong Dollars), which are based on 1-month GBP LIBOR, 1-month SIBOR, 1-month BBR and 1-month HIBOR, respectively, plus a margin of 1.25%. We have used and intend to use available borrowings under the global revolving credit facility to acquire additional properties, fund development and redevelopment opportunities and to provide for working capital and other corporate purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred equity securities. We capitalized approximately $11.2 million of financing costs related to the global revolving credit facility. As of September 30, 2012, approximately $526.4 million was drawn under this facility and $22.4 million of letters of credit were issued.

The global revolving credit facility contains various restrictive covenants, including limitations on our ability to incur additional indebtedness, make certain investments or merge with another company, and requirements to maintain financial coverage ratios, including with respect to unencumbered assets. In addition, the global revolving credit facility restricts Digital Realty Trust, Inc. from making distributions to its stockholders, or redeeming or otherwise repurchasing shares of its capital stock, after the occurrence and during the continuance of an event of default, except in limited circumstances including as necessary to enable Digital Realty Trust, Inc. to maintain its qualification as a REIT and to minimize the payment of income or excise tax. As of September 30, 2012, we were in compliance with all of such covenants.

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Unsecured Term Loan

On April 17, 2012, we closed a new $750.0 million senior unsecured multi-currency term loan facility. The new facility matures on April 16, 2017. Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances. Funds may be drawn in U.S, Singapore and Australian dollars, as well as Euro and Pound Sterling denominations with the option to add Hong Kong dollars and Yen upon an accordion exercise, subject to the receipt of lender commitments. We had the ability to delay draw up to $250.0 million for up to 90 days from the date of closing. As of June 30, 2012, we had drawn approximately $525 million of the available facility based on exchange rates in effect at the time of each draw. An additional $225 million was drawn against the facility during July 2012 based on exchange rates in effect at the time of the draws. Based on exchange rates in effect at September 30, 2012, the balance outstanding is approximately $754.9 million. We have used borrowings under the term loan for acquisitions, repayment of indebtedness, development and redevelopment, working capital and general corporate purposes. The covenants under this loan are consistent with our global revolving credit facility. We capitalized approximately $5.3 million of financing costs related to the unsecured term loan.

3.625% Notes due 2022

On September 24, 2012, the Operating Partnership issued $300.0 million in aggregate principal amount of notes, maturing on October 1, 2022 with an interest rate of 3.625% per annum (the 2022 Notes). The purchase price paid by the initial purchasers was 98.684% of the principal amount. The 2022 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. Interest on the 2022 Notes is payable on April 1 and October 1 of each year, beginning on April 1, 2013. The net proceeds from the offering after deducting the original issue discount of approximately $3.9 million and underwriting commissions and expenses of approximately $3.0 million was approximately $293.1 million. We used the net proceeds from this offering to temporarily repay borrowings under our global revolving credit facility. The 2022 Notes have been reflected net of discount in the condensed consolidated balance sheet. The indenture governing the 2022 Notes contains certain covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 40% and (3) an interest coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal amount of unsecured debt. At September 30, 2012, we were in compliance with each of these financial covenants.

The table below summarizes our debt maturities and principal payments as of September 30, 2012 (in thousands):



	Global Revolving Credit Facility (1)	Unsecured Term Loan	Unsecured Senior Notes	Senior Notes	Exchangeable Senior Debentures (3)	Mortgage Loans (2)	Total Debt
Remainder of 2012	$ -	$ -	$ -	$ -	$ -	$ 3,765	$ 3,765
2013	-	-	33,000	-	-	193,837	226,837
2014	-	-	-	-	266,400	216,388	482,788
2015	526,372	-	67,000	375,000	-	75,493	1,043,865
2016	-	-	25,000	-	-	191,979	216,979
Thereafter	-	754,935	50,000	1,200,000	-	110,765	2,115,700
Subtotal	$ 526,372	$ 754,935	$ 175,000	$ 1,575,000	$ 266,400	$ 792,227	$ 4,089,934
Unamortized discount	-	-	-	(12,119)	-	-	(12,119)
Unamortized premium	-	-	-	-	-	2,258	2,258
Total	$ 526,372	$ 754,935	$ 175,000	$ 1,562,881	$ 266,400	$ 794,485	$ 4,080,073


(1)	Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

(2)

Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).


(3)	Assumes maturity of the 2029 Debentures at their first redemption date in April 2014.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

Income Per Share

9 Months Ended

Sep. 30, 2012

Income Per Share [Abstract]

Income Per Share

7. Income per Share

The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common stockholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average shares outstanding—basic	122,026,421	100,588,235	112,995,512	96,137,611
Potentially dilutive common shares:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average shares outstanding—diluted	122,353,511	101,912,342	113,275,221	97,316,650
Income per share:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

During the year ended December 31, 2011, the Operating Partnership’s remaining 4.125% exchangeable senior debentures due August 15, 2026 (2026 Debentures) were redeemed and exchanged. On or after July 15, 2026, the 2026 Debentures would have been exchangeable at the then-applicable exchange rate for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. The 2026 Debentures also would have been exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events, including if the weighted average common stock price exceeded a specified strike price as of the end of a fiscal quarter. Using the treasury stock method, 494,292 shares of common stock contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common shares in determining diluted earnings per share for the nine months ended September 30, 2011.

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	4,345,574	4,481,045	4,346,586	4,708,129
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Stock	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Stock	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Stock	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable Preferred Stock	2,632,647	-	1,243,998	-
	21,863,563	19,237,146	21,504,743	20,890,149

Income Per Unit

9 Months Ended

Sep. 30, 2012

Income Per Unit

8. Income per Unit

The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common unitholders	$ 47,189	$ 33,329	$ 131,668	$ 99,533
Weighted average units outstanding--basic	126,242,751	105,069,280	117,291,480	100,845,740
Potentially dilutive common units:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred units	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average units outstanding--diluted	126,569,841	106,393,387	117,571,189	102,024,779
Income per unit:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

During the year ended December 31, 2011, the remaining 2026 Debentures were redeemed and exchanged. On or after July 15, 2026, the 2026 Debentures would have been exchangeable at the then-applicable exchange rate for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. Pursuant to the terms of the Operating Partnership’s agreement of limited partnership, the Operating Partnership would have delivered to Digital Realty Trust, Inc. one common unit for each share of common stock issued upon exchange of the 2026 Debentures. The 2026 Debentures also would have been exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events, including if the weighted average common stock price exceeded a specified strike price as of the end of a fiscal quarter. Using the treasury method, 494,292 common units contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common units in determining diluted earnings per unit for the nine months ended September 30, 2011.

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2011	2010
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Units	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Units	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Units	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable Preferred Units	2,632,647	-	1,243,998	-
	17,517,989	14,756,101	17,158,157	16,182,020

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2012
Income Taxes	9. Income Taxes Digital Realty Trust, Inc. (the Parent Company) has elected to be taxed as a REIT and believes that it has complied with the REIT requirements of the Code. As a REIT, the Parent Company is generally not subject to corporate level federal income taxes on taxable income to the extent it is currently distributed to its stockholders. Since inception, the Parent Company has distributed 100% of its taxable income and intends to do so for the tax year ending December 31, 2012. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2012 and 2011. We have elected taxable REIT subsidiary (TRS) status for some of our consolidated subsidiaries. In general, a TRS may provide services that would otherwise be considered impermissible for REITs and hold assets that REITs cannot hold directly. A TRS is subject to federal income tax as a regular C corporation. Income taxes for TRS entities were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011. For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in income. Deferred tax assets (net of valuation allowance) and liabilities for our TRS entities and foreign subsidiaries were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.
Digital Realty Trust, L.P. [Member]
Income Taxes	9. Income Taxes Digital Realty Trust, Inc. (the Parent Company) has elected to be taxed as a REIT and believes that it has complied with the REIT requirements of the Code. As a REIT, the Parent Company is generally not subject to corporate level federal income taxes on taxable income to the extent it is currently distributed to its stockholders. Since inception, the Parent Company has distributed 100% of its taxable income and intends to do so for the tax year ending December 31, 2012. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2012 and 2011. We have elected taxable REIT subsidiary (TRS) status for some of our consolidated subsidiaries. In general, a TRS may provide services that would otherwise be considered impermissible for REITs and hold assets that REITs cannot hold directly. A TRS is subject to federal income tax as a regular C corporation. Income taxes for TRS entities were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011. For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in income. Deferred tax assets (net of valuation allowance) and liabilities for our TRS entities and foreign subsidiaries were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Equity And Accumulated Other Comprehensive Loss, Net [Abstract]

Equity And Accumulated Other Comprehensive Loss, Net

9 Months Ended

Sep. 30, 2012

Equity And Accumulated Other Comprehensive Loss, Net

10. Equity and Accumulated Other Comprehensive Loss, Net

(a) Common Stock

On July 2, 2012, Digital Realty Trust, Inc. completed an offering of 11.5 million shares of its common stock for total net proceeds, after deducting underwriting discounts and commissions and estimated offering expenses, of approximately $797.2 million. Digital Realty Trust, Inc. contributed the net proceeds from this offering to the Operating Partnership in exchange for 11.5 million common units, as required by the Operating Partnership’s partnership agreement, and the Operating Partnership used the net proceeds to fund a portion of the purchase price for the acquisition of the Sentrum Portfolio and to temporarily repay borrowings under our global revolving credit facility.

(b) Equity Distribution Agreements

On December 31, 2009, Digital Realty Trust, Inc. entered into equity distribution agreements, as amended, which we refer to as the 2009 Equity Distribution Agreements under which it could issue and sell shares of its common stock having an aggregate offering price of up to $400.0 million. The sales of common stock made under the 2009 Equity Distribution Agreements were made in “at the market” offerings as defined in Rule 415 of the Securities Act. In June 2011, we completed this equity distribution program. For the nine months ended September 30, 2011, Digital Realty Trust, Inc. generated aggregate net proceeds of approximately $176.9 million from the issuance of approximately 3.0 million common shares under the 2009 Equity Distribution Agreements at an average price of $60.51 per share after payment of approximately $2.7 million of commissions to the sales agents and before offering expenses. Pursuant to the program, we sold 6.8 million shares of common stock for gross proceeds of $400.0 million, resulting in net proceeds of approximately $394.0 million after deducting commissions.

On June 29, 2011, Digital Realty Trust, Inc. entered into new equity distribution agreements, which we refer to as the 2011 Equity Distribution Agreements, with each of Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Credit Suisse Securities (USA) LLC, Deutsche Bank Securities Inc. and Morgan Stanley & Co. LLC, or the Agents, under which it could issue and sell shares of its common stock having an aggregate offering price of up to $400.0 million from time to time through, at its discretion, any of the Agents as its sales agents. The sales of common stock made under the 2011 Equity Distribution Agreements will be made in “at the market” offerings as defined in Rule 415 of the Securities Act. For the nine months ended September 30, 2012, Digital Realty Trust, Inc. generated net proceeds of approximately $62.7 million from the issuance of approximately 1.0 million common shares under the 2011 Equity Distribution Agreements at an average price of $66.19 per share after payment of approximately $0.6 million of commissions to the sales agents and before offering expenses. No sales were made under the 2011 Equity Distribution Agreements during the three months ended September 30, 2012.

On April 5, 2012 and April 18, 2012, Digital Realty Trust, Inc. issued an aggregate of 7,300,000 shares of its 6.625% series F cumulative redeemable preferred stock, or the series F preferred stock, for net proceeds of $176.2 million, after deducting underwriting discounts and commissions and offering expenses. Dividends are cumulative on the series F preferred stock from the date of original issuance in the amount of $1.65625 per share each year, which is equivalent to 6.625% of the $25.00 liquidation preference per share. Dividends on the series F preferred stock are payable quarterly in arrears. The first dividend paid on the series F preferred stock on June 29, 2012 was a pro rata dividend from and including the original issue date to and including June 30, 2012 in the amount of $0.395660 per share. The series F preferred stock does not have a stated maturity date and is not subject to any sinking fund or mandatory redemption provisions. Upon liquidation, dissolution or winding up, the series F preferred stock will rank senior to Digital Realty Trust, Inc. common stock with respect to the payment of distributions and other amounts and rank on parity with Digital Realty Trust, Inc.’s series D cumulative convertible preferred stock and series E cumulative redeemable preferred stock. Digital Realty Trust, Inc. is not allowed to redeem the series F preferred stock before April 5, 2017, except in limited circumstances to preserve its status as a REIT. On or after April 5, 2017, Digital Realty Trust, Inc. may, at its option, redeem the series F preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series F preferred stock up to but excluding the redemption date. Holders of the series F preferred stock generally have no voting rights except for limited voting rights if Digital Realty Trust, Inc. fails to pay dividends for six or more quarterly periods (whether or not consecutive) and in certain other circumstances. Upon the occurrence of specified changes of control, as a result of which neither Digital Realty Trust, Inc.’s common stock nor the common securities of the acquiring or surviving entity (or American Depositary Receipts representing such securities) is listed on the New York Stock Exchange, or NYSE, the NYSE Amex Equities or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series F preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series F preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the series F preferred stock) to convert some or all of the series F preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series F preferred stock to be converted equal to the lesser of:


	•		the quotient obtained by dividing (i) the sum of the $25.00 liquidation preference plus the amount of any accrued and unpaid dividends to, but not including, the change of control conversion date (unless the change of control conversion date is after a record date for a series F preferred stock dividend payment and prior to the corresponding series F preferred stock dividend payment date, in which case no additional amount for such accrued and unpaid dividend will be included in this sum) by (ii) the common stock price specified in the Articles Supplementary governing the series F preferred stock; and


	•		0.6843, or the share cap, subject to certain adjustments;

subject, in each case, to provisions for the receipt of alternative consideration as described in the Articles Supplementary governing the series F preferred stock. Except in connection with specified change of control transactions, the series F preferred stock is not convertible into or exchangeable for any other property or securities of Digital Realty Trust, Inc.

(d) Noncontrolling Interests in Operating Partnership

Noncontrolling interests in the Operating Partnership relate to the interests that are not owned by Digital Realty Trust, Inc. The following table shows the ownership interest in the Operating Partnership as of September 30, 2012 and December 31, 2011:



	September 30, 2012			December 31, 2011
	Number of units	Percentage of total		Number of units	Percentage of total
Digital Realty Trust, Inc.	123,261,390	96.4	%	106,039,279	95.6	%
Noncontrolling interests consist of:
Common units held by third parties	3,131,814	2.4		3,405,814	3.0
Incentive units held by employees and directors (see note 12)	1,494,254	1.2		1,530,316	1.4
	127,887,458	100.0	%	110,975,409	100.0	%

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of Digital Realty Trust, Inc. common stock at the time of redemption. Alternatively, Digital Realty Trust, Inc. may elect to acquire those common units in exchange for shares of Digital Realty Trust, Inc. common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, Digital Realty Trust, Inc. evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the noncontrolling Operating Partnership common and incentive units. Based on the results of this analysis, we concluded that the common and incentive Operating Partnership units met the criteria to be classified within equity.

The redemption value of the noncontrolling Operating Partnership common units and the vested incentive units was approximately $290.1 million and $291.5 million based on the closing market price of Digital Realty Trust, Inc. common stock on September 30, 2012 and December 31, 2011, respectively.

The following table shows activity for the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2012:



	Common Units	Incentive Units	Total
As of December 31, 2011	3,405,814	1,530,316	4,936,130
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (1)	(274,000)	-	(274,000)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1)	-	(186,192)	(186,192)
Cancellation of incentive units held by employees and directors	-	(15,950)	(15,950)
Grant of incentive units to employees and directors	-	166,080	166,080
As of September 30, 2012	3,131,814	1,494,254	4,626,068


(1)	This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

Under the terms of certain third parties’ (the eXchange parties) contribution agreements signed in the third quarter of 2004, we have agreed to indemnify each eXchange party against adverse tax consequences in the event the Operating Partnership directly or indirectly sells, exchanges or otherwise disposes of (whether by way of merger, sale of assets or otherwise) in a taxable transaction any interest in 200 Paul Avenue 1-4 or 1100 Space Park Drive until the earlier of November 3, 2013 and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO. Under the eXchange parties’ amended contribution agreement, the Operating Partnership has agreed to make approximately $17.8 million of indebtedness available for guaranty by the eXchange parties until the earlier of November 3, 2013 and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO, and we have agreed to indemnify each eXchange party against adverse tax consequences if the Operating Partnership does not provide such indebtedness to guarantee.

(e) Dividends

We have declared and paid the following dividends on our common and preferred stock for the nine months ended September 30, 2012 (in thousands):



Date dividend declared	Dividend payable date	Series C Preferred Stock (1)(6)	Series D Preferred Stock (2)	Series E Preferred Stock (3)	Series F Preferred Stock (4)		Common Stock (5)

February 14, 2012	Mar. 30, 2012	$ 1,402	$ 2,398	$ 5,031	$ -		$ 78,335
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	⁽⁷⁾	80,478
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		89,679

		$ 1,402	$ 6,515	$ 15,093	$ 5,911		$ 248,492


(1)	$1.094 annual rate of dividend per share.


(2)	$1.375 annual rate of dividend per share.


(3)	$1.750 annual rate of dividend per share.


(4)	$1.656 annual rate of dividend per share.


(5)	$2.920 annual rate of dividend per share.


(6)	Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.


(7)	Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Distributions out of Digital Realty Trust, Inc.’s current or accumulated earnings and profits are generally classified as dividends whereas distributions in excess of its current and accumulated earnings and profits, to the extent of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock, are generally classified as a return of capital. Distributions in excess of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock are generally characterized as capital gain. Cash provided by operating activities has generally been sufficient to fund all distributions, however, we may also need to utilize borrowings under the global revolving credit facility to fund all distributions.

(f) Accumulated Other Comprehensive Loss, Net

The accumulated balances for each classification of other comprehensive loss, net as of September 30, 2012 are as follows (in thousands):



	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss, net
Balance as of December 31, 2011	$ (49,298)	$ (6,582)	$ (55,880)
Net current period change	35,053	(6,553)	28,500
Reclassification to interest expense from interest rate swaps	-	2,856	2,856
Balance as of September 30, 2012	$ (14,245)	$ (10,279)	$ (24,524)

(g) Noncontrolling Interests in Consolidated Joint Ventures

On May 4, 2012, we acquired all of the noncontrolling ownership interest in the entity that owns 2805 Lafayette Street from our joint venture partner for approximately $12.4 million (subject to adjustment in limited circumstances). Concurrent with the acquisition, we repaid the secured debt on the property. The acquisition and debt repayment were financed with borrowings under our global revolving credit facility. The amount paid in excess of the carrying value of the noncontrolling ownership interest resulted in a decrease to additional paid-in capital, as presented in the accompanying condensed consolidated statement of equity.

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Article 3

Capital And Comprehensive Income

9 Months Ended

Sep. 30, 2012

Capital And Comprehensive Income

11. Capital and Comprehensive Income

(a) Redeemable Preferred Units

On April 5, 2012 and April 18, 2012, the Operating Partnership issued a total of 7,300,000 units of its 6.625% series F cumulative redeemable preferred units, or series F preferred units, to Digital Realty Trust, Inc. (the General Partner) in conjunction with the General Partner’s issuance of an equivalent number of shares of its 6.625% series F cumulative redeemable preferred stock, or the series F preferred stock. Distributions are cumulative on the series F preferred units from the date of original issuance in the amount of $1.65625 per unit each year, which is equivalent to 6.625% of the $25.00 liquidation preference per unit. Distributions on the series F preferred units are payable quarterly in arrears. The first distribution paid on the series F preferred units on June 29, 2012 was a pro rata distribution from and including the original issue date to and including June 30, 2012 in the amount of $0.39566 per unit. The series F preferred units do not have a stated maturity date and are not subject to any sinking fund. The Operating Partnership is required to redeem the series F preferred units in the event that the General Partner redeems the series F preferred stock. The General Partner is not allowed to redeem the series F preferred stock prior to April 5, 2017 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after April 5, 2017, the General Partner may, at its option, redeem the series F preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series F preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series F preferred units will rank senior to the common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series D cumulative convertible preferred units and series E cumulative redeemable preferred units. Except in connection with specified change of control transactions of the General Partner, the series F preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership.

(b) Allocations of Net Income and Net Losses to Partners

Except for special allocations to holders of profits interest units described below in note 12(a) under the heading “Incentive Plan-Long-Term Incentive Units,” the Operating Partnership’s net income will generally be allocated to the General Partner to the extent of the accrued preferred return on its preferred units, and then to the General Partner and the Operating Partnership’s limited partners in accordance with the respective percentage interests in the common units issued by the Operating Partnership. Net loss will generally be allocated to the General Partner and the Operating Partnership’s limited partners in accordance with the respective common percentage interests in the Operating Partnership until the limited partner’s capital is reduced to zero and any remaining net loss would be allocated to the General Partner. However, in some cases, losses may be disproportionately allocated to partners who have guaranteed our debt. The allocations described above are subject to special allocations relating to depreciation deductions and to compliance with the provisions of Sections 704(b) and 704(c) of the Code, and the associated Treasury Regulations.

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of the General Partner’s common stock at the time of redemption. Alternatively, the General Partner may elect to acquire those common units in exchange for shares of the General Partner’s common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, the Operating Partnership evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the limited partners’ common units and the vested incentive units. Based on the results of this analysis, the Operating Partnership concluded that the common and vested incentive Operating Partnership units met the criteria to be classified within capital.

The redemption value of the limited partners’ common units and the vested incentive units was approximately $290.1 million and $291.5 million based on the closing market price of Digital Realty Trust, Inc.’s common stock on September 30, 2012 and December 31, 2011, respectively.

(d) Distributions

All distributions on our units are at the discretion of Digital Realty Trust, Inc.’s board of directors. As of September 30, 2012, the Operating Partnership declared and paid the following distributions (in thousands):



Date distribution declared	Distribution payable date	Series C Preferred Units (1)(6)	Series D Preferred Units (2)	Series E Preferred Units (3)	Series F Preferred Units (4)		Common Units (5)

February 14, 2012	Mar. 30, 2012	$ 1,402	$ 2,398	$ 5,031	$ -		$ 81,917
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	⁽⁷⁾	83,982
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		93,076

		$ 1,402	$ 6,515	$ 15,093	$ 5,911		$ 258,975


(1)	$1.094 annual rate of distribution per unit.


(2)	$1.375 annual rate of distribution per unit.


(3)	$1.750 annual rate of distribution per unit.


(4)	$1.656 annual rate of distribution per unit.


(5)	$2.920 annual rate of distribution per unit.

(6)

Effective April 17, 2012, in connection with the conversion of the series C preferred stock by Digital Realty Trust, Inc., all of the outstanding 4.375% series C cumulative convertible preferred units, or the series C preferred units, were converted into common units in accordance with the terms of the series C preferred units. Each series C preferred unit was converted into 0.5480 common unit of the Operating Partnership.


(7)	Represents a pro rata distribution from and including the original issue date to and including June 30, 2012.

(e) Accumulated Other Comprehensive Loss

The accumulated balances for each classification of other comprehensive loss as of September 30, 2012 are as follows (in thousands):



	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss
Balance as of December 31, 2011	$ (52,704)	$ (7,363)	$ (60,067)
Net current period change	36,286	(6,796)	29,490
Reclassification to interest expense from interest rate swaps	-	2,964	2,964
Balance as of September 30, 2012	$ (16,418)	$ (11,195)	$ (27,613)

(f) Noncontrolling Interests in Consolidated Joint Ventures

On May 4, 2012, we acquired all of the noncontrolling ownership interest in the entity that owns 2805 Lafayette Street from our joint venture partner for approximately $12.4 million (subject to adjustment in limited circumstances). Concurrent with the acquisition, we repaid the secured debt on the property. The acquisition and debt repayment were financed with borrowings under our global revolving credit facility. The amount paid in excess of the carrying value of the noncontrolling ownership interest resulted in a decrease to general partner common capital as presented in the accompanying condensed consolidated statement of capital.

The entire disclosure for the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units.

Incentive Plan

9 Months Ended

Sep. 30, 2012

Incentive Plan

12. Incentive Plan

Our Amended and Restated 2004 Incentive Award Plan (as defined below) provides for the grant of incentive awards to employees, directors and consultants. Awards issuable under the Amended and Restated 2004 Incentive Award Plan include stock options, restricted stock, dividend equivalents, stock appreciation rights, long-term incentive units, cash performance bonuses and other incentive awards. Only employees are eligible to receive incentive stock options under the Amended and Restated 2004 Incentive Award Plan. Initially, we had reserved a total of 4,474,102 shares of common stock for issuance pursuant to the 2004 Incentive Award Plan, subject to certain adjustments set forth in the 2004 Incentive Award Plan. On May 2, 2007, Digital Realty Trust, Inc.’s stockholders approved the First Amended and Restated Digital Realty Trust, Inc., Digital Services, Inc. and Digital Realty Trust, L.P. 2004 Incentive Award Plan (as amended, the Amended and Restated 2004 Incentive Award Plan). The Amended and Restated 2004 Incentive Award Plan increases the aggregate number of shares of stock which may be issued or transferred under the plan by 5,000,000 shares to a total of 9,474,102 shares, and provides that the maximum number of shares of stock with respect to awards granted to any one participant during a calendar year will be 1,500,000 and the maximum amount that may be paid in cash during any calendar year with respect to any performance-based award not denominated in stock or otherwise for which the foregoing limitation would not be an effective limitation for purposes of Section 162(m) of the Code will be $10.0 million.

As of September 30, 2012, 3,495,677 shares of common stock or awards convertible into or exchangeable for common stock remained available for future issuance under the Amended and Restated 2004 Incentive Award Plan. Each long-term incentive unit and Class C Unit issued under the Amended and Restated 2004 Incentive Award Plan will count as one share of common stock for purposes of calculating the limit on shares that may be issued under the Amended and Restated 2004 Incentive Award Plan and the individual award limit discussed above.

(a) Long-Term Incentive Units

Long-term incentive units, which are also referred to as profits interest units, may be issued to eligible participants for the performance of services to or for the benefit of the Operating Partnership. Long-term incentive units, whether vested or not, will receive the same quarterly per unit distributions as Operating Partnership common units, which equal per share distributions on Digital Realty Trust, Inc. common stock. Initially, long-term incentive units do not have full parity with common units with respect to liquidating distributions. If such parity is reached, vested long-term incentive units may be converted into an equal number of common units of the Operating Partnership at any time, and thereafter enjoy all the rights of common units of the Operating Partnership, including redemption rights.

In order to achieve full parity with common units, long-term incentive units must be fully vested and the holder’s capital account balance in respect of such long-term incentive units must be equal to the capital account balance of a holder of an equivalent number of common units. The capital account balance attributable to each common unit is generally expected to be the same, in part because of the amount credited to a partner’s capital account upon the partner’s contribution of property to the Operating Partnership, and in part because the partnership agreement provides, in most cases, that allocations of income, gain, loss and deduction (which will adjust the partner’s capital accounts) are to be made to the common units on a proportionate basis. As a result, with respect to a number of long-term incentive units, it is possible to determine the capital account balance of an equivalent number of common units by multiplying the number of long-term incentive units by the capital account balance with respect to a common unit.

A partner’s initial capital account balance is equal to the amount the partner paid (or contributed to the Operating Partnership) for the partner’s units and is subject to subsequent adjustments, including with respect to the partner’s share of income, gain or loss of the Operating Partnership. Because a holder of long-term incentive units generally will not pay for the long-term incentive units, the initial capital account balance attributable to such long-term incentive units will be zero. However, the Operating Partnership is required to allocate income, gain, loss and deduction to the partner’s capital accounts in accordance with the terms of the partnership agreement, subject to applicable Treasury Regulations. The partnership agreement provides that holders of long-term incentive units will receive special allocations of gain in the event of a sale or “hypothetical sale” of assets of the Operating Partnership prior to the allocation of gain to Digital Realty Trust, Inc. or other limited partners with respect to their common units. The amount of such allocation will, to the extent of any such gain, be equal to the difference between the capital account balance of a holder of long-term incentive units attributable to such units and the capital account balance attributable to an equivalent number of common units. If and when such gain allocation is fully made, a holder of long-term incentive units will have achieved full parity with holders of common units. To the extent that, upon an actual sale or a “hypothetical sale” of the Operating Partnership’s assets as described above, there is not sufficient gain to allocate to a holder’s capital account with respect to long-term incentive units, or if such sale or “hypothetical sale” does not occur, such units will not achieve parity with common units.

The term “hypothetical sale” refers to circumstances that are not actual sales of the Operating Partnership’s assets but that require certain adjustments to the value of the Operating Partnership’s assets and the partners’ capital account balances. Specifically, the partnership agreement provides that, from time to time, in accordance with applicable Treasury Regulations, the Operating Partnership will adjust the value of its assets to equal their respective fair market values, and adjust the partners’ capital accounts, in accordance with the terms of the partnership agreement, as if the Operating Partnership sold its assets for an amount equal to their value. Times for making such adjustments generally include the liquidation of the Operating Partnership, the acquisition of an additional interest in the Operating Partnership by a new or existing partner in exchange for more than a de minimis capital contribution, the distribution by the Operating Partnership to a partner of more than a de minimis amount of partnership property as consideration for an interest in the Operating Partnership, in connection with the grant of an interest in the Operating Partnership (other than a de minimis interest) as consideration for the performance of services to or for the benefit of the Operating Partnership (including the grant of a long-term incentive unit), and at such other times as may be desirable or required to comply with the Treasury Regulations.

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 79,237 and 85,910 long-term incentive units, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 86,843 and 98,632 long-term incentive units, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of units which ultimately vests. The performance condition is based upon our achievement of the respective fiscal years’ Funds From Operations, or FFO, per share targets. Upon evaluating the results of the performance condition, the final number of units is determined and such units vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date, provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 long-term incentive units satisfied the performance condition. The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the long-term incentive units, which ranges from three to five years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.

The expense recorded for the three months ended September 30, 2012 and 2011 related to long-term incentive units was approximately $2.1 million and $2.2 million, respectively, and approximately $7.2 million and $6.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.4 million and $0.2 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.8 million and $0.6 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $15.4 million and $12.7 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.7 years on a weighted average basis.

(b) Class C Profits Interest Units

On May 2, 2007, we granted awards of Class C Profits Interest Units of the Operating Partnership or similar stock-based performance awards, which we refer to collectively as the Class C Units, under the Amended and Restated 2004 Incentive Award Plan (2007 Grant) to each of our named executive officers and certain other officers and employees.

The Class C Units subject to this award were subject to vesting based on the achievement of a total stockholder return (which we refer to as the market condition) as measured on November 1, 2008 (which we refer to as the first measurement date) and May 1, 2010 (which we refer to as the second measurement date).

We previously determined that the market condition with respect to the first measurement date was not achieved. On May 1, 2010, we determined that 593,316 of the Class C Units and 20,169 shares of restricted stock subject to the 2007 Grant satisfied the market condition on the second measurement date (May 1, 2010), with the value of these units equal to the maximum amount of the award pool payable pursuant to the 2007 Grant on the second measurement date. Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.

The fair value of the 2007 Grant was measured on the grant date using a Monte Carlo simulation to estimate the probability of the multiple market conditions being satisfied. The Monte Carlo simulation uses a statistical formula underlying the Black-Scholes and binomial formulas, and such simulation was run approximately 100,000 times. For each simulation, the value of the payoff was calculated at the settlement date and was then discounted to the grant date at a risk-free interest rate. The expected value of the Class C Units on the grant date was determined by multiplying the average of the values over all simulations by the number of outstanding shares of Digital Realty Trust, Inc. common stock and Operating Partnership units. The valuation was performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium. Other significant assumptions used in the valuation included an expected term of 36 months, expected stock price volatility of 23%, a risk-free interest rate of 4.6%, and a dividend growth rate of 5.0%. The fixed award limit under the plan was $17 million for the first market condition and $40 million for the second market condition, and there were 69.2 million shares of Digital Realty Trust, Inc. common stock and Operating Partnership units outstanding as of the 2007 grant date. The grant date fair value of these awards of approximately $11.8 million will be recognized as compensation expense on a straight-line basis over the expected service period of five years, which ended during the three months ended June 30, 2012. The unearned compensation as of September 30, 2012 and December 31, 2011 was $0 and $0.6 million, respectively. As of June 30, 2012, all of the Class C Units subject to the 2007 Grant had vested. We recognized compensation expense related to the Class C Units subject to the 2007 Grant of $0 and $0.7 million for the three months ended September 30, 2012 and 2011, respectively, and $0.5 million and $1.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively.

The fair value of each option granted under the Amended and Restated 2004 Incentive Award Plan is estimated on the date of the grant using the Black-Scholes option-pricing model. For the nine months ended September 30, 2012 and 2011, no stock options were granted. The fair values are being expensed on a straight-line basis over the vesting period of the options, which ranges from four to five years. The expense recorded for the three months ended September 30, 2012 and 2011 was approximately $0 and $0.2 million, respectively, and approximately $0.2 million and $0.7 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the stock options totaled $0 and $0.3 million as of September 30, 2012 and December 31, 2011, respectively. All unearned compensation has been recognized as of September 30, 2012.

The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the nine months ended September 30, 2012:



	Period ended September 30, 2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73

Options outstanding, end of period		129,909		$	30.62

Exercisable, end of period		129,909		$	30.62

The following table summarizes information about stock options outstanding and exercisable as of September 30, 2012:



Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392

		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

(d) Restricted Stock

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 45,184 and 41,220 shares of restricted stock, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 52,947 and 50,999 shares of restricted stock, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of shares which ultimately vests. The performance condition is based upon our achievement of the respective year’s FFO per share targets. Upon evaluating the results of the performance condition, the final number of shares is determined and such shares vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 restricted stock satisfied the performance condition.

The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the restricted stock, which ranges from three to four years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.

The expense recorded for the three months ended September 30, 2012 and 2011 related to grants of restricted stock was approximately $0.6 million and $0.5 million, respectively, and approximately $2.1 million and $1.5 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.6 million and $0.4 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $1.5 million and $1.1 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $8.8 million and $5.5 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.9 years on a weighted average basis.

Incentive Plan

12. Incentive Plan

(a) Long-Term Incentive Units

(b) Class C Profits Interest Units

The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the nine months ended September 30, 2012:



	Period ended September 30, 2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73

Options outstanding, end of period		129,909		$	30.62

Exercisable, end of period		129,909		$	30.62

The following table summarizes information about stock options outstanding and exercisable as of September 30, 2012:



Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392

		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

(d) Restricted Stock

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

Derivative Instruments

9 Months Ended

Sep. 30, 2012

Derivative Instruments

13. Derivative Instruments

Currently, we use interest rate swaps to manage our interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.

To comply with the provisions of fair value accounting guidance, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of December 31, 2011, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. We do not have any fair value measurements on a recurring basis using significant unobservable inputs (Level 3) as of September 30, 2012 or December 31, 2011.

Cash Flow Hedges of Interest Rate Risk

Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements related to US LIBOR, GBP LIBOR and EURIBOR based mortgage loans as well as the U.S. LIBOR and SGD-SOR based tranches of the unsecured term loan. To accomplish this objective, we primarily use interest rate swaps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Under an interest rate cap, if the reference interest rate, such as one-month LIBOR, increases above the cap rate, the holder of the instrument receives a payment based on the notional value of the instrument, the length of the period, and the difference between the current reference rate and the cap rate. If the reference rate increases above the cap rate, the payment received under the interest rate cap will offset the increase in the payments due under the variable rate notes payable.

We record all our interest rate swaps on the condensed consolidated balance sheet at fair value. In determining the fair value of our interest rate swaps, we consider the credit risk of our counterparties. These counterparties are generally larger financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions, including, but not limited to, fluctuations in interest rates, exchange rates, equity and commodity prices and credit spreads. The current and pervasive disruptions in the financial markets have heightened the risks to these institutions.

Interest rate caps are viewed as a series of call options or caplets which exist for each period the cap agreement is in existence. As each caplet expires, the related cost of the expired caplet is amortized to interest expense with the remaining caplets carried at fair value. The value of interest rate caps is primarily impacted by interest rates, market expectations about interest rates, and the remaining life of the instrument. In general, increases in interest rates, or anticipated increases in interest rates, will increase the value of interest rate caps. As the remaining life of an interest rate cap decreases, the value of the instrument will generally decrease towards zero. The purchase price of an interest rate cap is amortized to interest expense over the contractual life of the instrument. For interest rate caps that are designated as cash flow hedges under accounting guidance as it relates to derivative instruments, the change in the fair value of an effective interest rate cap is recorded to accumulated other comprehensive income in equity. Amounts we are entitled to under interest rate caps, if any, are recognized on an accrual basis, and are recorded as a reduction against interest expense in the accompanying condensed consolidated statements of operations.

Our agreements with some of our derivative counterparties provide that (1) we could be declared in default on our derivative obligations if repayment of any of our indebtedness over $75.0 million is accelerated by the lender due to our default on the indebtedness and (2) we could be declared in default on a certain derivative obligation if we default on any of our indebtedness, including a default where repayment of underlying indebtedness has not been accelerated by the lender.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During 2012, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The fair value of these derivatives was ($9.4) million and ($5.5) million at September 30, 2012 and December 31, 2011, respectively. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2012 and 2011, respectively, there were no ineffective portions to our interest rate swaps.

Amounts reported in accumulated other comprehensive loss related to interest rate swaps will be reclassified to interest expense as interest payments are made on our debt. As of September 30, 2012, we estimate that an additional $6.3 million will be reclassified as an increase to interest expense during the twelve months ending September 30, 2013, when the hedged forecasted transactions impact earnings.

As of September 30, 2012 and December 31, 2011, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):



Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$ 69,235	(1)	$ 66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$ (1,970)	$ (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$ 703,920		$ 246,973							$ (9,358)	$ (5,484)


(1)	Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.


(2)	Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.


(3)	The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.


(4)	This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.


(5)	This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.


(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

Derivative Instruments

13. Derivative Instruments

Cash Flow Hedges of Interest Rate Risk

As of September 30, 2012 and December 31, 2011, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):



Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$ 69,235	(1)	$ 66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$ (1,970)	$ (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$ 703,920		$ 246,973							$ (9,358)	$ (5,484)


(1)	Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.


(2)	Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.


(3)	The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.


(4)	This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.


(5)	This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.


(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80784-113994

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959

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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
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Fair Value Of Instruments

Fair Value Of Instruments

9 Months Ended

Sep. 30, 2012

14. Fair Value of Instruments

We disclose fair value information about all financial instruments, whether or not recognized in the condensed consolidated balance sheets, for which it is practicable to estimate fair value.

Current accounting guidance requires the Company to disclose fair value information about all financial instruments, whether or not recognized in the balance sheets, for which it is practicable to estimate fair value. The Company’s disclosures of estimated fair value of financial instruments at September 30, 2012 and December 31, 2011 were determined using available market information and appropriate valuation methods. Considerable judgment is necessary to interpret market data and develop estimated fair value. The use of different market assumptions or estimation methods may have a material effect on the estimated fair value amounts.

The carrying amounts for cash and cash equivalents, restricted cash, accounts and other receivables, accounts payable and other accrued liabilities, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 13, the interest rate cap and interest rate swaps are recorded at fair value.

We calculate the fair value of our mortgage loans, unsecured senior notes and exchangeable senior debentures based on currently available market rates assuming the loans are outstanding through maturity and considering the collateral and other loan terms. In determining the current market rate for fixed rate debt, a market spread is added to the quoted yields on federal government treasury securities with similar maturity dates to debt. The carrying value of our global revolving credit facility approximates fair value, due to the short-term nature of this instrument along with the variability of interest rates.

As of September 30, 2012 and December 31, 2011, the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured senior notes, exchangeable senior debentures, mortgage loans and other secured loan were as follows (in thousands):



	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$ 526,372	$ 526,372	$ 275,106	$ 275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$ 4,515,864	$ 4,080,073	$ 3,234,007	$ 2,940,210


(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.


(3)	Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.


(4)	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

Fair Value Of Instruments

14. Fair Value of Instruments

We disclose fair value information about all financial instruments, whether or not recognized in the condensed consolidated balance sheets, for which it is practicable to estimate fair value.



	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$ 526,372	$ 526,372	$ 275,106	$ 275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$ 4,515,864	$ 4,080,073	$ 3,234,007	$ 2,940,210


(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.


(3)	Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.


(4)	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2012
Related Party Transactions	15. Related Party Transactions In December 2006, we entered into ten leases with The tel(x) Group, Inc., or tel(x), pursuant to which tel(x) provides enhanced meet-me-room services to our customers. The initial terms of these leases expire in 2026, and tel(x) has options to extend them through 2046. tel(x) was acquired by GI Partners Fund II, LLP in November 2006, which, collectively with GI Partners Side Fund II, L.P., owned the majority of the outstanding stock of tel(x). Richard Magnuson, our director and Chairman until our 2012 Annual Meeting of Stockholders, or the Annual Meeting, is the chief executive officer of the advisor to GI Partners Fund II, LLP and GI Partners Side Fund II, L.P. During the year ended December 31, 2011, GI Partners Fund II, LLP and GI Partners Side Fund II, L.P completed the sale of tel(x) to an unrelated third party. Our condensed consolidated statements of operations include rental revenues of approximately $12.0 million and $11.4 million from tel(x) for the three months ended September 30, 2012 and 2011, respectively, and approximately $33.7 million and $30.9 million for the nine months ended September 30, 2012 and 2011, respectively, from leases entered into before tel(x) was sold to an unrelated third party. In connection with the lease agreements, we entered into an operating agreement with tel(x), effective as of December 1, 2006, with respect to joint sales and marketing efforts, designation of representatives to manage the national relationship between us and tel(x) and future meet-me-room facilities. As of September 30, 2012 and December 31, 2011, tel(x) leased from us 259,294 square feet under 43 lease agreements and 254,314 square feet under 41 lease agreements, respectively; all but two leases for 4,980 square feet, were entered into prior to the sale of tel(x) to an unrelated third party in September 2011. We also entered into an agreement with tel(x), effective as of December 1, 2006, with respect to percentage rent arising out of potential future lease agreements for rentable space in buildings covered by the meet-me-room lease agreements. Percentage rent earned during the three months ended September 30, 2012 and 2011 amounted to approximately $1.7 million and $1.4 million, respectively, and $3.1 million and $2.1 million during the nine months ended September 30, 2012 and 2011, respectively. In addition, in connection with the lease agreements, we entered into a management agreement with tel(x), effective as of December 1, 2007, pursuant to which tel(x) agreed to provide us with certain management services in exchange for a management fee of one percent of rents actually collected by tel(x). We are party to nine leases with SoftLayer, all of which are in place as of September 30, 2012. The initial terms of these leases expire from 2013 to 2025, and SoftLayer has options to extend them from 2018 through 2035. On August 3, 2010, GI Partners Fund III, L.P. acquired a controlling interest in SoftLayer. Richard Magnuson, our director and Chairman until our Annual Meeting, is also a manager of the general partner to GI Partners Fund III, L.P. Our condensed consolidated statements of operations include rental revenues of approximately $19.4 million and $4.7 million from SoftLayer for the three months ended September 30, 2012 and 2011, respectively, and approximately $41.2 million and $11.6 million for the nine months ended September 30, 2012 and 2011, respectively. Mr. Magnuson did not stand for re-election to our Board of Directors at our Annual Meeting. His term as a member of our Board of Directors and our Chairman ended effective April 23, 2012, the date of the Annual Meeting.
Digital Realty Trust, L.P. [Member]
Related Party Transactions	15. Related Party Transactions In December 2006, we entered into ten leases with The tel(x) Group, Inc., or tel(x), pursuant to which tel(x) provides enhanced meet-me-room services to our customers. The initial terms of these leases expire in 2026, and tel(x) has options to extend them through 2046. tel(x) was acquired by GI Partners Fund II, LLP in November 2006, which, collectively with GI Partners Side Fund II, L.P., owned the majority of the outstanding stock of tel(x). Richard Magnuson, our director and Chairman until our 2012 Annual Meeting of Stockholders, or the Annual Meeting, is the chief executive officer of the advisor to GI Partners Fund II, LLP and GI Partners Side Fund II, L.P. During the year ended December 31, 2011, GI Partners Fund II, LLP and GI Partners Side Fund II, L.P completed the sale of tel(x) to an unrelated third party. Our condensed consolidated statements of operations include rental revenues of approximately $12.0 million and $11.4 million from tel(x) for the three months ended September 30, 2012 and 2011, respectively, and approximately $33.7 million and $30.9 million for the nine months ended September 30, 2012 and 2011, respectively, from leases entered into before tel(x) was sold to an unrelated third party. In connection with the lease agreements, we entered into an operating agreement with tel(x), effective as of December 1, 2006, with respect to joint sales and marketing efforts, designation of representatives to manage the national relationship between us and tel(x) and future meet-me-room facilities. As of September 30, 2012 and December 31, 2011, tel(x) leased from us 259,294 square feet under 43 lease agreements and 254,314 square feet under 41 lease agreements, respectively; all but two leases for 4,980 square feet, were entered into prior to the sale of tel(x) to an unrelated third party in September 2011. We also entered into an agreement with tel(x), effective as of December 1, 2006, with respect to percentage rent arising out of potential future lease agreements for rentable space in buildings covered by the meet-me-room lease agreements. Percentage rent earned during the three months ended September 30, 2012 and 2011 amounted to approximately $1.7 million and $1.4 million, respectively, and $3.1 million and $2.1 million during the nine months ended September 30, 2012 and 2011, respectively. In addition, in connection with the lease agreements, we entered into a management agreement with tel(x), effective as of December 1, 2007, pursuant to which tel(x) agreed to provide us with certain management services in exchange for a management fee of one percent of rents actually collected by tel(x). We are party to nine leases with SoftLayer, all of which are in place as of September 30, 2012. The initial terms of these leases expire from 2013 to 2025, and SoftLayer has options to extend them from 2018 through 2035. On August 3, 2010, GI Partners Fund III, L.P. acquired a controlling interest in SoftLayer. Richard Magnuson, our director and Chairman until our Annual Meeting, is also a manager of the general partner to GI Partners Fund III, L.P. Our condensed consolidated statements of operations include rental revenues of approximately $19.4 million and $4.7 million from SoftLayer for the three months ended September 30, 2012 and 2011, respectively, and approximately $41.2 million and $11.6 million for the nine months ended September 30, 2012 and 2011, respectively. Mr. Magnuson did not stand for re-election to our Board of Directors at our Annual Meeting. His term as a member of our Board of Directors and our Chairman ended effective April 23, 2012, the date of the Annual Meeting.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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Commitments And Contingencies	9 Months Ended
Commitments And Contingencies	Sep. 30, 2012
Commitments And Contingencies	16. Commitments and Contingencies We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment. This revenue sharing agreement terminated in May 2012. We made payments of approximately $0.7 million and $1.2 million to the seller during the nine months ended September 30, 2012 and 2011, respectively. As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment and therefore no amount is accrued as of September 30, 2012. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $40.7 million based on the exchange rate as of September 30, 2012). The earnout contingency expires in November 2020. One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities are not permitted on specifically identified expansion space within the property until April 2014. If the tenant elects to take this option, we can elect one of two options. The first option is to construct and develop an additional shell building on the expansion space. Concurrent with this obligation, the tenant would execute an amendment to the existing lease to reflect the expansion of the space and include the additional shell building. The second option is to sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease. As part of the acquisition of the noncontrolling interest in the entity that owns 2805 Lafayette Street from our joint venture partner, the partner could earn additional consideration if between May 4, 2012 and January 31, 2013, we enter into a qualifying lease for this property, as defined in the agreement. As of September 30, 2012, no leases were executed for this property that would cause an amount to become probable of payment and therefore, no amount is accrued as of September 30, 2012. As part of the acquisition of the Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be redeveloped, but not currently leased, as defined in the purchase agreement for the acquisition. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to the purchase date would cause an amount to become probable of payment. The expected fair value of the contingent consideration as of September 30, 2012 that could be earned by the seller is £56.5 million (or approximately $91.3 million based on the exchange rate as of September 30, 2012) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. The earn-out contingency expires in July 2015. This amount will be reassessed on a quarterly basis. Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements and from time to time in the normal course of our business, we enter into various construction contracts with third parties that may obligate us to make payments. At September 30, 2012, we had open commitments related to construction contracts of approximately $187.3 million.
Digital Realty Trust, L.P. [Member]
Commitments And Contingencies	16. Commitments and Contingencies We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment. This revenue sharing agreement terminated in May 2012. We made payments of approximately $0.7 million and $1.2 million to the seller during the nine months ended September 30, 2012 and 2011, respectively. As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment and therefore no amount is accrued as of September 30, 2012. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $40.7 million based on the exchange rate as of September 30, 2012). The earnout contingency expires in November 2020. One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities are not permitted on specifically identified expansion space within the property until April 2014. If the tenant elects to take this option, we can elect one of two options. The first option is to construct and develop an additional shell building on the expansion space. Concurrent with this obligation, the tenant would execute an amendment to the existing lease to reflect the expansion of the space and include the additional shell building. The second option is to sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease. As part of the acquisition of the noncontrolling interest in the entity that owns 2805 Lafayette Street from our joint venture partner, the partner could earn additional consideration if between May 4, 2012 and January 31, 2013, we enter into a qualifying lease for this property, as defined in the agreement. As of September 30, 2012, no leases were executed for this property that would cause an amount to become probable of payment and therefore, no amount is accrued as of September 30, 2012. As part of the acquisition of the Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be redeveloped, but not currently leased, as defined in the purchase agreement for the acquisition. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to the purchase date would cause an amount to become probable of payment. The expected fair value of the contingent consideration as of September 30, 2012 that could be earned by the seller is £56.5 million (or approximately $91.3 million based on the exchange rate as of September 30, 2012) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. The earn-out contingency expires in July 2015. This amount will be reassessed on a quarterly basis. Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements and from time to time in the normal course of our business, we enter into various construction contracts with third parties that may obligate us to make payments. At September 30, 2012, we had open commitments related to construction contracts of approximately $187.3 million.

The entire disclosure for commitments and contingencies.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Subsequent Events

9 Months Ended

Sep. 30, 2012

Subsequent Events

17. Subsequent Events

On October 30, 2012, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:



Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

Principles Of Consolidation And Basis Of Presentation

Subsequent Events

17. Subsequent Events

On October 30, 2012, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:



Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

Summary Of Significant Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2012

(a) Principles of Consolidation and Basis of Presentation

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:


	•		enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;


	•		eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and


	•		creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.


	•		condensed consolidated face financial statements; and


	•		the following notes to the condensed consolidated financial statements:


	•		Debt of the Company and Debt of the Operating Partnership;


	•		Income per Share and Income per Unit; and


	•		Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

Cash Equivalents

(b) Cash Equivalents

Share Based Compensation

Income Taxes

(d) Income Taxes

See Note 9 for further discussion on income taxes.

Presentation Of Transactional-Based Taxes

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

Asset Retirement Obligations

(f) Asset Retirement Obligations

Construction Management Revenue

(g) Construction Management Revenue

Assets And Liabilities Measured At Fair Value

(h) Assets and Liabilities Measured at Fair Value

Transactions Expense

(i) Transactions Expense

Capitalization Of Costs

(j) Capitalization of Costs

Management's Estimates

(k) Management’s Estimates

Segment Information

(l) Segment Information

Recent Accounting Pronouncements

(m) Recent Accounting Pronouncements

Principles Of Consolidation And Basis Of Presentation

(a) Principles of Consolidation and Basis of Presentation

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:


	•		enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;


	•		eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and


	•		creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.


	•		condensed consolidated face financial statements; and


	•		the following notes to the condensed consolidated financial statements:


	•		Debt of the Company and Debt of the Operating Partnership;


	•		Income per Share and Income per Unit; and


	•		Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

Cash Equivalents

(b) Cash Equivalents

Share Based Compensation

Income Taxes

(d) Income Taxes

See Note 9 for further discussion on income taxes.

Presentation Of Transactional-Based Taxes

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

Asset Retirement Obligations

(f) Asset Retirement Obligations

Construction Management Revenue

(g) Construction Management Revenue

Assets And Liabilities Measured At Fair Value

(h) Assets and Liabilities Measured at Fair Value

Transactions Expense

(i) Transactions Expense

Capitalization Of Costs

(j) Capitalization of Costs

Management's Estimates

(k) Management’s Estimates

Segment Information

(l) Segment Information

Recent Accounting Pronouncements

(m) Recent Accounting Pronouncements

Investments In Real Estate (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Real Estate Property Acquisitions



Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$ 123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$ 1,462.2

(1)	Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2)	9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3)	In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives



	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)

Net	$	357,372		$	232,910

Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)

Net	$	68,269		$	29,701

Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)

Net	$	152,876		$	85,819

Schedule Of Pro Forma Operating Revenues And Operating Income


	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012 ⁽¹⁾	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011 ⁽¹⁾		305.4		84.1		887.1		260.5


⁽¹⁾	These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

Schedule Of Real Estate Property Acquisitions



Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$ 123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$ 1,462.2

(1)	Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2)	9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3)	In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives



	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)

Net	$	357,372		$	232,910

Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)

Net	$	68,269		$	29,701

Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)

Net	$	152,876		$	85,819

Schedule Of Pro Forma Operating Revenues And Operating Income


	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012 ⁽¹⁾	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011 ⁽¹⁾		305.4		84.1		887.1		260.5


⁽¹⁾	These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

Sentrum Portfolio [Member]

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives


	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

Sentrum Portfolio [Member] | Digital Realty Trust, L.P. [Member]

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives


	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1486-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph F4
-Subparagraph e
-Appendix F

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Acquired Intangible Assets And Liabilities (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Acquired Intangible Assets



	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)

Net	$	357,372		$	232,910

Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)

Net	$	68,269		$	29,701

Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)

Net	$	152,876		$	85,819

Summary Of Acquired Intangible Assets



	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)

Net	$	357,372		$	232,910

Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)

Net	$	68,269		$	29,701

Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)

Net	$	152,876		$	85,819

Acquired Below-Market Lease Value [Member]

Schedule Of Estimated Annual Amortization Of Leases



(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Acquired Below-Market Lease Value [Member] | Digital Realty Trust, L.P. [Member]

Schedule Of Estimated Annual Amortization Of Leases



(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Acquired In Place Lease Value [Member]

Schedule Of Estimated Annual Amortization Of Leases



(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

Acquired In Place Lease Value [Member] | Digital Realty Trust, L.P. [Member]

Schedule Of Estimated Annual Amortization Of Leases



(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

Debt Of The Operating Partnership (Tables) - Digital Realty Trust, L.P. [Member]

9 Months Ended

Sep. 30, 2012

Summary Of Outstanding Indebtedness Of The Operating Partnership



Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Global revolving credit facility	Various	(1)	Nov. 3, 2015		$ 526,372	(2)	$ 275,106	(2)

Unsecured term loan	Various	(3)(9)	Apr. 16, 2017		$ 754,935	(4)	$ -

Unsecured senior notes:
Prudential Shelf Facility:
Series B	9.320%		Nov. 5, 2013		33,000		33,000
Series C	9.680%		Jan. 6, 2016		25,000		25,000
Series D	4.570%		Jan. 20, 2015		50,000		50,000
Series E	5.730%		Jan. 20, 2017		50,000		50,000
Series F	4.500%		Feb. 3, 2015		17,000		17,000
Total Prudential Shelf Facility					175,000		175,000
Senior Notes:
4.50% notes due 2015	4.500%		Jul. 15, 2015		375,000		375,000
5.875% notes due 2020	5.875%		Feb. 1, 2020		500,000		500,000
5.25% notes due 2021	5.250%		Mar. 15, 2021		400,000		400,000
3.625% notes due 2022	3.625%		Oct. 1, 2022		300,000		-
Unamortized discounts					(12,119)		(8,928)
Total senior notes, net of discount					1,562,881		1,266,072
Total unsecured senior notes, net of discount					1,737,881		1,441,072

5.50% exchangeable senior debentures due 2029	5.50%		Apr. 15, 2029	(5)	266,400		266,400
Total exchangeable senior debentures					266,400		266,400



Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Mortgage loans:
Secured Term Debt (6)(7)	5.65%		Nov. 11, 2014		136,726		138,828
200 Paul Avenue 1-4 (7)	5.74%		Oct. 8, 2015		73,114		74,458
Mundells Roundabout	3-month GBP LIBOR + 1.20%	(9)	Nov. 30, 2013		69,235	(10)	66,563	(10)
2045 & 2055 LaFayette Street (7)	5.93%		Feb. 6, 2017		64,864		65,551
34551 Ardenwood Boulevard 1-4 (7)	5.95%		Nov. 11, 2016		53,102		53,627
1100 Space Park Drive (7)	5.89%		Dec. 11, 2016		53,078		53,609
1350 Duane Avenue/3080 Raymond Street (7)	5.42%		Oct. 1, 2012	(13)	-		52,800
600 West Seventh Street	5.80%		Mar. 15, 2016		51,566		52,709
150 South First Street (7)	6.30%		Feb. 6, 2017		51,008		51,508
360 Spear Street (7)	6.32%		Nov. 8, 2013		46,862		47,569
114 Rue Ambroise Croizat	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		39,483	(11)
2334 Lundy Place (7)	5.96%		Nov. 11, 2016		38,621		39,003
Clonshaugh Industrial Estate II (8)	3-month EURIBOR + 4.50%	(9)	Sep. 4, 2014		38,580	(11)	38,883	(11)
1500 Space Park Drive (7)	6.15%		Oct. 5, 2013		36,247		37,875
Unit 9, Blanchardstown Corporate Park	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		33,946	(11)
Cressex 1 (12)	5.68%		Oct. 16, 2014		28,529	(10)	27,786	(10)
1201 Comstock Street (7)	1-month LIBOR + 3.50%		Jun. 24, 2012	(13)	-		16,163
Paul van Vlissingenstraat 16	3-month EURIBOR + 1.60%	(9)	Jul. 18, 2013		13,053	(11)	13,319	(11)
2805 Lafayette Street (7)(14)	1-month LIBOR + 4.75%		Jun. 9, 2013	(13)	-		10,000
Chemin de l'Epinglier 2	3-month EURIBOR + 1.50%	(9)	Jul. 18, 2013		9,444	(11)	9,636	(11)
Gyroscoopweg 2E-2F	3-month EURIBOR + 1.50%	(9)	Oct. 18, 2013		8,312	(11)	8,480	(11)
Manchester Technopark (12)	5.68%		Oct. 16, 2014		8,679	(10)	8,453	(10)
8025 North Interstate 35	4.09%		Mar. 6, 2017		6,621		-
731 East Trade Street	8.22%		Jul. 1, 2020		4,586		4,806
Unamortized net premiums					2,258		2,077
Total mortgage loans, net of premiums					794,485		947,132
Other secured loan:
2805 Lafayette Street Mezzanine (7)(14)	1-month LIBOR + 8.50%		Jun. 9, 2013	(13)	-		10,500
Total other secured loan					-		10,500
Total indebtedness					$ 4,080,073		$ 2,940,210


(1)	The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.


2)	Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$ -		0.00%	$ 194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$ 526,372		1.99%	$ 275,106		1.67%


	(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
	(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.


(3)	Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances.


(4)	Balances as of September 30, 2012 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%

	$	754,935			1.89	%


	(a)	Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

(5)


(6)	This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.


(7)	The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.


(8)	The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.


(9)	We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollar tranches of the unsecured term loan. See note 13 for further information.


(10)	Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.


(11)	Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.


(12)	These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.



(13)	These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street (May 2012), 2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.
(14)	Property formerly referred to as 800 Central Expressway.

Schedule Of Debt Maturities And Principal Maturities



	Global Revolving Credit Facility (1)	Unsecured Term Loan	Unsecured Senior Notes	Senior Notes	Exchangeable Senior Debentures (3)	Mortgage Loans (2)	Total Debt
Remainder of 2012	$ -	$ -	$ -	$ -	$ -	$ 3,765	$ 3,765
2013	-	-	33,000	-	-	193,837	226,837
2014	-	-	-	-	266,400	216,388	482,788
2015	526,372	-	67,000	375,000	-	75,493	1,043,865
2016	-	-	25,000	-	-	191,979	216,979
Thereafter	-	754,935	50,000	1,200,000	-	110,765	2,115,700
Subtotal	$ 526,372	$ 754,935	$ 175,000	$ 1,575,000	$ 266,400	$ 792,227	$ 4,089,934
Unamortized discount	-	-	-	(12,119)	-	-	(12,119)
Unamortized premium	-	-	-	-	-	2,258	2,258
Total	$ 526,372	$ 754,935	$ 175,000	$ 1,562,881	$ 266,400	$ 794,485	$ 4,080,073


(1)	Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

(2)


(3)	Assumes maturity of the 2029 Debentures at their first redemption date in April 2014.

Global Revolving Credit Facility [Member]

Schedule Of Balances And Foreign Currency Translation Revolving Credit Facilities



Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$ -		0.00%	$ 194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$ 526,372		1.99%	$ 275,106		1.67%


	(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
	(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

Unsecured Term Loan [Member]

Schedule Of Balances And Foreign Currency Translation Revolving Credit Facilities



Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%

	$	754,935			1.89	%


	(a)	Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

Income Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Income Per Share [Abstract]

Summary Of Basic And Diluted Earnings Per Share



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common stockholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average shares outstanding—basic	122,026,421	100,588,235	112,995,512	96,137,611
Potentially dilutive common shares:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average shares outstanding—diluted	122,353,511	101,912,342	113,275,221	97,316,650
Income per share:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	4,345,574	4,481,045	4,346,586	4,708,129
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Stock	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Stock	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Stock	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable Preferred Stock	2,632,647	-	1,243,998	-
	21,863,563	19,237,146	21,504,743	20,890,149

Income Per Unit (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Basic And Diluted Earnings Per Share



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common stockholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average shares outstanding—basic	122,026,421	100,588,235	112,995,512	96,137,611
Potentially dilutive common shares:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average shares outstanding—diluted	122,353,511	101,912,342	113,275,221	97,316,650
Income per share:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	4,345,574	4,481,045	4,346,586	4,708,129
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Stock	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Stock	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Stock	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable Preferred Stock	2,632,647	-	1,243,998	-
	21,863,563	19,237,146	21,504,743	20,890,149

Summary Of Basic And Diluted Earnings Per Share



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common unitholders	$ 47,189	$ 33,329	$ 131,668	$ 99,533
Weighted average units outstanding--basic	126,242,751	105,069,280	117,291,480	100,845,740
Potentially dilutive common units:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred units	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average units outstanding--diluted	126,569,841	106,393,387	117,571,189	102,024,779
Income per unit:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share



	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2011	2010
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Units	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Units	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Units	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable Preferred Units	2,632,647	-	1,243,998	-
	17,517,989	14,756,101	17,158,157	16,182,020

Equity And Accumulated Other Comprehensive Loss, Net (Tables)

9 Months Ended

Sep. 30, 2012

Equity And Accumulated Other Comprehensive Loss, Net [Abstract]

Ownership Interest In The Operating Partnership



	September 30, 2012			December 31, 2011
	Number of units	Percentage of total		Number of units	Percentage of total
Digital Realty Trust, Inc.	123,261,390	96.4	%	106,039,279	95.6	%
Noncontrolling interests consist of:
Common units held by third parties	3,131,814	2.4		3,405,814	3.0
Incentive units held by employees and directors (see note 12)	1,494,254	1.2		1,530,316	1.4
	127,887,458	100.0	%	110,975,409	100.0	%

Summary Of Activity For Noncontrolling Interests In The Operating Partnership



	Common Units	Incentive Units	Total
As of December 31, 2011	3,405,814	1,530,316	4,936,130
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (1)	(274,000)	-	(274,000)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1)	-	(186,192)	(186,192)
Cancellation of incentive units held by employees and directors	-	(15,950)	(15,950)
Grant of incentive units to employees and directors	-	166,080	166,080
As of September 30, 2012	3,131,814	1,494,254	4,626,068


(1)	This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

Schedule Of Distributions



Date dividend declared	Dividend payable date	Series C Preferred Stock (1)(6)	Series D Preferred Stock (2)	Series E Preferred Stock (3)	Series F Preferred Stock (4)		Common Stock (5)

February 14, 2012	Mar. 30, 2012	$ 1,402	$ 2,398	$ 5,031	$ -		$ 78,335
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	⁽⁷⁾	80,478
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		89,679

		$ 1,402	$ 6,515	$ 15,093	$ 5,911		$ 248,492


(1)	$1.094 annual rate of dividend per share.


(2)	$1.375 annual rate of dividend per share.


(3)	$1.750 annual rate of dividend per share.


(4)	$1.656 annual rate of dividend per share.


(5)	$2.920 annual rate of dividend per share.


(6)	Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.


(7)	Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Schedule Of Accumulated Other Comprehensive Loss, Net



	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss, net
Balance as of December 31, 2011	$ (49,298)	$ (6,582)	$ (55,880)
Net current period change	35,053	(6,553)	28,500
Reclassification to interest expense from interest rate swaps	-	2,856	2,856
Balance as of September 30, 2012	$ (14,245)	$ (10,279)	$ (24,524)

Capital And Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Distributions



Date dividend declared	Dividend payable date	Series C Preferred Stock (1)(6)	Series D Preferred Stock (2)	Series E Preferred Stock (3)	Series F Preferred Stock (4)		Common Stock (5)

February 14, 2012	Mar. 30, 2012	$ 1,402	$ 2,398	$ 5,031	$ -		$ 78,335
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	⁽⁷⁾	80,478
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		89,679

		$ 1,402	$ 6,515	$ 15,093	$ 5,911		$ 248,492


(1)	$1.094 annual rate of dividend per share.


(2)	$1.375 annual rate of dividend per share.


(3)	$1.750 annual rate of dividend per share.


(4)	$1.656 annual rate of dividend per share.


(5)	$2.920 annual rate of dividend per share.


(6)	Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.


(7)	Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Schedule Of Distributions



Date distribution declared	Distribution payable date	Series C Preferred Units (1)(6)	Series D Preferred Units (2)	Series E Preferred Units (3)	Series F Preferred Units (4)		Common Units (5)

February 14, 2012	Mar. 30, 2012	$ 1,402	$ 2,398	$ 5,031	$ -		$ 81,917
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	⁽⁷⁾	83,982
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		93,076

		$ 1,402	$ 6,515	$ 15,093	$ 5,911		$ 258,975


(1)	$1.094 annual rate of distribution per unit.


(2)	$1.375 annual rate of distribution per unit.


(3)	$1.750 annual rate of distribution per unit.


(4)	$1.656 annual rate of distribution per unit.


(5)	$2.920 annual rate of distribution per unit.

(6)


(7)	Represents a pro rata distribution from and including the original issue date to and including June 30, 2012.

Schedule Of Accumulated Other Comprehensive Loss



	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss
Balance as of December 31, 2011	$ (52,704)	$ (7,363)	$ (60,067)
Net current period change	36,286	(6,796)	29,490
Reclassification to interest expense from interest rate swaps	-	2,964	2,964
Balance as of September 30, 2012	$ (16,418)	$ (11,195)	$ (27,613)

Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Incentive Award Plan's Stock Option



	Period ended September 30, 2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73

Options outstanding, end of period		129,909		$	30.62

Exercisable, end of period		129,909		$	30.62

Summary Of Stock Options Outstanding And Exercisable



Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392

		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

Summary Of Incentive Award Plan's Stock Option



	Period ended September 30, 2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73

Options outstanding, end of period		129,909		$	30.62

Exercisable, end of period		129,909		$	30.62

Summary Of Stock Options Outstanding And Exercisable



Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392

		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Outstanding Derivative Instruments



Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$ 69,235	(1)	$ 66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$ (1,970)	$ (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$ 703,920		$ 246,973							$ (9,358)	$ (5,484)


(1)	Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.


(2)	Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.


(3)	The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.


(4)	This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.


(5)	This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.


(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

Schedule Of Outstanding Derivative Instruments



Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$ 69,235	(1)	$ 66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$ (1,970)	$ (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$ 703,920		$ 246,973							$ (9,358)	$ (5,484)


(1)	Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.


(2)	Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.


(3)	The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.


(4)	This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.


(5)	This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.


(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

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-SubTopic 10
-Section 50
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Estimated Fair Value And Carrying Amounts

Fair Value Of Instruments (Tables)

9 Months Ended

Sep. 30, 2012



	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$ 526,372	$ 526,372	$ 275,106	$ 275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$ 4,515,864	$ 4,080,073	$ 3,234,007	$ 2,940,210


(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.


(3)	Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.


(4)	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

Estimated Fair Value And Carrying Amounts



	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$ 526,372	$ 526,372	$ 275,106	$ 275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$ 4,515,864	$ 4,080,073	$ 3,234,007	$ 2,940,210


(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.


(3)	Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.


(4)	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Schedule Of Dividends Declared And Distributions Per Unit

Subsequent Events (Tables)

9 Months Ended

Sep. 30, 2012



Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

Schedule Of Dividends Declared And Distributions Per Unit



Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

Organization And Description Of Business (Narrative) (Details)	Sep. 30, 2012 property
Organization and Description of Business [Line Items]
Number of properties owned	110
Common Interest [Member]
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	96.40%
Preferred Interest [Member]
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	100.00%
Joint Ventures [Member]
Organization and Description of Business [Line Items]
Number of properties held as investments in unconsolidated joint ventures	3
North America [Member]
Organization and Description of Business [Line Items]
Number of properties owned	91
Europe [Member]
Organization and Description of Business [Line Items]
Number of properties owned	18
Asia [Member]
Organization and Description of Business [Line Items]
Number of properties owned	1

Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($) d	Sep. 30, 2011 USD ($)	Dec. 31, 2011 USD ($)
Summary Of Significant Accounting Policies [Abstract]
Period in which short-term investment become cash equivalents (days) \| d			90
Assets or liabilities for uncertain tax positions	$ 0.0		$ 0.0		$ 0.0
Interest or penalties from uncertain tax positions	0.0	$ 0.0	0.0	$ 0.0
Asset retirement obligations	1.7		1.7		$ 1.2
Interest capitalized	4.5	4.8	13.6	13.6
Compensation costs, leasing and construction activities	$ 8.0	$ 6.5	23.3	18.8
Cash flows from capitalized leasing costs			$ 26.5	$ 19.1

Investments In Real Estate (Narrative) (Details)
$ in Thousands, £ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

Jul. 11, 2012

GBP (£)

ft²

Sep. 30, 2012

USD ($)

Sep. 30, 2011

USD ($)

Jun. 30, 2012

USD ($)

Sep. 30, 2012

USD ($)

Sep. 30, 2011

USD ($)

Jul. 11, 2012

USD ($)

ft²

Jun. 26, 2012

ft²

Dec. 31, 2011

USD ($)

Acquired in place lease value, Net

$ 1,462,200

492,393

$ 335,381

Acquired above market leases, Net

68,269

$ 29,701

Operating revenue

342,479

$ 273,476

929,331

$ 792,098

Operating income

97,075

$ 71,626

$ 271,440

$ 223,011

Sentrum Portfolio [Member]

Square footage of real estate property | ft²

Jul. 11, 2012

^[1]

733,000

Acquisition allocation to land

£ 734.6

1,138,600

^[1]

$ 1,138,600

^[1]

$ 1,100,000

18,100

Acquisition allocation to ground leases

7,000

Acquisition allocation to buildings and improvements

1,200,000

Acquisition allocation to tenant improvements

11,600

Acquisition allocation to intangible assets

151,600

Acquired in place lease value, Net

107,200

Acquired above market leases, Net

44,400

Acquisition allocation to intangible liabilities

$ 38,200

Operating revenue

28,400

Operating income

$ 6,800

Savvis Joint Venture Property, Hong Kong [Member]

Square footage of real estate property | ft²

Jun. 26, 2012

164,000

$ 20,600

[1]

On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

Investments In Real Estate (Schedule Of Real Estate Property Acquisitions) (Details)
£ in Millions, $ in Millions

9 Months Ended

Jul. 11, 2012

GBP (£)

ft²

property

Jul. 11, 2012

USD ($)

Sep. 30, 2012

GBP (£)

property

Sep. 30, 2012

USD ($)

property

Jul. 11, 2012

USD ($)

ft²

property

Expected fair value of contingent consideration

$ 1,462.2

£ 56.5

91.3

Convergence Business Park [Member]

^[1]

Dallas, Texas

Number of properties | property

^[1]

$ 123.0

Number of buildings

9333, 9355, 9377 Grand Avenue [Member]

^[1]

Feb. 22, 2012

^[2]

Chicago, Illinois

Number of properties | property

^[2]

$ 22.3

Number of buildings

8025 North Interstate 35 [Member]

^[2]

May 10, 2012

^[3]

Austin, Texas

Secured mortgage loan assumed in acquisition

^[3]

$ 12.5

6.7

400 S. Akard Street [Member]

^[3]

May 18, 2012

Dallas, Texas

75.0

Sentrum Portfolio [Member]

Jun. 13, 2012

^[4]

London, England

Number of properties | property

£ 734.6

1,138.6

^[4]

$ 1,100.0

Square footage of real estate property | ft²

Jul. 11, 2012

^[4]

733,000

Adjustment to purchase price

1.55

£ 18.7

$ 29.0

Expected fair value of contingent consideration

56.5

$ 87.6

Purchase adjustment related to deferred taxes

£ 68.6

$ 106.3

11900 East Cornell Avenue [Member]

Denver, Colorado

$ 90.8

Investments In Real Estate [Abstract]

Sep. 14, 2012

[1]	Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.
[2]	9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.
[3]	In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.
[4]	On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

Investments In Real Estate (Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives) (Details)	9 Months Ended
	Sep. 30, 2012
Acquired In Place Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	7 years 4 months 24 days
Acquired Above-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	5 years 9 months 18 days
Acquired Below-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	7 years 6 months
Sentrum Portfolio [Member] \| Acquired In Place Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	11 years 6 months
Sentrum Portfolio [Member] \| Acquired Above-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	7 years 3 months 18 days
Sentrum Portfolio [Member] \| Acquired Below-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	11 years

Investments In Real Estate (Schedule Of Pro Forma Operating Revenues And Operating Income) (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2012

Sep. 30, 2011

Sep. 30, 2012

Sep. 30, 2011

Pro Forma, Operating Revenue

^[1]

$ 345.9

$ 305.4

$ 995.9

$ 887.1

Pro forma, Operating Income

^[1]

$ 98.4

$ 84.1

$ 297.8

$ 260.5

[1]	These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

Acquired Intangible Assets And Liabilities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Acquired Below-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired above-market (below-market) lease	$ (2.3)	$ (2.0)	$ (7.4)	$ (5.7)
Expected remaining lives (years)			7 years 6 months
Acquired Above-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Expected remaining lives (years)			5 years 9 months 18 days
Acquired In Place Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Costs incurred to renew or extend leases	$ 14.5	$ 13.5	$ 38.9	$ 41.3
Expected remaining lives (years)			7 years 4 months 24 days
Weighted average period prior to renewal (years)			5 years 10 months 24 days

Acquired Intangible Assets And Liabilities (Summary Of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Acquired in place lease value, Net	$ 492,393	$ 335,381
Acquired above market leases, Net	68,269	29,701
Acquired below market leases, Net	152,876	85,819
Acquired In Place Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired in place lease, Gross amount	708,968	545,409
Accumulated amortization	(351,596)	(312,499)
Acquired in place lease value, Net	357,372	232,910
Acquired Above-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, Gross amount	134,079	87,800
Accumulated amortization	(65,810)	(58,099)
Acquired above market leases, Net	68,269	29,701
Acquired Below-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired below market leases, Gross amount	283,543	201,275
Accumulated amortization	(130,667)	(115,456)
Acquired below market leases, Net	$ 152,876	$ 85,819

Acquired Intangible Assets And Liabilities (Schedule Of Estimated Annual Amortization Of Leases) (Details) $ in Thousands	Sep. 30, 2012 USD ($)
Acquired Below-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
2013	$ 11,091
2014	9,161
2015	8,044
2016	7,137
2017	5,613
Acquired In Place Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
2013	57,995
2014	52,791
2015	44,109
2016	41,653
2017	$ 26,947

Debt Of The Company (Details)	9 Months Ended
Debt Of The Company (Details)	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
3.625% Notes Due 2022 [Member]
Debt Instrument [Line Items]
Interest rate	3.625%	3.625%
Maturity date	2022	2022
Exchangeable Senior Debentures [Member]
Debt Instrument [Line Items]
Interest rate			4.125%
Exchangeable Senior Debentures [Member] \| 5.50% Exchangeable Senior Debentures Due 2029 [Member]
Debt Instrument [Line Items]
Interest rate	5.50%
Maturity date	2029
Senior Notes [Member] \| 4.50% Notes Due 2015 [Member]
Debt Instrument [Line Items]
Interest rate	4.50%
Maturity date	2015
Senior Notes [Member] \| 5.875% Notes Due 2020 [Member]
Debt Instrument [Line Items]
Interest rate	5.875%
Maturity date	2020
Senior Notes [Member] \| 5.25% Notes Due 2021 [Member]
Debt Instrument [Line Items]
Interest rate	5.25%
Maturity date	2021
Senior Notes [Member] \| 3.625% Notes Due 2022 [Member]
Debt Instrument [Line Items]
Interest rate	3.625%
Maturity date	2022

Debt Of The Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) - Global Revolving Credit Facility [Member] - Digital Realty Trust, L.P. [Member]
$ in Thousands

9 Months Ended

Sep. 30, 2012

USD ($)

Aug. 10, 2012

USD ($)

Dec. 31, 2011

USD ($)

Nov. 03, 2011

USD ($)

Revolving credit facility borrowing capacity

$ 1,800,000

$ 1,500,000

$ 850,000

Revolving credit facility maturity date

November 2015

Revolving credit facility commitments extension (years)

1 year

Revolving credit facility basis spread on variable rate

125

Basis rate for unused portion of the credit facility

Line of credit facility interest rate description

As of September 30, 2012, borrowings under the global revolving credit facility bore interest at a blended rate of 1.79% (GBP), 1.56% (Singapore Dollars), 4.83% (Australian Dollars) and 1.55% (Hong Kong Dollars), which are based on 1-month GBP LIBOR, 1-month SIBOR, 1-month BBR and 1-month HIBOR, respectively, plus a margin of 1.25%.

Interest rate basis spread

1.25%

Capitalized financing costs related to global revolving facilities

$ 11,200

Letter of credit security amount

^[1]

526,372

$ 275,106

$ 22,400

1.79%

1-month GBP LIBOR

$ 447,018

^[2]

49,892

^[3]

1.56%

1-month SIBOR

$ 21,183

^[2]

28,151

^[3]

AUD [Member]

4.83%

1-month BBR

$ 39,021

^[2]

$ 3,063

^[3]

HKD [Member]

1.55%

1-month HIBOR

Accordian Feature [Member]

^[2]

$ 19,150

Revolving credit facility borrowing capacity

$ 2,250,000

[1]

2)	Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$ -		0.00%	$ 194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$ 526,372		1.99%	$ 275,106		1.67%


	(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
	(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

[2]

Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.

[3]

Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) - Unsecured Term Loan [Member] - Digital Realty Trust, L.P. [Member]
$ in Thousands

1 Months Ended

9 Months Ended

Jul. 31, 2012

USD ($)

Sep. 30, 2012

USD ($)

Credit facility, initiation date

Apr. 17, 2012

Credit facility, maximum borrowing capacity

$ 750,000

Maturity date

Apr. 16, 2017

Senior unsecured debt basis spread on variable rate

145

Delay draw available from date of close

$ 250,000

Additional amount borrowed during the month

$ 225,000

Capitalized financing costs

^[1]

754,935

$ 5,300

[1]


(4)	Balances as of September 30, 2012 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%

	$	754,935			1.89	%


	(a)	Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

Debt Of The Operating Partnership (3.625% Notes Due 2022) (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2011
Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Unamortized discount	$ 12,119	$ 8,928
3.625% Notes Due 2022 [Member]
Debt of the Operating Partnership [Line Items]
Interest rate	3.625%		3.625%
3.625% Notes Due 2022 [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Issuance date	Sep. 24, 2012
Senior face amount	$ 300,000
Maturity date	Oct. 01, 2022
Interest rate	3.625%		3.625%
Purchase price paid, percentage of face amount	98.684%
Unamortized discount	$ 3,900
Debt issuance cost	3,000
Borrowings on unsecured senior notes	$ 293,100
Leverage ratio percentage	60.00%
Secured debt ratio percentage	40.00%
Interest coverage ratio	1.50
Unencumbered assets percentage to unsecured debt	150.00%

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Global Revolving Credit Facility) (Details)
$ in Thousands

9 Months Ended

Sep. 30, 2012

USD ($)

Dec. 31, 2011

USD ($)

Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

Revolving credit facilities interest rates

^[1]

Various

Nov. 03, 2015

Revolving credit facility basis spread on variable rate

^[2]

$ 526,372

$ 275,106

125

Basis rate for unused portion of the credit facility

USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

1.99%

1.67%

$ 194,000

0.00%

1.54%

1.62

1.55

1.29

1.30

GBP [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

1.62

1.55

$ 447,018

^[3]

$ 49,892

^[4]

1.79%

1.99%

SGD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

0.81

$ 21,183

^[3]

$ 28,151

^[4]

1.56%

AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

0.81

0.77

$ 39,021

^[3]

$ 3,063

^[4]

4.83%

5.89%

HKD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

1.04

1.02

^[3]

$ 19,150

1.55%

Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

0.13

[1]

The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.

[2]

2)	Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$ -		0.00%	$ 194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$ 526,372		1.99%	$ 275,106		1.67%


	(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
	(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

[3]

Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.

[4]

Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Term Loan) (Details)
$ in Thousands

9 Months Ended

Sep. 30, 2012

USD ($)

Dec. 31, 2011

Revolving credit facilities interest rates

Various

Apr. 16, 2017

Revolving credit facility basis spread on variable rate

^[1]

$ 754,935

145

USD [Member] | Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

1.89%

$ 410,905

1.67%

SGD [Member] | Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

0.81

^[2]

$ 154,391

1.81%

0.81

GBP [Member] | Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

1.62

1.55

^[2]

$ 90,697

1.97%

1.62

EUR [Member] | Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

1.29

1.30

^[2]

$ 63,657

1.57%

AUD [Member] | Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

1.29

^[2]

$ 35,285

5.03%

1.04

[1]


(4)	Balances as of September 30, 2012 are as follows (balances, in thousands):



Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%

	$	754,935			1.89	%


	(a)	Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

[2]

Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Senior Notes) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Debt of the Operating Partnership [Line Items]
Unsecured senior notes, net of discount	$ 1,737,881	$ 1,441,072
Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Subtotal	4,089,934
Unamortized discounts	(12,119)	(8,928)
Principal Outstanding (Senior notes)	1,562,881	1,266,072
Unsecured senior notes, net of discount	$ 1,737,881	1,441,072
3.625% Notes Due 2022 [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	3.625%		3.625%
3.625% Notes Due 2022 [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	3.625%		3.625%
Maturity Date	Oct. 01, 2022
Unamortized discounts	$ (3,900)
Prudential Shelf Facility [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Subtotal	$ 175,000	175,000
Prudential Shelf Facility [Member] \| Series B [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	9.32%
Maturity Date	Nov. 05, 2013
Subtotal	$ 33,000	33,000
Prudential Shelf Facility [Member] \| Series C [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	9.68%
Maturity Date	Jan. 06, 2016
Subtotal	$ 25,000	25,000
Prudential Shelf Facility [Member] \| Series D [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	4.57%
Maturity Date	Jan. 20, 2015
Subtotal	$ 50,000	50,000
Prudential Shelf Facility [Member] \| Series E [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	5.73%
Maturity Date	Jan. 20, 2017
Subtotal	$ 50,000	50,000
Prudential Shelf Facility [Member] \| Series F [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	4.50%
Maturity Date	Feb. 03, 2015
Subtotal	$ 17,000	17,000
Senior Notes [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Subtotal	1,575,000
Unamortized discounts	(12,119)
Principal Outstanding (Senior notes)	$ 1,562,881
Senior Notes [Member] \| 4.50% Notes Due 2015 [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	4.50%
Senior Notes [Member] \| 4.50% Notes Due 2015 [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	4.50%
Maturity Date	Jul. 15, 2015
Subtotal	$ 375,000	375,000
Senior Notes [Member] \| 5.875% Notes Due 2020 [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	5.875%
Senior Notes [Member] \| 5.875% Notes Due 2020 [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	5.875%
Maturity Date	Feb. 01, 2020
Subtotal	$ 500,000	500,000
Senior Notes [Member] \| 5.25% Notes Due 2021 [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	5.25%
Senior Notes [Member] \| 5.25% Notes Due 2021 [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	5.25%
Maturity Date	Mar. 15, 2021
Subtotal	$ 400,000	$ 400,000
Senior Notes [Member] \| 3.625% Notes Due 2022 [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	3.625%
Senior Notes [Member] \| 3.625% Notes Due 2022 [Member] \| Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate	3.625%
Maturity Date	Oct. 01, 2022
Subtotal	$ 300,000

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Exchangeable Senior Debentures) (Details)
$ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2012

USD ($)

Dec. 31, 2011

USD ($)

$ 266,400

Purchase price/Redemption price percentage of debenture principal

$ 266,400

100

Exchangeable Senior Debentures [Member]

4.125%

Exchangeable Senior Debentures [Member] | Digital Realty Trust, L.P. [Member]

Aug. 15, 2026

Exchangeable Senior Debentures [Member] | 5.50% Exchangeable Senior Debentures Due 2029 [Member]

$ 266,400

Exchangeable Senior Debentures [Member] | 5.50% Exchangeable Senior Debentures Due 2029 [Member] | Digital Realty Trust, L.P. [Member]

5.50%

5.50%

^[1]

Apr. 15, 2029

$ 266,400

[1]

The ratio applied to the debt for purposes of determining the number of shares of the equity security into which the debt will be converted.

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Mortgage Loans) (Details)
$ in Thousands, £ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2012

USD ($)

Sep. 30, 2012

USD ($)

Sep. 30, 2012

GBP (£)

Sep. 30, 2012

USD ($)

Dec. 31, 2011

USD ($)

$ 794,485

$ 947,132

1.62

1.55

1.29

1.30

Unamortized net premium

$ 2,258

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member]

794,485

$ 947,132

Unamortized net premium

2,258

^[1]

2,077

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Secured Term Debt [Member]

^[1]

$ 794,485

^[2],[3]

5.65%

^[2],[3]

Nov. 11, 2014

Mortgage loans on real estate, number

^[2],[3]

$ 136,726

138,828

Number of properties

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 200 Paul Avenue 1-4 [Member]

^[2]

5.74%

^[2]

Oct. 08, 2015

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Mundells Roundabout [Member]

^[2]

$ 73,114

74,458

^[4]

3-month GBP LIBOR + 1.20%

1.20%

Nov. 30, 2013

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 2045 & 2055 LaFayette Street [Member]

^[5]

$ 69,235

66,563

^[2]

5.93%

^[2]

Feb. 06, 2017

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 34551 Ardenwood Boulevard 1-4 [Member]

^[2]

$ 64,864

65,551

^[2]

5.95%

^[2]

Nov. 11, 2016

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 1100 Space Park Drive [Member]

^[2]

$ 53,102

53,627

^[2]

5.89%

^[2]

Dec. 11, 2016

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 1350 Duane Avenue/3080 Raymond Street [Member]

^[2]

$ 53,078

53,609

^[2]

5.42%

^[2],[6]

Oct. 01, 2012

^[2]

52,800

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 600 West Seventh Street [Member]

September 2012

5.80%

Mar. 15, 2016

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 150 South First Street [Member]

$ 51,566

52,709

^[2]

6.30%

^[2]

Feb. 06, 2017

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 360 Spear Street [Member]

^[2]

$ 51,008

51,508

^[2]

6.32%

^[2]

Nov. 08, 2013

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 114 Rue Ambroise Croizat [Member]

^[2]

$ 46,862

47,569

3-month EURIBOR + 1.35%

1.35%

^[6]

Jan. 18, 2012

^[7]

39,483

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 2334 Lundy Place [Member]

January 2012

^[2]

5.96%

^[2]

Nov. 11, 2016

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Clonshaugh Industrial Estate II [Member]

^[2]

$ 38,621

39,003

^[4],[8]

3-month EURIBOR + 4.50%

4.50%

^[8]

Sep. 04, 2014

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 1500 Space Park Drive [Member]

^[7],[8]

$ 38,580

38,883

^[2]

6.15%

^[2]

Oct. 05, 2013

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Unit 9, Blanchardstown Corporate Park [Member]

^[2]

$ 36,247

37,875

3-month EURIBOR + 1.35%

1.35%

^[6]

Jan. 18, 2012

^[7]

33,946

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Cressex 1 [Member]

January 2012

^[9]

5.68%

^[9]

Oct. 16, 2014

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 1201 Comstock Street [Member]

^[5],[9]

$ 28,529

27,786

^[2]

1-month LIBOR + 3.50%

3.50%

^[2],[6]

Jun. 24, 2012

^[2]

16,163

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Paul van Vlissingenstraat 16 [Member]

April 2012

^[4]

3-month EURIBOR + 1.60%

1.60%

Jul. 18, 2013

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 2805 Lafayette Street [Member]

^[7]

$ 13,053

13,319

^[2],[10]

1-month LIBOR + 4.75%

4.75%

^[2],[6],[10]

Jun. 09, 2013

^[2],[10]

10,000

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 2805 Lafayette Street Mezzanine [Member]

May 2012

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Chemin de l'Epinglier 2 [Member]

May 2012

^[4]

3-month EURIBOR + 1.50%

1.50%

Jul. 18, 2013

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Gyroscoopweg 2E-2F [Member]

^[7]

$ 9,444

9,636

^[4]

3-month EURIBOR + 1.50%

1.50%

Oct. 18, 2013

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Manchester Technopark [Member]

^[7]

$ 8,312

8,480

^[9]

5.68%

^[9]

Oct. 16, 2014

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 8025 North Interstate 35 [Member]

^[5],[9]

$ 8,679

8,453

4.09%

Mar. 06, 2017

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | 731 East Trade Street [Member]

$ 6,621

8.22%

Jul. 01, 2020

Digital Realty Trust, L.P. [Member] | Mortgage Loans [Member] | Cressex 1 And Manchester Technopark [Member]

$ 4,586

$ 4,806

Letter of credit security amount | £

Number of properties

£ 7.8

Digital Realty Trust, L.P. [Member] | Mortgage Loans And Other Secured Debt [Member] | 2805 Lafayette Street And 2805 Lafayette Street Mezzanine [Member]

Net loss from early extinguishment of debt

$ 300

Digital Realty Trust, L.P. [Member] | GBP [Member] | Mortgage Loans [Member]

Digital Realty Trust, L.P. [Member] | EUR [Member] | Mortgage Loans [Member]

1.62

1.55

1.29

1.30

[1]	Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).
[2]	The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.
[3]	This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.
[4]	We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollar tranches of the unsecured term loan. See note 13 for further information.
[5]	Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.
[6]	These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street (May 2012), 2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.
[7]	Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.
[8]	The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.
[9]	These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.
[10]	Property formerly referred to as 800 Central Expressway.

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Other Secured Loan) (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2012

Dec. 31, 2011

$ 10,500

Other Secured Loans [Member] | Digital Realty Trust, L.P. [Member]

10,500

Total indebtedness

$ 4,080,073

2,940,210

Other Secured Loans [Member] | 2805 Lafayette Street Mezzanine [Member] | Digital Realty Trust, L.P. [Member]

10,500

^[1],[2]

1-month LIBOR + 8.50%

8.50%

^[1],[2]

Jun. 09, 2013

Mortgage Loans And Other Secured Debt [Member] | 2805 Lafayette Street And 2805 Lafayette Street Mezzanine [Member] | Digital Realty Trust, L.P. [Member]

^[1],[2]

$ 10,500

Net loss from early extinguishment of debt

$ 300

[1]	Property formerly referred to as 800 Central Expressway.
[2]	The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

Debt Of The Operating Partnership (Schedule Of Debt Maturities And Principal Maturities) (Details) - USD ($)
$ in Thousands

9 Months Ended

Sep. 30, 2012

Dec. 31, 2011

Total, Exchangeable Senior Debentures

Total, Unsecured Debt

$ 1,737,881

$ 1,441,072

266,400

Total, Mortgage Loans

794,485

947,132

Total, Exchangeable Senior Debentures

3,765

226,837

482,788

1,043,865

216,979

2,115,700

4,089,934

Unamortized discounts

(12,119)

(8,928)

Unamortized premium

2,258

Total, Unsecured Debt

1,737,881

1,441,072

Total, Senior Notes

1,562,881

1,266,072

266,400

Total, Mortgage Loans

794,485

947,132

Total Indebtedness

4,080,073

2,940,210

Global Revolving Credit Facility [Member]

Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]

526,372

275,106

2015

^[1]

526,372

^[1]

526,372

Revolving credit facility commitments extension (years)

$ 526,372

^[1]

275,106

1 year

Unsecured Term Loan [Member]

Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]

$ 754,935

Thereafter

754,935

754,935

Unsecured Senior Notes [Member] | Digital Realty Trust, L.P. [Member]

754,935

Senior Notes [Member] | Digital Realty Trust, L.P. [Member]

33,000

67,000

25,000

50,000

175,000

Total, Unsecured Debt

175,000

2015

375,000

Thereafter

1,200,000

Exchangeable Senior Debentures [Member] | Digital Realty Trust, L.P. [Member]

1,575,000

Unamortized discounts

(12,119)

Total, Senior Notes

1,562,881

2014

266,400

Total, Exchangeable Senior Debentures

266,400

$ 266,400

266,400

First redemption date

Apr. 01, 2014

Mortgage Loans [Member] | Digital Realty Trust, L.P. [Member]

Remainder of 2012

^[2]

$ 3,765

2013

^[2]

193,837

2014

^[2]

216,388

2015

^[2]

75,493

2016

^[2]

191,979

Thereafter

^[2]

110,765

Limited recourse guarantees

^[2]

792,227

Unamortized premium

2,258

^[2]

$ 2,077

Total, Mortgage Loans

^[2]

794,485

38,600

Partial letter of credit

$ 37,200

[1]

Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

[2]

Income Per Share (Narrative) (Details) - shares	9 Months Ended	12 Months Ended
Income Per Share (Narrative) (Details) - shares	Sep. 30, 2012	Dec. 31, 2011
Shares of common stock contingently issuable	494,292
Exchangeable Senior Debentures [Member]
Interest rate		4.125%
Maturity date		Aug. 15, 2026

Income Per Share (Summary Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Per Share [Abstract]
Net income available to common stockholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average shares outstanding-basic	122,026,421	100,588,235	112,995,512	96,137,611
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)		49,163		38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock/units		914,480		308,176
Excess exchange value of the 2026 Debentures				494,292
Weighted average shares/units outstanding-diluted	122,353,511	101,912,342	113,275,221	97,316,650
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

Income Per Share (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	21,863,563	19,237,146	21,504,743	20,890,149
Weighted Average Of Operating Partnership Common Units Not Owned By Us [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,345,574	4,481,045	4,346,586	4,708,129
Potentially Dilutive 2029 Debentures [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	6,514,812	6,368,292	6,471,282	6,309,599
Potentially Dilutive Series C Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities		2,783,811	1,087,398	3,097,084
Potentially Dilutive Series D Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,219,384	5,603,998	4,309,978	6,775,337
Potentially Dilutive Series E Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,151,146		4,045,501
Potentially Dilutive Series F Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	2,632,647		1,243,998

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Income Per Unit (Narrative) (Details) - shares	9 Months Ended
Income Per Unit (Narrative) (Details) - shares	Sep. 30, 2012	Sep. 30, 2011
Shares of common stock contingently issuable	494,292
Digital Realty Trust, L.P. [Member]
Shares of common stock contingently issuable		494,292

Income Per Unit (Summary Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income available to common unitholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average units outstanding-basic	122,026,421	100,588,235	112,995,512	96,137,611
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)		49,163		38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock/units		914,480		308,176
Excess exchange value of the 2026 Debentures				494,292
Weighted average shares/units outstanding-diluted	122,353,511	101,912,342	113,275,221	97,316,650
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97
Digital Realty Trust, L.P. [Member]
Net income available to common unitholders	$ 47,189	$ 33,329	$ 131,668	$ 99,533
Weighted average units outstanding-basic	126,242,751	105,069,280	117,291,480	100,845,740
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)		49,163		38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock/units		914,480		308,176
Excess exchange value of the 2026 Debentures				494,292
Weighted average shares/units outstanding-diluted	126,569,841	106,393,387	117,571,189	102,024,779
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

Income Per Unit (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	21,863,563	19,237,146	21,504,743	20,890,149
Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	17,517,989	14,756,101	17,158,157	16,182,020
Potentially Dilutive 2029 Debentures [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	6,514,812	6,368,292	6,471,282	6,309,599
Potentially Dilutive 2029 Debentures [Member] \| Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	6,514,812	6,368,292	6,471,282	6,309,599
Potentially Dilutive Series C Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities		2,783,811	1,087,398	3,097,084
Potentially Dilutive Series C Cumulative Convertible Preferred Stock/Units [Member] \| Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities		2,783,811	1,087,398	3,097,084
Potentially Dilutive Series D Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,219,384	5,603,998	4,309,978	6,775,337
Potentially Dilutive Series D Cumulative Convertible Preferred Stock/Units [Member] \| Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,219,384	5,603,998	4,309,978	6,775,337
Potentially Dilutive Series E Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,151,146		4,045,501
Potentially Dilutive Series E Cumulative Redeemable Preferred Stock/Units [Member] \| Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,151,146		4,045,501
Potentially Dilutive Series F Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	2,632,647		1,243,998
Potentially Dilutive Series F Cumulative Redeemable Preferred Stock/Units [Member] \| Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	2,632,647		1,243,998

Income Taxes (Details)	9 Months Ended
Income Taxes (Details)	Sep. 30, 2012
Income Taxes [Abstract]
Percentage of taxable income distributed to the partnership	100.00%

Equity And Accumulated Other Comprehensive Loss, Net (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended		12 Months Ended		18 Months Ended
	Jul. 02, 2012	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Jun. 29, 2011	Dec. 31, 2009
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Net proceeds from issuance of common stock (shares)	11,500,000
Net proceeds from sale of common stock	$ 797,200
Conversion of limited partner common units to general partner common units (units)	11,500,000
Gross proceeds from the sale of common stock		$ 894,221	$ 419,619
Redemption value of OP units		$ 290,100			$ 291,500
Percentage of operating partnership common units issued		25.00%
Available indebtedness		$ 17,800
Acquisition amount		$ 1,462,200
Series F Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, issued		7,300,000			0
Preferred stock, dividend rate		6.625%			6.625%
Preferred stock dividend per share amount		$ 1.656		$ 1.65625
Preferred stock, liquidation preference per share/unit		$ 25.00			$ 25.00
April 5, 2012 [Member] \| Series F Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date		Apr. 05, 2012
Preferred stock, issued		7,300,000
Preferred stock, dividend rate		6.625%
Gross proceeds from issuance of redeemable preferred stock		$ 176,200
Preferred stock dividend per share amount		$ 1.65625
Preferred stock, liquidation preference per share/unit		$ 25.00
Preferred stock, distribution payable date		Jun. 29, 2012
Preferred stock, dividends in arrears		$ 0.395660
Preferred stock, redemption date		Apr. 05, 2017
Preferred stock, redemption price per share		$ 25.00
Shares issued upon conversion		0.6843
April 18, 2012 [Member] \| Series F Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date		Apr. 18, 2012
Preferred stock, issued		7,300,000
Preferred stock, dividend rate		6.625%
Gross proceeds from issuance of redeemable preferred stock		$ 176,200
Preferred stock dividend per share amount		$ 1.656250
Preferred stock, liquidation preference per share/unit		$ 25.00
Preferred stock, distribution payable date		Jun. 29, 2012
Preferred stock, dividends in arrears		$ 0.395660
Preferred stock, redemption date		Apr. 05, 2017
Preferred stock, redemption price per share		$ 25.00
Shares issued upon conversion		0.684300
2009 Equity Distribution Agreements [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Net proceeds from issuance of common stock (shares)						6,800,000
Net proceeds from sale of common stock			$ 176,900			$ 394,000
Aggregate offering price of the distribution agreement maximum								$ 400,000
Aggregate shares issued from the distribution agreement			3,000,000
Equity distribution agreements at an average price			$ 60.51
Payment of commissions to sales agents			$ 2,700
Gross proceeds from the sale of common stock						$ 400,000
2011 Equity Distribution Agreements [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Net proceeds from sale of common stock		$ 62,700
Aggregate offering price of the distribution agreement maximum							$ 400,000
Equity distribution agreements at an average price		$ 66.19
Payment of commissions to sales agents		$ 600
Issuance of common shares		1,000,000
Noncontrolling Interests In Consolidated Joint Ventures [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date of acquisition		May 04, 2012
Acquisition amount		$ 12,400

Equity And Accumulated Other Comprehensive Loss, Net (Ownership Interest In The Operating Partnership) (Details) - shares	Sep. 30, 2012	Dec. 31, 2011
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Partners' capital account units	123,261,390	106,039,279
Percentage of total	96.40%	95.60%
Common Units Held By Third Parties [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Common units held by third parties	3,131,814	3,405,814
Percentage of total	2.40%	3.00%
Incentive Units Held By Employees And Directors [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Incentive units held by employees and directors	1,494,254	1,530,316
Percentage of total	1.20%	1.40%
Noncontrolling Interests In Operating Partnership [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Partners' capital account units	127,887,458	110,975,409
Percentage of total	100.00%	100.00%

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Equity And Accumulated Other Comprehensive Loss, Net (Summary Of Activity For Noncontrolling Interests In The Operating Partnership) (Details)

9 Months Ended

Sep. 30, 2012

As of December 31, 2011

4,936,130

Redemption of common units for shares of Digital Realty Trust, Inc. common stock

(274,000)

^[1]

Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock

(186,192)

^[1]

Cancellation of incentive units held by employees and directors

(15,950)

Grant of incentive units to employees and directors

166,080

As of September 30, 2012

4,626,068

Common Units [Member]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

As of December 31, 2011

3,405,814

Redemption of common units for shares of Digital Realty Trust, Inc. common stock

(274,000)

^[1]

As of September 30, 2012

3,131,814

Incentive Units [Member]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

As of December 31, 2011

1,530,316

Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock

(186,192)

^[1]

Cancellation of incentive units held by employees and directors

(15,950)

Grant of incentive units to employees and directors

166,080

As of September 30, 2012

1,494,254

[1]	This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

Equity And Accumulated Other Comprehensive Loss, Net (Schedule Of Dividends) (Details) - USD ($)
$ / shares in Units, $ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Series C Cumulative Convertible Preferred Units [Member]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[1],[2]

$ 1,402

Preferred stock, conversion date

$ 1.094

Apr. 17, 2012

Shares issued upon conversion

4.375%

0.5480

Series D Cumulative Convertible Preferred Units [Member]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Dec. 31, 2012

^[3]

$ 6,515

$ 1.375

Series E Cumulative Convertible Preferred Units [Member]

5.50%

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Dec. 31, 2012

^[4]

$ 15,093

$ 1.750

Series F Cumulative Convertible Preferred Units [Member]

7.00%

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Dec. 31, 2012

^[5]

$ 5,911

$ 1.656

$ 1.65625

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

6.625%

Common Stock [Member]

Jan. 15, 2013

^[6]

$ 248,492

Common stock dividend per share amount

$ 2.920

$ 2.920

February 14, 2012 [Member]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Feb. 14, 2012

February 14, 2012 [Member] | Series C Cumulative Convertible Preferred Units [Member]

Mar. 30, 2012

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]

^[1],[2]

$ 1,402

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]

^[3]

2,398

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Common Stock [Member]

^[4]

5,031

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[6]

$ 78,335

April 23, 2012 [Member]

Apr. 23, 2012

April 23, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]

Jun. 29, 2012

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]

^[3]

$ 2,394

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]

^[4]

5,031

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Common Stock [Member]

^[5],[7]

2,888

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[6]

$ 80,478

July 19, 2012 [Member]

Jul. 19, 2012

July 19, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]

Sep. 28, 2012

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]

^[3]

$ 1,723

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]

^[4]

5,031

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Common Stock [Member]

^[5]

3,023

Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]

Series C Cumulative Convertible Preferred Units [Member]

^[6]

$ 89,679

[1]	$1.094 annual rate of dividend per share.
[2]	Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.
[3]	$1.375 annual rate of dividend per share.
[4]	$1.750 annual rate of dividend per share.
[5]	$1.656 annual rate of dividend per share.
[6]	$2.920 annual rate of dividend per share.
[7]	Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Equity And Accumulated Other Comprehensive Loss, Net (Schedule Of Accumulated Other Comprehensive Loss, Net) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps	$ 1,174	$ 1,293	$ 2,964	$ 4,467
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Ending balance	(24,524)		(24,524)
Foreign Currency Translation Adjustments [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, Beginning balance			(49,298)
Foreign currency translation adjustments, Net current period change			35,053
Foreign currency translation adjustments, Ending balance	(14,245)		(14,245)
Cash Flow Hedge Adjustments [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Beginning balance			(6,582)
Cash flow hedge adjustment, Net current period change			(6,553)
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Cash flow hedge adjustments, Ending balance	(10,279)		(10,279)
Accumulated Other Comprehensive Loss, Net [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Net current period change			28,500
Accumulated other comprehensive loss, net, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Ending balance	$ (24,524)		$ (24,524)

Capital And Comprehensive Income (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Acquisition amount	$ 1,462.2
Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Redemption value of common units	$ 290.1		$ 291.5
Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, issued	7,300,000		0
Preferred stock, dividend rate	6.625%		6.625%
Preferred stock dividend per share amount	$ 1.656	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00		$ 25.00
Series F Cumulative Convertible Preferred Units [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, dividend rate	6.625%		6.625%
Preferred stock dividend per share amount	$ 1.656
Preferred stock, liquidation preference per share/unit	$ 25.00		$ 25.00
April 5, 2012 [Member] \| Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 05, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
April 5, 2012 [Member] \| Series F Cumulative Convertible Preferred Units [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 05, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.39566
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
April 18, 2012 [Member] \| Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 18, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.656250
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
April 18, 2012 [Member] \| Series F Cumulative Convertible Preferred Units [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 18, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.656250
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
Noncontrolling Interests In Consolidated Joint Ventures [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date of acquisition	May 04, 2012
Acquisition amount	$ 12.4
Noncontrolling Interests In Consolidated Joint Ventures [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date of acquisition	May 04, 2012
Acquisition amount	$ 12.4

Capital And Comprehensive Income (Schedule Of Distributions) (Details) - USD ($)
$ / shares in Units, $ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2012

Dec. 31, 2012

Dec. 31, 2011

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[1],[2]

$ 1,402

Preferred stock, conversion date

$ 1.094

Apr. 17, 2012

Shares issued upon conversion

4.375%

0.5480

Series C Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[1],[2]

$ 1,402

Preferred stock, conversion date

$ 1.094

Apr. 17, 2012

Shares issued upon conversion

4.375%

0.5480

Series D Cumulative Convertible Preferred Units [Member]

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Dec. 31, 2012

^[3]

$ 6,515

$ 1.375

Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

5.50%

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[3]

$ 6,515

$ 1.375

Series E Cumulative Convertible Preferred Units [Member]

5.50%

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Dec. 31, 2012

^[4]

$ 15,093

$ 1.750

Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

7.00%

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[4]

$ 15,093

$ 1.750

Series F Cumulative Convertible Preferred Units [Member]

7.00%

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Dec. 31, 2012

^[5]

$ 5,911

$ 1.656

$ 1.65625

Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

6.625%

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[5]

$ 5,911

$ 1.656

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

6.625%

Common Stock [Member]

Jan. 15, 2013

^[6]

$ 248,492

Common Units, annual rate of distribution per unit

$ 2.920

$ 2.920

Common Stock [Member] | Digital Realty Trust, L.P. [Member]

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[6]

$ 258,975

February 14, 2012 [Member]

$ 2.920

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Feb. 14, 2012

February 14, 2012 [Member] | Digital Realty Trust, L.P. [Member]

Mar. 30, 2012

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Feb. 14, 2012

February 14, 2012 [Member] | Series C Cumulative Convertible Preferred Units [Member]

Mar. 30, 2012

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series C Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[1],[2]

$ 1,402

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]

^[1],[2]

1,402

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[3]

2,398

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]

^[3]

2,398

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[4]

5,031

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Common Stock [Member]

^[4]

5,031

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

February 14, 2012 [Member] | Common Stock [Member] | Digital Realty Trust, L.P. [Member]

^[6]

78,335

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[6]

$ 81,917

April 23, 2012 [Member]

Apr. 23, 2012

April 23, 2012 [Member] | Digital Realty Trust, L.P. [Member]

Jun. 29, 2012

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Apr. 23, 2012

April 23, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]

Jun. 29, 2012

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[3]

$ 2,394

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]

^[3]

2,394

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[4]

5,031

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]

^[4]

5,031

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[5],[7]

2,888

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Common Stock [Member]

^[5],[7]

2,888

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

April 23, 2012 [Member] | Common Stock [Member] | Digital Realty Trust, L.P. [Member]

^[6]

80,478

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[6]

$ 83,982

July 19, 2012 [Member]

Jul. 19, 2012

July 19, 2012 [Member] | Digital Realty Trust, L.P. [Member]

Sep. 28, 2012

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

Jul. 19, 2012

July 19, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]

Sep. 28, 2012

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[3]

$ 1,723

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]

^[3]

1,723

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[4]

5,031

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]

^[4]

5,031

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]

^[5]

3,023

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Common Stock [Member]

^[5]

3,023

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

July 19, 2012 [Member] | Common Stock [Member] | Digital Realty Trust, L.P. [Member]

^[6]

89,679

Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]

^[6]

$ 93,076

[1]	$1.094 annual rate of dividend per share.
[2]	Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.
[3]	$1.375 annual rate of dividend per share.
[4]	$1.750 annual rate of dividend per share.
[5]	$1.656 annual rate of dividend per share.
[6]	$2.920 annual rate of dividend per share.
[7]	Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Capital And Comprehensive Income (Schedule Of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps	$ 1,174	$ 1,293	$ 2,964	$ 4,467
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Ending balance	(24,524)		(24,524)
Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps	1,174	$ 1,293	2,964	$ 4,467
Accumulated other comprehensive loss, net, Beginning balance			(60,063)
Accumulated other comprehensive loss, net, Ending balance	(27,611)		(27,611)
Foreign Currency Translation Adjustments [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, Beginning balance			(49,298)
Foreign currency translation adjustments, Net current period change			35,053
Foreign currency translation adjustments, Ending balance	(14,245)		(14,245)
Foreign Currency Translation Adjustments [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, Beginning balance			(52,704)
Foreign currency translation adjustments, Net current period change			36,286
Foreign currency translation adjustments, Ending balance	(16,418)		(16,418)
Cash Flow Hedge Adjustments [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Beginning balance			(6,582)
Cash flow hedge adjustment, Net current period change			(6,553)
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Cash flow hedge adjustments, Ending balance	(10,279)		(10,279)
Cash Flow Hedge Adjustments [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Beginning balance			(7,363)
Cash flow hedge adjustment, Net current period change			(6,796)
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,964
Cash flow hedge adjustments, Ending balance	(11,195)		(11,195)
Accumulated Other Comprehensive Loss, Net [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Net current period change			28,500
Accumulated other comprehensive loss, net, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Ending balance	(24,524)		(24,524)
Accumulated Other Comprehensive Loss, Net [Member] \| Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance			(60,067)
Accumulated other comprehensive loss, net, Net current period change			29,490
Accumulated other comprehensive loss, net, Reclassification to interest expense from interest rate swaps			2,964
Accumulated other comprehensive loss, net, Ending balance	$ (27,613)		$ (27,613)

Incentive Plan (Narrative) (Details) - USD ($) $ in Millions	May 02, 2007	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares granted per employee	1,500,000
Maximum amount of cash paid per employee	$ 10.0
Number of shares remaining for issuance under the "Incentive Plan"		3,495,677
2004 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized and reserved for issuance under the "Incentive Plan"		4,474,102
Amended And Restated 2004 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized and reserved for issuance under the "Incentive Plan"	9,474,102
Increase in number of shares reserved for issuance	5,000,000

Incentive Plan (Long-Term Incentive Units) (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive units granted			166,080
Long-Term Incentive Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive units granted			79,237	85,910
Service conditions of the awards			The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date, provided the grantee continues employment on each anniversary date.
Vesting percentage, first and second anniversaries			20.00%
Vesting percentage, third and fourth anniversaries			30.00%
Share/unit compensation expense	$ 2.1	$ 2.2	$ 7.2	$ 6.6
Capitalized expense related to construction and leasing activities	0.4	$ 0.2	0.8	$ 0.6
Unearned compensation	$ 15.4		$ 15.4		$ 12.7
Unearned compensation, period of recognition			2 years 8 months 12 days
Service And Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive units granted			86,843	98,632
Minimum [Member] \| Long-Term Incentive Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Maximum [Member] \| Long-Term Incentive Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years

Incentive Plan (Class C Profits Interest Units) (Narrative) (Details)		3 Months Ended		9 Months Ended
	May 01, 2010 shares	Sep. 30, 2012 USD ($) shares	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($) shares	Sep. 30, 2011 USD ($)	Dec. 31, 2011 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, shares outstanding \| shares		123,261,390		123,261,390		106,039,279
Class C Profit Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards satisfying market conditions on measurement date \| shares	593,316
Vesting based on market conditions with respect to the first measurement date not achieved				Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.
Award vesting percentage, vested	60.00%
Award vesting percentage, unvested	40.00%
Award vesting, expected term	24 months
Approximate number of times simulation was run				100,000
Expected term				36 months
Expected volatility rate				23.00%
Risk-free interest rate				4.60%
Expected dividend rate				5.00%
Award limit, first market condition				$ 17,000,000
Award limit, second market condition				$ 40,000,000
Common Stock, shares outstanding \| shares		69,200,000		69,200,000
Grant date fair value of awards				$ 11,800,000
Requisite service period of share-based award				5 years
Unearned compensation		$ 0		$ 0		$ 600,000
Stock option expense		0	$ 700,000	500,000	$ 1,600,000
Capitalized expense related to construction and leasing activities		0	100,000	$ 100,000	200,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards satisfying market conditions on measurement date \| shares	20,169
Vesting based on market conditions with respect to the first measurement date not achieved				The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date.
Unearned compensation		8,800,000		$ 8,800,000		$ 5,500,000
Capitalized expense related to construction and leasing activities		$ 600,000	$ 400,000	$ 1,500,000	$ 1,100,000

Incentive Plan (Stock Options) (Narrative) (Details) - Potentially Dilutive Outstanding Stock Options [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option expense	$ 0	$ 200,000	$ 200,000	$ 700,000
Capitalized expense related to construction and leasing activities	0	$ 100,000	100,000	$ 200,000
Unearned compensation	$ 0		$ 0		$ 300,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Incentive Plan (Restricted Stock) (Narrative) (Details) - Restricted Stock [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted			45,184	41,220
Service conditions of the awards			The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date.
Vesting percentage, first and second anniversaries			20.00%
Vesting percentage, third and fourth anniversaries			30.00%
Restricted stock expense	$ 0.6	$ 0.5	$ 2.1	$ 1.5
Capitalized expense related to construction and leasing activities	0.6	$ 0.4	1.5	$ 1.1
Unearned compensation	$ 8.8		$ 8.8		$ 5.5
Unearned compensation, period of recognition			2 years 10 months 24 days
Service And Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted			52,947	50,999
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years

Incentive Plan (Summary Of Incentive Award Plan's Stock Option) (Details)	9 Months Ended
	Sep. 30, 2012 $ / shares shares
Incentive Plan [Abstract]
Options outstanding, beginning of period, Shares \| shares	337,760
Exercised, Shares \| shares	(207,550)
Cancelled / Forfeited, Shares \| shares	(301)
Options outstanding, end of period, Shares \| shares	129,909
Exercisable, end of period, Shares \| shares	129,909
Options outstanding, beginning of period, Weighted average exercise price \| $ / shares	$ 24.17
Exercised, Weighted average exercise price \| $ / shares	20.11
Cancelled / Forfeited, Weighted average exercise price \| $ / shares	41.73
Options outstanding, end of period, Weighted average exercise price \| $ / shares	30.62
Exercisable, end of period, Weighted average exercise price \| $ / shares	$ 30.62

Incentive Plan (Summary Of Stock Options Outstanding And Exercisable) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	129,909	337,760
Weighted average remaining contractual life (years), Outstanding	3 years 8 months 12 days
Weighted average exercise price, Outstanding	$ 30.62
Aggregate intrinsic value, Outstanding	$ 5,096,342
Number exercisable	129,909
Weighted average remaining contractual life (years), Exercisable	3 years 8 months 12 days
Weighted average exercise price, Exercisable	$ 30.62
Aggregate intrinsic value, Exercisable	$ 5,096,342
$12.00-13.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	34,870
Weighted average remaining contractual life (years), Outstanding	2 years 29 days
Weighted average exercise price, Outstanding	$ 12.00
Aggregate intrinsic value, Outstanding	$ 2,017,230
Number exercisable	34,870
Weighted average remaining contractual life (years), Exercisable	2 years 29 days
Weighted average exercise price, Exercisable	$ 12.00
Aggregate intrinsic value, Exercisable	$ 2,017,230
$20.37-28.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	17,000
Weighted average remaining contractual life (years), Outstanding	3 years 1 month 21 days
Weighted average exercise price, Outstanding	$ 21.28
Aggregate intrinsic value, Outstanding	$ 825,720
Number exercisable	17,000
Weighted average remaining contractual life (years), Exercisable	3 years 1 month 21 days
Weighted average exercise price, Exercisable	$ 21.28
Aggregate intrinsic value, Exercisable	$ 825,720
$33.18-41.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	78,039
Weighted average remaining contractual life (years), Outstanding	4 years 6 months 15 days
Weighted average exercise price, Outstanding	$ 40.97
Aggregate intrinsic value, Outstanding	$ 2,253,392
Number exercisable	78,039
Weighted average remaining contractual life (years), Exercisable	4 years 6 months 15 days
Weighted average exercise price, Exercisable	$ 40.97
Aggregate intrinsic value, Exercisable	$ 2,253,392
Minimum [Member] \| $12.00-13.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 12.00
Minimum [Member] \| $20.37-28.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	20.37
Minimum [Member] \| $33.18-41.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	33.18
Maximum [Member] \| $12.00-13.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	13.02
Maximum [Member] \| $20.37-28.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	28.09
Maximum [Member] \| $33.18-41.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 41.73

Derivative Instruments (Details)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2012

USD ($)

Sep. 30, 2011

USD ($)

Sep. 30, 2012

USD ($)

Sep. 30, 2011

USD ($)

Dec. 31, 2011

USD ($)

Lender accelerated indebtedness repayment threshold amount

$ 75,000

Fair value of effective cash flow hedges

9,400

$ 5,500

Ineffective portion of cash flow hedges

$ 0

Reclassified as increase to interest expense

6,300

Fair Value at Significant Other Observable Inputs (Level 2)

703,920

246,973

$ (9,358)

$ (5,484)

Termination date

January 2012

1.62

1.55

1.29

1.30

0.81

Swap 1 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[1]

$ 69,235

$ 66,563

Swap

2.980

Apr. 06, 2009

Nov. 30, 2013

$ (1,970)

(2,363)

Swap 2 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[2]

$ 13,053

13,319

Swap

3.981

May 17, 2006

Jul. 18, 2013

$ (387)

(583)

Swap 3 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[2]

$ 9,444

9,636

Swap

4.070

Jun. 23, 2006

Jul. 18, 2013

$ (287)

(435)

Swap 4 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[2]

$ 8,312

8,480

Swap

3.989

Jul. 27, 2006

Oct. 18, 2013

$ (324)

(432)

Swap 5 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[2]

39,483

Swap

3.776

Dec. 05, 2006

^[3]

Jan. 18, 2012

(41)

Swap 6 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[2]

33,946

Swap

4.000

Dec. 20, 2006

^[3]

Jan. 18, 2012

(38)

Swap 7 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[2]

$ 38,580

38,883

Swap

2.703

Dec. 03, 2009

Sep. 04, 2014

$ (1,773)

(1,592)

Swap 8 [Member]

Effective Date Description

^[4]

$ 410,905

Type of Derivative

Swap

Strike Rate

0.717

Various

Expiration Date Description

Various

Fair Value at Significant Other Observable Inputs (Level 2)

$ (4,063)

Swap 9 [Member]

Fair Value at Significant Other Observable Inputs (Level 2)

^[5]

$ 154,391

Swap

0.925

Jul. 06, 2012

^[6]

Apr. 18, 2017

$ (554)

Cap 1 [Member]

16,163

Cap

4.000

Jun. 24, 2009

^[6]

Jun. 25, 2012

Termination date

April 27, 2012

Date paid in full

Apr. 26, 2012

Cap 2 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

$ 20,500

Cap

4.000

Aug. 04, 2010

^[7]

Jun. 15, 2013

Termination date

May 9, 2012

Date paid in full

May 04, 2012

[1]	Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.
[2]	Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.
[3]	The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.
[4]	Represents the U.S. Dollar tranche of the unsecured term loan.
[5]	Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.
[6]	This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.
[7]	This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.

Fair Value Of Instruments (Estimated Fair Value And Carrying Amounts) (Details) - USD ($)
$ in Thousands

Sep. 30, 2012

Dec. 31, 2011

Estimated Fair Value [Member]

$ 10,500

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Unsecured senior notes

^[1],[2]

$ 1,923,854

1,502,271

^[1],[2]

460,347

438,327

Mortgage Loans

^[2]

850,356

1,007,615

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

10,688

Long-term Debt

4,515,864

3,234,007

Carrying Value [Member]

Unsecured senior notes

^[1],[2]

1,737,881

1,441,072

^[1],[2]

266,400

Mortgage Loans

^[2]

794,485

947,132

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

10,500

Long-term Debt

4,080,073

2,940,210

Senior Notes [Member]

Unamortized discount

12,119

8,928

Global Revolving Credit Facility [Member] | Estimated Fair Value [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Global Revolving Credit Facility [Member] | Carrying Value [Member]

^[3]

526,372

275,106

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Unsecured Term Loan [Member] | Estimated Fair Value [Member]

^[3]

526,372

$ 275,106

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Unsecured Term Loan [Member] | Carrying Value [Member]

^[4]

754,935

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]