Digital Realty Trust (DLR) 10-K 29 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2015	Feb. 23, 2016	Jun. 30, 2015
Statement [Line Items]
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Registrant Name	Digital Realty Trust, Inc.
Entity Central Index Key	1,297,996
Entity Current Reporting Status	Yes
Entity Voluntary Filer	No
Entity Well-known Seasoned Issuer	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		146,482,735
Entity Public Float			$ 9
Digital Realty Trust, L.P.
Statement [Line Items]
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Entity Registrant Name	Digital Realty Trust, L.P.
Entity Central Index Key	1,494,877
Entity Current Reporting Status	Yes
Entity Voluntary Filer	No
Entity Well-known Seasoned Issuer	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0
Entity Public Float			$ 0

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Properties:
Land	$ 689,573	$ 671,602
Acquired ground leases	12,639	12,196
Buildings and improvements	9,676,427	8,823,814
Tenant improvements	536,734	475,000
Total investments in properties	10,915,373	9,982,612
Accumulated depreciation and amortization	(2,251,268)	(1,874,054)
Net investments in properties	8,664,105	8,108,558
Investment in unconsolidated joint ventures	106,107	94,729
Net investments in real estate	8,770,212	8,203,287
Cash and cash equivalents	57,053	34,814
Accounts and other receivables, net of allowance for doubtful accounts of $5,844 and $6,302 as of December 31, 2015 and December 31, 2014, respectively	177,398	135,931
Deferred rent	403,327	447,643
Acquired above market leases, net of accumulated amortization of $89,613 and $88,072 as of December 31, 2015 and December 31, 2014, respectively	32,698	38,605
Deferred leasing costs, net of accumulated amortization of $118,376 and $99,327 as of December 31, 2015 and December 31, 2014, respectively	236,000	229,300
Goodwill	330,664	0
Acquired in-place lease value, deferred leasing costs and intangibles, net of accumulated amortization of $621,132 and $579,637	1,391,659	456,962
Deferred financing costs, net of accumulated amortization of $66,116 and $61,634 as of December 31, 2015 and December 31, 2014, respectively	35,204	30,821
Restricted cash	18,009	18,062
Assets held for sale	180,139	120,471
Other assets	54,904	40,188
Total assets	11,451,267	9,526,784
LIABILITIES AND EQUITY
Unsecured senior notes, net of discount	3,738,606	2,791,758
Mortgage loans, including premiums	303,183	378,818
Accounts payable and other accrued liabilities	608,343	605,923
Accrued dividends and distributions	126,925	115,019
Acquired below-market leases, net of accumulated amortization of $193,677 and $178,435 as of December 31, 2015 and December 31, 2014, respectively	101,114	104,235
Security deposits and prepaid rents	138,347	108,478
Obligations associated with assets held for sale	5,795	5,764
Total liabilities	$ 6,914,765	$ 5,612,546
Commitments and contingencies
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Common Stock: $0.01 par value, 215,000,000 shares authorized, 146,384,247 and 135,626,255 shares issued and outstanding as of December 31, 2015 and December 31, 2014, respectively	$ 1,456	$ 1,349
Additional paid-in capital	4,655,220	3,970,439
Accumulated dividends in excess of earnings	(1,350,089)	(1,096,607)
Accumulated other comprehensive loss, net	(96,590)	(45,046)
Total stockholders’ equity	4,500,132	3,878,256
Noncontrolling Interests:
Noncontrolling interests in operating partnership	29,612	29,191
Noncontrolling interests in consolidated joint ventures	6,758	6,791
Total noncontrolling interests	36,370	35,982
Total equity	4,536,502	3,914,238
Total liabilities and equity	11,451,267	9,526,784
Series E Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	277,172	277,172
Series F Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	176,191	176,191
Series G Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	241,468	241,468
Series H Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	353,290	353,290
Series I Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	242,014	0
Global revolving credit facility
LIABILITIES AND EQUITY
Line of credit	967,884	525,951
Unsecured term loan
LIABILITIES AND EQUITY
Line of credit	924,568	976,600
Digital Realty Trust, L.P.
Properties:
Land	689,573	671,602
Acquired ground leases	12,639	12,196
Buildings and improvements	9,676,427	8,823,814
Tenant improvements	536,734	475,000
Total investments in properties	10,915,373	9,982,612
Accumulated depreciation and amortization	(2,251,268)	(1,874,054)
Net investments in properties	8,664,105	8,108,558
Investment in unconsolidated joint ventures	106,107	94,729
Net investments in real estate	8,770,212	8,203,287
Cash and cash equivalents	57,053	34,814
Accounts and other receivables, net of allowance for doubtful accounts of $5,844 and $6,302 as of December 31, 2015 and December 31, 2014, respectively	177,398	135,931
Deferred rent	403,327	447,643
Acquired above market leases, net of accumulated amortization of $89,613 and $88,072 as of December 31, 2015 and December 31, 2014, respectively	32,698	38,605
Goodwill	330,664	0
Acquired in-place lease value, deferred leasing costs and intangibles, net of accumulated amortization of $621,132 and $579,637	1,391,659	456,962
Deferred financing costs, net of accumulated amortization of $66,116 and $61,634 as of December 31, 2015 and December 31, 2014, respectively	35,204	30,821
Restricted cash	18,009	18,062
Assets held for sale	180,139	120,471
Other assets	54,904	40,188
Total assets	11,451,267	9,526,784
LIABILITIES AND EQUITY
Unsecured senior notes, net of discount	3,738,606	2,791,758
Mortgage loans, including premiums	303,183	378,818
Accounts payable and other accrued liabilities	609,708	605,923
Accrued dividends and distributions	126,925	115,019
Acquired below-market leases, net of accumulated amortization of $193,677 and $178,435 as of December 31, 2015 and December 31, 2014, respectively	101,114	104,235
Security deposits and prepaid rents	138,347	108,478
Obligations associated with assets held for sale	5,795	5,764
Total liabilities	$ 6,916,130	$ 5,612,546
Commitments and contingencies
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Common Units: 135,626,255 and 128,455,350 units issued and outstanding as of December 31, 2014 and December 31, 2013, respectively	$ 3,305,222	$ 2,875,181
Limited partners, 1,421,314 and 1,463,814 common units, 1,032,775 and 1,170,610 profits interest units and 379,237 and 379,237 class C units outstanding as of December 31, 2015 and December 31, 2014, respectively	33,986	32,578
Accumulated other comprehensive loss, net	(100,964)	(48,433)
Total partners’ capital	4,528,379	3,907,447
Noncontrolling Interests:
Noncontrolling interests in consolidated joint ventures	6,758	6,791
Total capital	4,535,137	3,914,238
Total liabilities and equity	11,451,267	9,526,784
Digital Realty Trust, L.P. | Series E Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	277,172	277,172
Digital Realty Trust, L.P. | Series F Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	176,191	176,191
Digital Realty Trust, L.P. | Series G Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	241,468	241,468
Digital Realty Trust, L.P. | Series H Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	353,290	353,290
Digital Realty Trust, L.P. | Series I Preferred Stock and Unit
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:
Preferred Stock	242,014	0
Digital Realty Trust, L.P. | Global revolving credit facility
LIABILITIES AND EQUITY
Line of credit	967,884	525,951
Digital Realty Trust, L.P. | Unsecured term loan
LIABILITIES AND EQUITY
Line of credit	$ 924,568	$ 976,600

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts	$ 5,844	$ 6,302
Accumulated amortization, acquired in-place leases, deferred leasing costs, and other intangible assets	621,132	579,637
Accumulated amortization, deferred financing costs	66,116	61,634
Accumulated amortization, below market leases	$ 193,677	$ 178,435
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	70,000,000	70,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	215,000,000	215,000,000
Common stock, shares issued (in shares)	146,384,247	135,626,255
Common stock, shares outstanding (in shares)	146,384,247	135,626,255
Acquired above market leases:
Accumulated amortization	$ 89,613	$ 88,072
Series E Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 287,500	$ 287,500
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred stock, shares issued (in shares)	11,500,000	11,500,000
Preferred stock, shares outstanding (in shares)	11,500,000	11,500,000
Series F Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 182,500	$ 182,500
Preferred Stock, dividend rate	6.625%	6.625%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred stock, shares issued (in shares)	7,300,000	7,300,000
Preferred stock, shares outstanding (in shares)	7,300,000	7,300,000
Series G Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 250,000	$ 250,000
Preferred Stock, dividend rate	5.875%	5.875%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred stock, shares issued (in shares)	10,000,000	10,000,000
Preferred stock, shares outstanding (in shares)	10,000,000	10,000,000
Series H Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 365,000	$ 365,000
Preferred Stock, dividend rate	7.375%	7.375%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred stock, shares issued (in shares)	14,600,000	14,600,000
Preferred stock, shares outstanding (in shares)	14,600,000	14,600,000
Series I Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 250,000	$ 0
Preferred Stock, dividend rate	6.35%	0.00%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 0
Preferred stock, shares issued (in shares)	10,000,000	0
Preferred stock, shares outstanding (in shares)	10,000,000	0
Digital Realty Trust, L.P.
Allowance for doubtful accounts	$ 5,844	$ 6,302
Deferred Costs, Leasing, Accumulated Amortization	621,132	579,637
Accumulated amortization, deferred financing costs	66,116	61,634
Accumulated amortization, below market leases	$ 193,677	$ 178,435
Limited Partners, common units	1,421,314	1,463,814
Limited Partners, profits interest units	1,032,775	1,170,610
Limited Partners, Class C units outstanding	379,237	379,237
Common Units, issued	146,384,247	135,626,255
Common Units, outstanding	146,384,247	135,626,255
Digital Realty Trust, L.P. | Acquired above market leases:
Accumulated amortization	$ 89,613	$ 88,072
Digital Realty Trust, L.P. | Series E Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 287,500	$ 287,500
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred units, issued (in shares)	11,500,000	11,500,000
Preferred Units, Outstanding	11,500,000	11,500,000
Digital Realty Trust, L.P. | Series F Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 182,500	$ 182,500
Preferred Stock, dividend rate	6.625%	6.625%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred units, issued (in shares)	7,300,000	7,300,000
Preferred Units, Outstanding	7,300,000	7,300,000
Digital Realty Trust, L.P. | Series G Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 250,000	$ 250,000
Preferred Stock, dividend rate	5.875%	5.875%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred units, issued (in shares)	10,000,000	10,000,000
Preferred Units, Outstanding	10,000,000	10,000,000
Digital Realty Trust, L.P. | Series H Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 365,000	$ 365,000
Preferred Stock, dividend rate	7.375%	7.375%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25
Preferred units, issued (in shares)	14,600,000	14,600,000
Preferred Units, Outstanding	14,600,000	14,600,000
Digital Realty Trust, L.P. | Series I Preferred Stock and Unit
Preferred Stock, liquidation preference value	$ 250,000	$ 0
Preferred Stock, dividend rate	6.35%	0.00%
Preferred Stock, liquidation preference per share/unit	$ 25	$ 0
Preferred units, issued (in shares)	10,000,000	0
Preferred Units, Outstanding	10,000,000	0

Consolidated Income Statements

Consolidated Income Statements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Revenues:
Rental	$ 1,354,986	$ 1,256,086	$ 1,155,051
Tenant reimbursements	359,875	350,234	323,286
Interconnection and other	40,759	0	0
Fee income	6,638	7,268	3,520
Other	1,078	2,850	402
Total operating revenues	1,763,336	1,616,438	1,482,259
Operating Expenses:
Rental property operating and maintenance	549,885	503,140	456,596
Property taxes	92,588	91,538	90,321
Insurance	8,809	8,643	8,743
Change in fair value of contingent consideration	(44,276)	(8,093)	(1,762)
Depreciation and amortization	570,527	538,513	475,464
General and administrative	105,549	93,188	65,653
Transaction expenses	17,400	1,303	4,605
Impairment of investments in real estate	0	126,470	0
Other	60,943	3,070	827
Total operating expenses	1,361,425	1,357,772	1,100,447
Operating income	401,911	258,666	381,812
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	15,491	13,289	9,796
Gain on insurance settlement	0	0	5,597
Gain on sale of property	94,604	15,945	0
Gain on contribution of properties to unconsolidated joint ventures	0	95,404	115,609
Gain on sale of equity investment	0	14,551	0
Interest and other income	(2,381)	2,663	139
Interest expense	(201,435)	(191,085)	(189,399)
Tax expense	(6,451)	(5,238)	(1,292)
Loss from early extinguishment of debt	(148)	(780)	(1,813)
Net income	301,591	203,415	320,449
Net income attributable to noncontrolling interests	(4,902)	(3,232)	(5,961)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	296,689	200,183	314,488
Dividends declared on preferred stock	(79,423)	(67,465)	(42,905)
Net income available to common stockholders/unitholders	$ 217,266	$ 132,718	$ 271,583
Net income per share/unit available to common stockholders/unitholders:
Basic (in dollars per share)	$ 1.57	$ 1	$ 2.12
Diluted (in dollars per share)	$ 1.56	$ 0.99	$ 2.12
Weighted average common shares/units outstanding:
Basic (in shares)	138,247,606	133,369,047	127,941,134
Diluted (in shares)	138,865,421	133,637,235	128,127,641
Digital Realty Trust, L.P.
Operating Revenues:
Rental	$ 1,354,986	$ 1,256,086	$ 1,155,051
Tenant reimbursements	359,875	350,234	323,286
Interconnection and other	40,759	0	0
Fee income	6,638	7,268	3,520
Other	1,078	2,850	402
Total operating revenues	1,763,336	1,616,438	1,482,259
Operating Expenses:
Rental property operating and maintenance	549,885	503,140	456,596
Property taxes	92,588	91,538	90,321
Insurance	8,809	8,643	8,743
Change in fair value of contingent consideration	(44,276)	(8,093)	(1,762)
Depreciation and amortization	570,527	538,513	475,464
General and administrative	105,549	93,188	65,653
Transaction expenses	17,400	1,303	4,605
Impairment of investments in real estate	0	126,470	0
Other	60,943	3,070	827
Total operating expenses	1,361,425	1,357,772	1,100,447
Operating income	401,911	258,666	381,812
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	15,491	13,289	9,796
Gain on insurance settlement	0	0	5,597
Gain on sale of property	94,604	15,945	0
Gain on contribution of properties to unconsolidated joint ventures	0	95,404	115,609
Gain on sale of equity investment	0	14,551	0
Interest and other income	(2,381)	2,663	139
Interest expense	(202,800)	(191,085)	(189,399)
Tax expense	(6,451)	(5,238)	(1,292)
Loss from early extinguishment of debt	(148)	(780)	(1,813)
Net income	300,226	203,415	320,449
Net loss attributable to noncontrolling interests in consolidated joint ventures	(460)	(465)	(595)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	299,766	202,950	319,854
Dividends declared on preferred stock	(79,423)	(67,465)	(42,905)
Net income available to common stockholders/unitholders	$ 220,343	$ 135,485	$ 276,949
Net income per share/unit available to common stockholders/unitholders:
Basic (in dollars per share)	$ 1.56	$ 1	$ 2.12
Diluted (in dollars per share)	$ 1.55	$ 0.99	$ 2.12
Weighted average common shares/units outstanding:
Basic (in shares)	140,905,897	136,122,661	130,462,534
Diluted (in shares)	141,523,712	136,390,849	130,649,041

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income	$ 301,591	$ 203,415	$ 320,449
Other comprehensive income (loss):
Foreign currency translation adjustments	(51,745)	(52,373)	14,636
Increase (decrease) in fair value of interest rate swaps	(3,407)	(7,936)	2,473
Reclassification to interest expense from interest rate swaps	2,621	3,419	6,258
Comprehensive income	249,060	146,525	343,816
Comprehensive income attributable to noncontrolling interests	(3,915)	(2,079)	(6,446)
Comprehensive income attributable to Digital Realty Trust, Inc.	245,145	144,446	337,370
Digital Realty Trust, L.P.
Net income	300,226	203,415	320,449
Other comprehensive income (loss):
Foreign currency translation adjustments	(51,745)	(52,373)	14,636
Increase (decrease) in fair value of interest rate swaps	(3,407)	(7,936)	2,473
Reclassification to interest expense from interest rate swaps	2,621	3,419	6,258
Comprehensive income	$ 247,695	$ 146,525	$ 343,816

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common stock	Additional Paid-in Capital	Accumulated Dividends in Excess of Earnings	Accumulated Other Comprehensive Income (Loss), net	Total Stockholders’ Equity	Noncontrolling Interests in Operating Partnership	Noncontrolling Interests in Consolidated Joint Ventures	Total Noncontrolling Interests
Balance at Dec. 31, 2012	$ 3,498,384	$ 572,711	$ 1,247	$ 3,562,642	$ (656,104)	$ (12,191)	$ 3,468,305	$ 24,135	$ 5,944	$ 30,079
Balance (shares) at Dec. 31, 2012			125,140,783
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of common units to common stock			$ 1	630			631	(631)		(631)
Conversion of units to common stock (shares)			57,138
Issuance of restricted stock, net of forfeitures (shares)			112,245
Net proceeds from sale of common stock	(504)			(504)			(504)
Exercise of stock options	230			230			230
Exercise of stock options (shares)			5,569
Issuance of preferred stock, net of offering costs	241,468	241,468					241,468
Conversion of preferred stock (shares)			3,139,615
Conversion of preferred stock		(119,348)	$ 31	119,317
Amortization of unearned compensation on share-based awards	15,621			15,621			15,621
Reclassification of vested share-based awards				(8,999)			(8,999)	8,999		8,999
Dividends declared on preferred stock	(42,905)				(42,905)		(42,905)
Dividends and distributions on common stock and common and incentive units	(410,028)				(400,701)		(400,701)	(9,327)		(9,327)
Contributions from noncontrolling interests in consolidated joint ventures	430								430	430
Net income	320,449				314,488		314,488	5,366	595	5,961
Other comprehensive income— foreign currency translation adjustments	14,636					14,321	14,321	315		315
Other comprehensive income— fair value of interest rate swaps	2,473					2,423	2,423	50		50
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	6,258					6,138	6,138	120		120
Balance (shares) at Dec. 31, 2013			128,455,350
Balance at Dec. 31, 2013	3,646,512	694,831	$ 1,279	3,688,937	(785,222)	10,691	3,610,516	29,027	6,969	35,996
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of common units to common stock			$ 1	1,654			1,655	(1,655)		(1,655)
Conversion of units to common stock (shares)			134,073
Issuance of restricted stock, net of forfeitures (shares)			124,163
Common stock offering costs	(625)			(625)			(625)
Exercise of stock options	711			711			711
Exercise of stock options (shares)			42,757
Issuance of common stock in exchange for cash and debentures (shares/units)			6,869,912
Issuance of common stock in exchange for cash	266,400		$ 69	266,331			266,400
Conversion of preferred stock	353,290	353,290					353,290
Amortization of unearned compensation on share-based awards	23,737			23,737			23,737
Reclassification of vested share-based awards				(10,306)			(10,306)	10,306		10,306
Dividends declared on preferred stock	(67,465)				(67,465)		(67,465)
Dividends and distributions on common stock and common and incentive units	(454,204)				(444,103)		(444,103)	(10,101)		(10,101)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	(643)								(643)	(643)
Net income	203,415				200,183		200,183	2,767	465	3,232
Other comprehensive income— foreign currency translation adjustments	(52,373)					(51,312)	(51,312)	(1,061)		(1,061)
Other comprehensive income— fair value of interest rate swaps	(7,936)					(7,775)	(7,775)	(161)		(161)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	3,419					3,350	3,350	69		69
Balance (shares) at Dec. 31, 2014			135,626,255
Balance at Dec. 31, 2014	3,914,238	1,048,121	$ 1,349	3,970,439	(1,096,607)	(45,046)	3,878,256	29,191	6,791	35,982
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of common units to common stock			$ 2	1,841			1,843	(1,843)		(1,843)
Conversion of units to common stock (shares)			156,008
Issuance of restricted stock, net of forfeitures (shares)			72,673
Common stock offering costs	799			799			799
Exercise of stock options	$ 896			896			896
Exercise of stock options (shares)	29,311		29,311
Issuance of common stock in exchange for cash and debentures (shares/units)			10,500,000
Issuance of common stock in exchange for cash	$ 675,577		$ 105	675,472			675,577
Issuance of preferred stock, net of offering costs	242,014	242,014					242,014
Amortization of unearned compensation on share-based awards	14,375			14,375			14,375
Reclassification of vested share-based awards				(8,602)			(8,602)	8,602		8,602
Dividends declared on preferred stock	(79,423)				(79,423)		(79,423)
Dividends and distributions on common stock and common and incentive units	(480,541)				(470,748)		(470,748)	(9,793)		(9,793)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	(493)								(493)	(493)
Net income	301,591				296,689		296,689	4,442	460	4,902
Other comprehensive income— foreign currency translation adjustments	(51,745)					(50,775)	(50,775)	(970)		(970)
Other comprehensive income— fair value of interest rate swaps	(3,407)					(3,338)	(3,338)	(69)		(69)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	2,621					2,569	2,569	52		52
Balance (shares) at Dec. 31, 2015			146,384,247
Balance at Dec. 31, 2015	$ 4,536,502	$ 1,290,135	$ 1,456	$ 4,655,220	$ (1,350,089)	$ (96,590)	$ 4,500,132	$ 29,612	$ 6,758	$ 36,370

Consolidated Statements of Capi

Consolidated Statements of Capital - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (units)		135,626,255			135,626,255
Conversion of limited partner common units to general partner common units					$ 1,843	$ 1,655	$ 631
Common unit offering costs					799	(625)
Issuance of common stock in exchange for cash					675,577	266,400
Net proceeds from issuance of preferred units							(504)
Conversion of preferred units						353,290
Amortization of unearned compensation on share-based awards					14,375	23,737	15,621
Contributions from noncontrolling interests in consolidated joint ventures							430
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions					(493)	(643)
Net income	$ (16,573)	$ 122,325	$ (34,795)	$ 46,717	301,591	203,415	320,449
Other comprehensive income— foreign currency translation adjustments					(51,745)	(52,373)	14,636
Other comprehensive income— fair value of interest rate swaps					(3,407)	(7,936)	2,473
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense					$ 2,621	$ 3,419	6,258
Balance (units)	146,384,247		135,626,255		146,384,247	135,626,255
Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance		3,914,238		3,646,512	$ 3,914,238	$ 3,646,512	3,498,384
Common unit offering costs					799	(625)	(504)
Issuance of common units in connection with the exercise of stock options					896	711	230
Issuance of common stock in exchange for cash					675,577	266,400
Net proceeds from issuance of preferred units					242,014	353,290	241,468
Conversion of preferred units							0
Amortization of unearned compensation on share-based awards					14,375	23,737	15,621
Distributions					(559,964)	(521,669)	(452,933)
Contributions from noncontrolling interests in consolidated joint ventures							430
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions					(493)	(643)
Net income	$ (16,785)	122,325	$ (34,795)	46,717	300,226	203,415	320,449
Other comprehensive income— foreign currency translation adjustments					(51,745)	(52,373)	14,636
Other comprehensive income— fair value of interest rate swaps					(3,407)	(7,936)	2,473
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense					2,621	3,419	6,258
Balance	4,535,137		3,914,238		4,535,137	3,914,238	3,646,512
Accumulated Other Comprehensive Income (Loss), net | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance		(48,433)		8,457	(48,433)	8,457	(14,910)
Other comprehensive income— foreign currency translation adjustments					(51,745)	(52,373)	14,636
Other comprehensive income— fair value of interest rate swaps					(3,407)	(7,936)	2,473
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense					2,621	3,419	6,258
Balance	(100,964)		(48,433)		(100,964)	(48,433)	8,457
Noncontrolling Interests in Consolidated Joint Ventures | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance		6,791		6,969	6,791	6,969	5,944
Contributions from noncontrolling interests in consolidated joint ventures							430
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions					(493)	(643)
Net income					460	465	595
Balance	$ 6,758		$ 6,791		6,758	6,791	6,969
General Partner | Preferred Units | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance		$ 1,048,121		$ 694,831	$ 1,048,121	$ 694,831	$ 572,711
Balance (units)		43,400,000		28,800,000	43,400,000	28,800,000	23,736,505
Net proceeds from issuance of preferred units					$ 242,014	$ 353,290	$ 241,468
Net proceeds from issuance of preferred units (units)					10,000,000	14,600,000	10,000,000
Conversion of preferred units							$ (119,348)
Conversion of preferred units (units)							(4,936,505)
Distributions					$ (79,423)	$ (67,465)	$ (42,905)
Net income					$ 79,423	$ 67,465	$ 42,905
Balance (units)	53,400,000		43,400,000		53,400,000	43,400,000	28,800,000
Balance	$ 1,290,135		$ 1,048,121		$ 1,290,135	$ 1,048,121	$ 694,831
General Partner | Common Units | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance		$ 2,875,181		$ 2,904,994	$ 2,875,181	$ 2,904,994	$ 2,907,785
Balance (units)		135,626,255		128,455,350	135,626,255	128,455,350	125,140,783
Conversion of limited partner common units to general partner common units					$ 1,843	$ 1,655	$ 631
Conversion of limited partner common units to general partner common units (units)					156,008	134,073	57,138
Issuance of restricted common units, net of forfeitures (units)					72,673	124,163	112,245
Common unit offering costs					$ 799	$ (625)	$ (504)
Issuance of common units in connection with the exercise of stock options					$ 896	$ 711	$ 230
Issuance of common units in connection with the exercise of stock options (units)					29,311	42,757	5,569
Issuance of common stock in exchange for cash					$ 675,577	$ 266,400
Issuance of common stock in exchange for cash and debentures (shares/units)					10,500,000	6,869,912
Conversion of preferred units							$ 119,348
Conversion of preferred units (units)							3,139,615
Amortization of unearned compensation on share-based awards					$ 14,375	$ 23,737	$ 15,621
Reclassification of vested share based awards					(8,602)	(10,306)	(8,999)
Distributions					(470,748)	(444,103)	(400,701)
Net income					$ 215,901	$ 132,718	$ 271,583
Balance (units)	146,384,247		135,626,255		146,384,247	135,626,255	128,455,350
Balance	$ 3,305,222		$ 2,875,181		$ 3,305,222	$ 2,875,181	$ 2,904,994
Limited Partners | Common Units | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance		$ 32,578		$ 31,261	$ 32,578	$ 31,261	$ 26,854
Balance (units)		3,013,661		2,967,021	3,013,661	2,967,021	2,851,400
Conversion of limited partner common units to general partner common units					$ (1,843)	$ (1,655)	$ (631)
Conversion of limited partner common units to general partner common units (units)					(156,008)	(134,073)	(57,138)
Issuance of common units, net of forfeitures (units)					(24,327)	180,713	172,759
Reclassification of vested share based awards					$ 8,602	$ 10,306	$ 8,999
Distributions					(9,793)	(10,101)	(9,327)
Net income					$ 4,442	$ 2,767	$ 5,366
Balance (units)	2,833,326		3,013,661		2,833,326	3,013,661	2,967,021
Balance	$ 33,986		$ 32,578		$ 33,986	$ 32,578	$ 31,261

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 301,591	$ 203,415	$ 320,449
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of property	(94,604)	(15,945)	0
Gain on insurance settlement	0	0	(5,597)
Gain on contribution of investment properties to unconsolidated joint venture	0	(95,404)	(115,609)
Gain on sale of investment	0	(14,551)	0
Impairment of investments in real estate	0	126,470	0
Equity in earnings of unconsolidated joint ventures	(15,491)	(13,289)	(9,796)
Change in fair value of contingent consideration	(44,276)	(8,093)	(1,762)
Distributions from unconsolidated joint ventures	14,947	9,684	30,358
Write-off of net assets due to early lease terminations	75,263	2,692	60
Gain (Loss) on Contract Termination	(14,355)	0	0
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	464,694	456,204	397,592
Amortization of share-based unearned compensation	6,360	18,019	11,527
Allowance for (recovery of) doubtful accounts	(458)	726	1,967
Amortization of deferred financing costs	8,481	8,969	10,658
Write-off of deferred financing costs, included in loss on early extinguishment of debt	148	780	1,813
Amortization of debt discount/premium	2,032	1,837	875
Amortization of acquired in place lease value and deferred leasing costs	105,833	82,310	77,872
Amortization of acquired above market leases and acquired below market leases	(9,336)	(9,983)	(11,719)
Changes in assets and liabilities, net of impact of acquisition of Telx Holdings, Inc.
Restricted cash	2,392	13,523	4,850
Accounts and other receivables	(10,127)	(11,426)	(527)
Deferred rent	(48,404)	(77,483)	(83,541)
Deferred leasing costs	(11,688)	(32,068)	(16,409)
Other assets	(2,928)	(11,675)	(3,530)
Accounts payable and other accrued liabilities	36,113	24,775	34,127
Security deposits and prepaid rents	33,045	(3,599)	12,732
Net cash provided by operating activities	799,232	655,888	656,390
Cash flows from investing activities:
Telx Acquisition, net of cash acquired	(1,850,061)	0	0
Acquisitions of real estate	(99,247)	(24,305)	(170,322)
Proceeds from sale of assets, net of sales costs	185,565	37,945	11,015
Proceeds from contribution of investment properties to unconsolidated joint venture	0	178,933	328,569
Proceeds from sale of investment	0	31,635	0
Investment in unconsolidated joint ventures	(10,797)	(20,627)	(24,452)
Investment in equity securities	0	0	(17,100)
Deposits paid for acquisitions of real estate	0	0	0
Receipt of value added tax refund	17,570	18,992	11,277
Refundable value added tax paid	(30,322)	(29,585)	(15,785)
Change in restricted cash	1,479	14,899	(1,507)
Improvements to and advances for investments in real estate	(737,180)	(852,386)	(1,189,510)
Improvement advances to tenants	(40,553)	(20,059)	(7,270)
Collection of advances from tenants for improvements	37,524	20,378	5,851
Proceeds from insurance settlement	0	0	8,625
Net cash used in investing activities	(2,526,022)	(644,180)	(1,060,609)
Cash flows from financing activities:
Borrowings on revolving credit facility	2,436,032	1,124,608	1,806,832
Repayments on revolving credit facility	(1,958,025)	(1,297,785)	(1,781,435)
Borrowings on unsecured term loan	0	0	264,690
Principal payments on unsecured notes	(374,927)	0	(33,000)
Borrowings on unsecured senior notes	1,445,127	495,872	630,026
Repayments on other secured loans	(67,000)	0	0
Principal payments on mortgage loans	(75,492)	(177,882)	(236,619)
Earnout payments related to acquisitions	(12,985)	(11,011)	(25,783)
Change in restricted cash	(1,502)	510	(2,274)
Payment of loan fees and costs	(13,488)	(4,860)	(18,371)
Capital (distributions to) contributions received from noncontrolling interests in consolidated joint ventures	(493)	(643)	430
Gross proceeds from the issuance of common stock	675,577	0	0
Gross proceeds from the issuance of preferred stock	250,000	365,000	250,000
Common stock offering costs paid	799	(625)	(504)
Preferred stock offering costs paid	(7,432)	(11,710)	(8,532)
Proceeds from exercise of stock options	896	711	230
Payment of distributions to preferred unitholders	(79,423)	(67,465)	(42,905)
Payment of distributions to common unitholders	(468,635)	(441,694)	(400,953)
Net cash provided by (used in) financing activities	1,749,029	(26,974)	401,832
Net increase (decrease) in cash and cash equivalents	22,239	(15,266)	(2,387)
Cash and cash equivalents at beginning of period	34,814	50,080	52,467
Cash and cash equivalents at end of period	57,053	34,814	50,080
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	192,992	200,829	192,754
Cash paid for income taxes	3,122	3,099	2,461
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	(51,745)	(52,373)	14,636
Accrual of dividends and distributions	126,925	115,019	102,509
(Decrease) increase in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	(3,407)	(7,936)	2,473
Acquisition measurement period adjustment included in accounts payable and other accrued liabilities	0	0	22,393
Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock	1,843	1,655	631
Preferred stock/units converted to shares of common stock/units	0	0	119,348
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	109,394	153,080	216,520
Additional accrual of contingent purchase price for investments in real estate	0	0	6,356
Accrual for potential earnout contingency	19,364	12,338	0
Issuance of common units associated with exchange of exchangeable senior debentures	0	261,166	0
Capital Lease Obligations Incurred	63,962	0	0
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	99,247	24,305	183,119
Acquired above market leases	0	0	203
Acquired below market leases	0	0	(5,781)
Acquired in place lease value and deferred leasing costs	0	0	20,811
Mortgage loan assumed, net of premium	0	0	(28,030)
Cash paid for acquisition of real estate	99,247	24,305	170,322
Digital Realty Trust, L.P.
Cash flows from operating activities:
Net income	300,226	203,415	320,449
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of property	(94,604)	(15,945)	0
Gain on insurance settlement	0	0	(5,597)
Gain on contribution of investment properties to unconsolidated joint venture	0	(95,404)	(115,609)
Gain on sale of investment	0	(14,551)	0
Impairment of investments in real estate	0	126,470	0
Equity in earnings of unconsolidated joint ventures	(15,491)	(13,289)	(9,796)
Change in fair value of contingent consideration	(44,276)	(8,093)	(1,762)
Distributions from unconsolidated joint ventures	14,947	9,684	30,358
Write-off of net assets due to early lease terminations	75,263	2,692	60
Gain (Loss) on Contract Termination	(14,355)	0	0
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	464,694	456,204	397,592
Amortization of share-based unearned compensation	6,360	18,019	11,527
Allowance for (recovery of) doubtful accounts	(458)	726	1,967
Amortization of deferred financing costs	8,481	8,969	10,658
Write-off of deferred financing costs, included in loss on early extinguishment of debt	148	780	1,813
Amortization of debt discount/premium	2,032	1,837	875
Amortization of acquired in place lease value and deferred leasing costs	105,833	82,310	77,872
Amortization of acquired above market leases and acquired below market leases	(9,336)	(9,983)	(11,719)
Changes in assets and liabilities, net of impact of acquisition of Telx Holdings, Inc.
Restricted cash	2,392	13,523	4,850
Accounts and other receivables	(10,127)	(11,426)	(527)
Deferred rent	(48,404)	(77,483)	(83,541)
Deferred leasing costs	(11,688)	(32,068)	(16,409)
Other assets	(2,928)	(11,675)	(3,530)
Accounts payable and other accrued liabilities	37,478	24,775	34,127
Security deposits and prepaid rents	33,045	(3,599)	12,732
Net cash provided by operating activities	799,232	655,888	656,390
Cash flows from investing activities:
Telx Acquisition, net of cash acquired	(1,850,061)	0	0
Acquisitions of real estate	(99,247)	(24,305)	(170,322)
Proceeds from sale of assets, net of sales costs	185,565	37,945	11,015
Proceeds from contribution of investment properties to unconsolidated joint venture	0	178,933	328,569
Proceeds from sale of investment	0	31,635	0
Investment in unconsolidated joint ventures	(10,797)	(20,627)	(24,452)
Investment in equity securities	0	0	(17,100)
Receipt of value added tax refund	17,570	18,992	11,277
Refundable value added tax paid	(30,322)	(29,585)	(15,785)
Change in restricted cash	1,479	14,899	(1,507)
Improvements to and advances for investments in real estate	(737,180)	(852,386)	(1,189,510)
Improvement advances to tenants	(40,553)	(20,059)	(7,270)
Collection of advances from tenants for improvements	37,524	20,378	5,851
Proceeds from insurance settlement	0	0	8,625
Net cash used in investing activities	(2,526,022)	(644,180)	(1,060,609)
Cash flows from financing activities:
Borrowings on revolving credit facility	2,436,032	1,124,608	1,806,832
Repayments on revolving credit facility	(1,958,025)	(1,297,785)	(1,781,435)
Borrowings on unsecured term loan	0	0	264,690
Principal payments on unsecured notes	(374,927)	0	(33,000)
Borrowings on unsecured senior notes	1,445,127	495,872	630,026
Repayments on other secured loans	(67,000)	0	0
Principal payments on mortgage loans	(75,492)	(177,882)	(236,619)
Earnout payments related to acquisitions	(12,985)	(11,011)	(25,783)
Change in restricted cash	(1,502)	510	(2,274)
Payment of loan fees and costs	(13,488)	(4,860)	(18,371)
Capital (distributions to) contributions received from noncontrolling interests in consolidated joint ventures	(493)	(643)	430
General partner contributions	919,840	353,376	241,194
Payment of distributions to preferred unitholders	(79,423)	(67,465)	(42,905)
Payment of distributions to common unitholders	(468,635)	(441,694)	(400,953)
Net cash provided by (used in) financing activities	1,749,029	(26,974)	401,832
Net increase (decrease) in cash and cash equivalents	22,239	(15,266)	(2,387)
Cash and cash equivalents at beginning of period	34,814	50,080	52,467
Cash and cash equivalents at end of period	57,053	34,814	50,080
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	192,992	200,829	192,754
Cash paid for income taxes	3,122	3,099	2,461
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	(51,745)	(52,373)	14,636
Accrual of dividends and distributions	126,925	115,019	102,509
(Decrease) increase in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	(3,407)	(7,936)	2,473
Acquisition measurement period adjustment included in accounts payable and other accrued liabilities	0	0	22,393
Preferred stock/units converted to shares of common stock/units	0	0	119,348
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	109,394	153,080	216,520
Additional accrual of contingent purchase price for investments in real estate	0	0	6,356
Accrual for potential earnout contingency	19,364	12,338	0
Issuance of common units associated with exchange of exchangeable senior debentures	0	261,166	0
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	99,247	24,305	183,119
Acquired above market leases	0	0	203
Acquired below market leases	0	0	(5,781)
Acquired in place lease value and deferred leasing costs	0	0	20,811
Mortgage loan assumed, net of premium	0	0	(28,030)
Cash paid for acquisition of real estate	$ 99,247	$ 24,305	$ 170,322

Organization and Description of

Organization and Description of Business	12 Months Ended
	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	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 and managing technology-related real estate. The Company is focused on providing data center and colocation solutions for domestic and international tenants across a variety of industry verticals ranging from financial services, cloud and information technology services, to manufacturing, energy, healthcare, and consumer products. As of December 31, 2015 , our portfolio consisted of 139 operating properties, including eight Telx properties (of which two properties are owned and six properties are leased from third parties) and 14 properties held as investments in unconsolidated joint ventures, of which 110 are located throughout North America, 23 are located in Europe, three are located in Australia and three are located in Asia. We are diversified in major metropolitan areas where corporate data center and technology tenants are concentrated, including the Atlanta, Boston, Chicago, Dallas, Los Angeles, New York, Northern Virginia, Phoenix, San Francisco, Seattle and Silicon Valley metropolitan areas in the United States, the Amsterdam, Dublin, Frankfurt (land only), London and Paris metropolitan areas in Europe and the Singapore, Sydney, Melbourne, Hong Kong and Osaka (land only) metropolitan areas in the Asia Pacific region. The portfolio consists of Internet gateway and corporate data center properties, technology manufacturing properties and technology office properties. 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 December 31, 2015 , Digital Realty Trust, Inc. owns a 98.1% common interest and a 100.0% preferred interest in the Operating Partnership. As sole general partner of the Operating Partnership, Digital Realty Trust, Inc. has the full, exclusive and complete responsibility for the Operating Partnership’s day-to-day management and control. 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. On October 9, 2015, we completed the acquisition of Telx Holdings, Inc. ("Telx") from private equity firms ABRY Partners and Berkshire Partners. See Note 3 "Investments in Real Estate" for further discussion of the acquisition.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies (a) Principles of Consolidation and Basis of Presentation The accompanying 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 notes to the 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 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. generally does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public securities from time to time and guaranteeing certain unsecured debt of the Operating Partnership and certain of its subsidiaries and affiliates. Digital Realty Trust, Inc. itself has not issued any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries and affiliates, 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 or loaned to Digital Realty Trust, L.P. on a temporary basis prior to contribution in exchange for partnership units, the Operating Partnership generally generates the capital required by the Company’s business primarily through the Operating Partnership’s operations, by the Operating Partnership’s or its affiliates’ direct or indirect incurrence of indebtedness or through the issuance of partnership units. The presentation of noncontrolling interests in operating partnership, stockholders’ equity and partners’ capital are the main areas of difference between the 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 consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s 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 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 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 consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership: • consolidated face financial statements; and • the following notes to the consolidated financial statements: • Debt of the Company and Debt of the Operating Partnership; • Income per Share and Income per Unit; • Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Accumulated Other Comprehensive Income (Loss) of the Operating Partnership; and • Quarterly Financial Information. 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 generally operates the business through the Operating Partnership. (b) Cash Equivalents For the purpose of the consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of December 31, 2015 and 2014 , cash equivalents consist of investments in money market instruments. (c) Investments in Real Estate Investments in real estate are stated at cost, less accumulated depreciation and amortization. Land is not depreciated. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives as follows: Acquired ground leases Terms of the related lease Buildings and improvements 5-39 years Machinery and equipment 7-15 years Furniture and fixtures 3-5 years Leasehold improvements Shorter of the estimated useful lives or the terms of the related leases Tenant improvements Shorter of the estimated useful lives or the terms of the related leases Improvements and replacements are capitalized when they extend the useful life, increase capacity, or improve the efficiency of the asset. Repairs and maintenance are charged to expense as incurred. Assets that are classified as held for sale are recorded at the lower of their carrying value or fair value less costs to dispose. We classify an asset as held for sale once management has the authority to approve and commits to a plan to sell, the asset is available for immediate sale, an active program to locate a buyer has commenced and the sale of the asset is probable and transfer of the asset is expected to occur within one year. Upon the classification of assets as held for sale or sold, the depreciation and amortization of the assets will cease. (d) Investment in Unconsolidated Joint Ventures The Company’s investment in unconsolidated joint ventures is accounted for using the equity method, whereby the investment is increased for capital contributed and our share of the joint ventures’ net income and decreased by distributions we receive and our share of any losses of the joint ventures. We amortize the difference between the cost of our investments in unconsolidated joint ventures and the book value of the underlying equity into equity in earnings from unconsolidated affiliates on a straight-line basis consistent with the lives of the underlying assets. (e) Impairment of Long-Lived Assets We review each of our properties for indicators that its carrying amount may not be recoverable. Examples of such indicators may include a significant decrease in the market price of the property, a change in the expected holding period for the property, a significant adverse change in how the property is being used or expected to be used based on the underwriting at the time of acquisition, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of the property, or a history of operating or cash flow losses of the property. When such impairment indicators exist, we review an estimate of the future undiscounted net cash flows (excluding interest charges) expected to result from the real estate investment’s use and eventual disposition and compare that estimate to the carrying value of the property. We consider factors such as future operating income, trends and prospects, as well as the effects of leasing demand, competition and other factors. If our future undiscounted net cash flow evaluation indicates that we are unable to recover the carrying value of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. These losses have a direct impact on our net income because recording an impairment loss results in an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results in future periods. Since cash flows on properties considered to be long-lived assets to be held and used are considered on an undiscounted basis to determine whether the carrying value of a property is recoverable, our strategy of holding properties over the long-term directly decreases the likelihood of their carrying values not being recoverable and therefore requiring the recording of an impairment loss. If our strategy changes or market conditions otherwise dictate an earlier sale date, an impairment loss may be recognized and such loss could be material. If we determine that the asset fails the recoverability test, the affected assets must be reduced to their fair value. We generally estimate the fair value of rental properties utilizing a discounted cash flow analysis that includes projections of future revenues, expenses and capital improvement costs that a market participant would use based on the highest and best use of the asset, which is similar to the income approach that is commonly utilized by appraisers. In certain cases, we may supplement this analysis by obtaining outside broker opinions of value. In considering whether to classify a property as held for sale, the Company considers whether: (i) management has committed to a plan to sell the property; (ii) the property is available for immediate sale in its present condition; (iii) the Company has initiated a program to locate a buyer; (iv) the Company believes that the sale of the property is probable; (v) the Company is actively marketing the property for sale at a price that is reasonable in relation to its current value; and (vi) actions required for the Company to complete the plan indicate that it is unlikely that any significant changes will made to the plan. If all the above criteria are met, the Company classifies the property as held for sale. Upon being classified as held for sale, the Company ceases all depreciation and amortization related to the property and it is recorded at the lower of its carrying amount or fair value less cost to sell. The assets and related liabilities of the property are classified separately on the consolidated balance sheets for the most recent reporting period. Only those assets held for sale that constitute a strategic shift or that will have a major effect on our operations are classified as discontinued operations. To date we have had no property dispositions or assets classified as held for sale that would meet the definition of discontinued operations. (f) Purchase Accounting for Acquisition of Investments in Real Estate Purchase accounting is applied to the assets and liabilities related to all real estate investments acquired from third parties. In accordance with current accounting guidance , the fair value of the real estate acquired is allocated to the acquired tangible assets, consisting primarily of land, building and tenant improvements, and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases, value of tenant relationships and acquired ground leases, based in each case on their fair values. Loan premiums, in the case of above market rate loans, or loan discounts, in the case of below market loans, are recorded based on the fair value of any loans assumed in connection with acquiring the real estate. The fair values of the tangible assets of an acquired property are determined based on comparable land sales for land and replacement costs adjusted for physical and market obsolescence for the improvements. The fair values of the tangible assets of an acquired property are also determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land, building and tenant improvements based on management’s determination of the relative fair values of these assets. Management determines the as-if-vacant fair value of a property based on assumptions that a market participant would use, which is similar to methods used by independent appraisers. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions, tenant improvements, legal and other related costs. In allocating the fair value of the identified intangible assets and liabilities of an acquired property, above-market and below-market in-place lease values are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) estimated fair market lease rates from the perspective of a market participant for the corresponding in-place leases, measured, for above-market leases, over a period equal to the remaining non-cancelable term of the lease and, for below-market leases, over a period equal to the initial term plus any below market fixed rate renewal periods. The leases we have acquired do not currently include any below market fixed rate renewal periods. The capitalized above-market lease values are amortized as a reduction of rental income over the remaining non-cancelable terms of the respective leases. The capitalized below-market lease values, also referred to as acquired lease obligations, are amortized as an increase to rental income over the initial terms of the respective leases and any below market fixed rate renewal periods. In addition to the intangible value for above market leases and the intangible negative value for below market leases, there is intangible value related to having tenants leasing space in the purchased property, which is referred to as in-place lease value and tenant relationship value. Such value results primarily from the buyer of a leased property avoiding the costs associated with leasing the property and also avoiding rent losses and unreimbursed operating expenses during the lease up period. Factors to be considered by management in its analysis of in-place lease values include an estimate of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, management considers leasing commissions, legal and other related expenses. Characteristics considered by management in valuing tenant relationships include the nature and extent of the Company’s existing business relationships with the tenant, growth prospects for developing new business with the tenant, the tenant’s credit quality and expectations of lease renewals. The value of in-place leases are amortized to expense over the remaining initial terms of the respective leases. The value of tenant relationship intangibles are amortized to expense over the anticipated life of the relationships. (g) Goodwill Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is not amortized. Management will perform an annual impairment test for goodwill and between annual tests, management will evaluate the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying value of goodwill may not be fully recoverable. In its impairment tests of goodwill, management will first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If based on this assessment, management determines that the fair value of the reporting unit is not less than its carrying value, then performing the additional two-step impairment test is unnecessary. If the carrying value of goodwill exceeds its fair value, an impairment charge is recognized. (h) Capitalization of Costs Direct and indirect project costs that are clearly associated with the development of properties are capitalized as incurred. Project costs include all costs directly associated with the development 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 are not capitalized and are charged to expense as incurred. Capitalization of costs begins when the activities necessary to get the development project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development project is substantially complete and ready for its intended use. Determining when a development project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development project to be substantially complete and ready for its intended use upon receipt of a certificate of occupancy. If and when development of a property is suspended pursuant to a formal change in the planned use of the property, we will evaluate whether the accumulated costs exceed the estimated value of the project and write off the amount of any such excess accumulated costs. For a development project that is suspended for reasons other than a formal change in the planned use of such property, the accumulated project costs are evaluated for impairment consistent with our impairment policies for long-lived assets. Capitalized costs are allocated to the specific components of a project that are benefited. During the years ended December 31, 2015 , 2014 and 2013 , we capitalized interest of approximately $12.9 million , $20.4 million and $26.3 million , respectively. During the years ended December 31, 2015 , 2014 and 2013 , we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $56.8 million , $50.1 million and $38.4 million , respectively. Cash flows used for capitalized leasing costs of $49.9 million , $49.0 million and $57.5 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the consolidated statements of cash flows for the years ended December 31, 2015 , 2014 and 2013 , respectively. (i) Deferred Leasing Costs Leasing commissions and other direct and indirect costs associated with the acquisition of tenants are capitalized and amortized on a straight line basis over the terms of the related leases. Deferred leasing costs is included in Acquired in-place lease value, deferred leasing costs and intangibles on the consolidated balance sheet and amounted to approximately $236.0 million and $229.3 million , net of accumulated amortization, as of December 31, 2015 and 2014, respectively. (j) Foreign Currency Translation Assets and liabilities of our subsidiaries outside the United States with non-U.S. dollar functional currencies are translated into U.S. dollars using exchange rates as of the balance sheet dates. Income and expenses are translated using the average exchange rates for the reporting period. Foreign currency translation adjustments are recorded as a component of other comprehensive income. (k) Deferred Financing Costs Loan fees and costs are capitalized and amortized over the life of the related loans on a straight-line basis, which approximates the effective interest method. Such amortization is included as a component of interest expense. (l) Restricted Cash Restricted cash consists of deposits for real estate taxes and insurance and other amounts as required by our loan agreements including funds for leasing costs and improvements related to unoccupied space. (m) Offering Costs Underwriting commissions and other offering costs are reflected as a reduction in additional paid-in capital, or in the case of preferred stock, as a reduction of the carrying value of preferred stock. (n) Share Based Compensation The Company measures all share-based compensation awards at fair value on the date they are granted to employees and directors, and recognizes compensation cost, net of forfeitures, over the requisite service period for awards with only a service condition. The estimated fair value of the long-term incentive units and Class D Units (discussed in note 13) granted by us is being amortized on a straight-line basis over the expected service period. The fair value of share-based compensation awards that contain a market condition is measured using a Monte Carlo simulation method and not adjusted based on actual achievement of the market condition. (o) Accounting for Derivative Instruments and Hedging Activities We account for our derivative instruments and hedging activities in accordance with the accounting standard for derivative and hedging activities. The accounting standard requires us to measure every derivative instrument (including certain derivative instruments embedded in other contracts) at fair value and record them in the balance sheet as either an asset or liability. 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. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The amount of gain (loss) recognized in income related to the ineffective portion of the hedging relationships for the years ended December 31, 2015 and 2014 was approximately $(1.6) million and $0.8 million , respectively. During the year ended December 31, 2013 , there was no ineffective portion to our interest rate swaps. We actively manage our ratio of fixed-to-floating rate debt. To manage our fixed and floating rate debt in a cost-effective manner, we, from time to time, enter into interest rate swap agreements as cash flow hedges, under which we agree to exchange various combinations of fixed and/or variable interest rates based on agreed upon notional amounts. We do not enter into derivative instruments for trading purposes. (p) Income Taxes Digital Realty Trust, Inc. has elected to be treated as a real estate investment trust (a “REIT”) for federal income tax purposes. As a REIT, Digital Realty Trust, Inc. generally is not required to pay federal corporate income tax to the extent taxable income is currently distributed to its stockholders. If Digital Realty Trust, Inc. 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 Company is subject to foreign, state and local income taxes in the jurisdictions in which it conducts business. The Company’s U.S. consolidated taxable REIT subsidiaries are subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes current and deferred income taxes for its taxable REIT subsidiaries, 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 December 31, 2015 and 2014 , 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 consolidated income statements. For the years ended December 31, 2015 , 2014 and 2013 , we had no such interest or penalties. The tax year 2012 and thereafter remain open to examination by the major taxing jurisdictions with which the Company files tax returns. See Note 10 for further discussion on income taxes. (q) 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. (r) Revenue Recognition All leases are classified as operating leases and minimum rents are recognized on a straight-line basis over the terms of the leases. The excess of rents recognized over amounts contractually due pursuant to the underlying leases is included in deferred rent in the accompanying consolidated balance sheets and contractually due but unpaid rents are included in accounts and other receivables. Tenant reimbursements for real estate taxes, common area maintenance, and other recoverable costs are recognized in the period that the expenses are incurred. Lease termination fees, which are included in other revenue in the accompanying consolidated income statements, are recognized over the new remaining term of the lease, effective as of the date the lease modification is finalized, and assuming collection is probable. A provision for loss is made if the collection of the receivable balances related to contractual rent, rent recorded on a straight-line basis, tenant reimbursements and lease termination fees are considered to be doubtful. (s) 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 December 31, 2015 and 2014 , the amount included in accounts payable and other accrued liabilities on our consolidated balance sheets was approximately $1.3 million and $1.7 million , respectively. (t) Fee Income Occasionally, customers engage the company for certain services. The nature of these services historically involves property management, construction management, and assistance with financing. The proper revenue recognition of these services can be different, depending on whether the arrangements are service revenue or contractor type revenue. Service revenues are typically recognized on an equal monthly basis based on the minimum fee to be earned. The monthly amounts could be adjusted depending on if certain performance milestones are met. Fee income also includes management fees. These fees arise from contractual agreements with entities in which we have a noncontrolling interest. The management fees are recognized as earned under the respective agreements. Management and other fee income related to partially owned entities are recognized to the extent attributable to the unaffiliated interest. (u) 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 lowest level input that is significant would be used to determine 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. (v) 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 significant transactions. (w) 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 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, contingent consideration, accounts receivable and deferred rent receivable, performance-based equity compensation plans and the completeness of accrued liabilities 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. (x) Segment and Geographic 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 real estate services provided to them are standardized throughout the portfolio. 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. Operating revenues from properties in the United States were $1.4 b

Investments In Real Estate

Investments In Real Estate	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Investments In Real Estate	Investments in Real Estate A summary of our investments in properties as of December 31, 2015 and 2014 is as follows: As of December 31, 2015 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 109,389 $ — $ 1,441,749 $ 95,185 $ (608,153 ) $ 1,038,170 Corporate Data Centers 551,372 11,317 8,055,059 433,682 (1,586,509 ) 7,464,921 Technology Manufacturing 20,199 1,322 56,254 6,333 (22,677 ) 61,431 Technology Office 5,368 — 43,154 1,459 (18,564 ) 31,417 Other 3,245 — 80,211 75 (15,365 ) 68,166 $ 689,573 $ 12,639 $ 9,676,427 $ 536,734 $ (2,251,268 ) $ 8,664,105 As of December 31, 2014 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 112,265 $ — $ 1,459,930 $ 99,864 $ (541,023 ) $ 1,131,036 Corporate Data Centers 525,192 12,196 7,117,789 368,837 (1,286,024 ) 6,737,990 Technology Manufacturing 25,471 — 67,238 4,764 (20,506 ) 76,967 Technology Office 5,368 — 42,356 1,459 (14,759 ) 34,424 Other 3,306 — 136,501 76 (11,742 ) 128,141 $ 671,602 $ 12,196 $ 8,823,814 $ 475,000 $ (1,874,054 ) $ 8,108,558 (1) Balance includes, as of December 31, 2015 and 2014 , $0.7 billion and $0.8 billion of direct and accrued costs associated with development in progress, respectively. Telx Acquisition On October 9, 2015, we acquired Telx pursuant to the terms an Agreement and Plan of Merger (the "Merger Agreement"). The purchase price, which was determined through negotiations between us and the sellers, was approximately $1.886 billion (subject to certain adjustments contemplated by the Merger Agreement). Telx is a leading national provider of data center colocation, interconnection and cloud enablement solutions within 13 strategic North American metropolitan areas. Telx operates a total of 20 data center facilities, including six in the New York/New Jersey metropolitan area, two in Chicago, two in Dallas, four in California ( one in each of Los Angeles and San Francisco and two in Santa Clara), two in the Pacific Northwest ( one in each of Seattle and Portland) and one in each of Atlanta, Miami, Phoenix and Charlotte. Telx leases more than half of its facilities from the Company and was our customer for over eight years prior to the Telx Acquisition. In our consolidated financial statements, the historical results of the Company are included for the entire period presented and the results of Telx are included for the period subsequent to the Telx Acquisition. As of December 31, 2015 the Company had not completed its final allocation of the fair value of the net assets of Telx as the Company is waiting for additional information to finalize the valuation of certain of the real estate and intangible assets acquired as well as certain tax related matters including the amount of Telx net operating losses and other deferred tax items that will carry over to the Company. The final purchase price allocation is expected to be completed in early 2016. As such, the estimates used as of December 31, 2015 are subject to change. The following table summarizes the preliminary amounts for acquired assets and liabilities recorded at their fair values as of the acquisition date (in thousands): Investments in real estate $ 604,870 Goodwill 316,309 Intangibles: Tenant relationship value 734,800 Acquired in-place lease value 252,269 Trade name 7,300 Above/below market lease value, net (13,100 ) Capital lease and other long-term obligations (63,962 ) Other working capital accounts and adjustments, net 47,514 Total purchase price $ 1,886,000 The Company determined the preliminary fair value of the real estate acquired using a combination of market comparable transactions, replacement cost estimates and discounted cash flow models. These methods were significantly impacted by estimates related to comparable land values, market rents, and discount rates. The acquisition date fair value of the intangible assets related to tenant relationship value, acquired in-place lease value and trade name were estimated using a discounted cash flow method. These measurements were significantly impacted by estimates related to forecast revenue growth rates, customer attrition rates, market rents, and expected expense synergies. The above/below market lease value was estimated based on comparison of the contractual rents and current market rents for similar space. Capital lease liabilities were valued based on the discounted cash flows of the subject leases using a market discount rate for debt with similar terms and maturities. The acquisition date fair values of the working capital related assets and liabilities were recorded based on their carrying values as of the acquisition date given the short-term nature of these items. Goodwill is the excess consideration remaining after allocating the fair value of the other acquired assets and liabilities and represents the expected future economic benefits and synergies to be achieved by combining the Company and Telx’s product and service offerings. Prior to the acquisition, Telx leased space in several of the Company’s datacenter properties, thus in connection with the acquisition, the Company recognized a gain and additional goodwill of approximately $14.4 million related to the settlement of these pre-existing lease contracts. This gain was offset by the write-off of $75.3 million in deferred rent receivables related to the settled Telx lease contracts. The net loss on settlement related to these items is included in other operating expenses in the accompanying 2015 consolidated income statement. The Company recorded transaction expenses of approximately $17.4 million in the accompanying 2015 consolidated income statement in connection with the Telx acquisition Pro forma Information (unaudited) The following unaudited pro forma financial information presents our results as though the Telx Acquisition, as well as the transactions that were used to fund the Telx Acquisition, had been consummated as of January 1, 2014. The pro forma information does not necessarily reflect the actual results of operations had the transactions been consummated at the beginning of the period indicated nor is it necessarily indicative of future operating results. The pro forma information does not give effect to any cost synergies or other operating efficiencies that could result from the Telx Acquisition and also does not include any transaction and integration expenses. The pro forma results for 2015 include approximately three months of actual results for Telx and nine months of pro forma adjustments. Actual results in 2015 included rental revenues and operating expenses of the acquired properties of $81.1 million and $71.3 million , respectively. (amounts in thousands, except for per share amounts) 2015 2014 Total revenues $ 1,978,405 $ 1,873,526 Net income (loss) available to common stockholders $ 92,812 $ (19,749 ) Net income (loss) per share available to common stockholders - basic and diluted $ 0.63 $ (0.14 ) Acquisitions We acquired the following real estate properties during the years ended December 31, 2015 and 2014 : 2015 Acquisitions Location Metropolitan Area Date Acquired Amount (1) Deer Park 3 (2) Melbourne April 15, 2015 $ 1.6 3 Loyang Way (3)(4) Singapore June 25, 2015 45.0 Digital Loudoun 3 (2) Northern Virginia November 16, 2015 43.0 Digital Frankfurt (2) Frankfurt December 18, 2015 5.6 $ 95.2 2014 Acquisitions Location Metropolitan Area Date Acquired Amount (1) Crawley 2 (2) London September 16, 2014 $ 23.0 (1) Purchase prices are all in U.S. dollars and exclude capitalized closing costs on land acquisitions. Purchase prices for acquisitions outside the United States are based on the exchange rate at the date of acquisition. (2) Represents currently vacant land which is not included in our operating property count. (3) Represents a development property with an existing shell, which is included in our operating property count. This acquisition lacked key inputs to qualify as a business combination under purchase accounting guidance, and has therefore been accounted for as an asset acquisition, not a business combination. (4) Property is subject to a ground lease, which expires in February 2024, with a renewal provision for an additional 28 years upon satisfaction of certain requirements. Dispositions We sold the following real estate properties during the years ended December 31, 2015 and 2014 : 2015 Dispositions Location Metropolitan Area Date Sold Gross Proceeds (in millions) Gain (Loss) on Sale (in millions) 100 Quannapowitt Parkway Boston February 5, 2015 $ 31.1 $ 10.1 3300 East Birch Street Los Angeles March 31, 2015 14.2 7.5 833 Chestnut Street Philadelphia April 30, 2015 160.8 (1) 77.1 650 Randolph Road New York Metro December 30, 2015 9.2 (0.1 ) $ 215.3 $ 94.6 2014 Dispositions Location Metropolitan Area Date Sold Gross Proceeds (in millions) Gain on Sale (in millions) 6 Braham Street London April 7, 2014 $ 41.5 $ 15.9 (1) Gross proceeds includes a $9.0 million note receivable, which was collected prior to year-end. On January 21, 2016, the Operating Partnership closed on the sale of 47700 Kato Road and 1055 Page Avenue, two adjacent non-data center properties totaling 199,000 square feet in Fremont, California for $37.5 million . The sale generated net proceeds of $35.8 million , and we will recognize a gain on the sale of approximately $1.2 million in the first quarter of 2016. The properties were identified as held for sale as of December 31, 2015. 47700 Kato Road and 1055 Page Avenue were not a significant component of our U.S. portfolio nor does the sale represent a significant shift in our strategy. We have identified certain non-core investment properties we intend to sell as part of our capital recycling strategy. Our capital recycling program is designed to identify non-strategic and underperforming assets that can be sold to generate proceeds that will support the funding of our core investment activity. We expect our capital recycling initiative will likewise have a meaningfully positive impact on overall return on invested capital. In addition, our capital recycling program does not represent a strategic shift, as we are not entirely exiting regions or property types. During this process, we are evaluating the carrying value of certain investment properties identified for potential sale to ensure the carrying value is recoverable in light of a potentially shorter holding period. As a result of our evaluation, during the year ended December 31, 2014, we recognized $126.5 million of impairment losses on five properties located in the Midwest, Northeast and West regions. The fair value of the five properties were primarily based on discounted cash flow analysis, and in certain cases, we supplemented the analysis by obtaining broker opinions of value. As of December 31, 2014, three of these five properties met the criteria to be classified as held for sale. As of December 31, 2015 , the Company has taken the necessary actions to conclude that an additional five properties (in addition to the three properties referenced above) to be disposed of as part of our capital recycling strategy met the criteria to be classified as held for sale. As of December 31, 2015 , these eight properties had an aggregate carrying value of $180.1 million within total assets and $5.8 million within total liabilities and are shown as assets held for sale and obligations associated with assets held for sale on the consolidated balance sheet. The eight properties are not representative of a significant component of our portfolio, nor do the potential sales represent a significant shift in our strategy.

Investment In Unconsolidated Jo

Investment In Unconsolidated Joint Ventures	12 Months Ended
	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investment In Unconsolidated Joint Ventures	Investment in Unconsolidated Joint Ventures As of December 31, 2015 , our investment in unconsolidated joint ventures consists of effective 50% interests in three joint ventures that own data center properties at 2001 Sixth Avenue in Seattle, Washington, 2020 Fifth Avenue in Seattle, Washington and 33 Chun Choi Street in Hong Kong, and 20% interests in two joint ventures, one of which owns 10 data center properties with an investment fund managed by Prudential Real Estate Investors (PREI®) and the other which owns one data center property with an affiliate of Griffin Capital Essential Asset REIT, Inc. (GCEAR). The following tables present summarized financial information for our material joint ventures for the years ended December 31, 2015 , 2014, and 2013 (in thousands): 2015 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 33,757 $ 44,732 $ 102,998 $ 107,807 $ (63,075 ) $ 43,734 $ (15,205 ) $ 28,529 $ 14,171 2020 Fifth Avenue 50.00 % 46,633 55,257 47,000 47,857 7,400 8,474 (1,177 ) 7,297 4,840 33 Chun Choi Street (Hong Kong) 50.00 % 138,742 179,525 — 4,173 175,352 17,700 (5,358 ) 12,342 4,480 PREI ® 20.00 % 419,498 481,175 208,000 293,276 187,898 40,011 (6,157 ) 33,854 15,121 GCEAR 20.00 % 119,952 175,301 102,025 105,197 70,104 19,730 (8,249 ) 11,481 (1,262 ) Total Unconsolidated Joint Ventures $ 758,582 $ 935,990 $ 460,023 $ 558,310 $ 377,679 $ 129,649 $ (36,146 ) $ 93,503 $ 37,350 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 106,107 $ 15,491 2014 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 37,620 $ 42,537 $ 104,523 $ 110,749 $ (68,212 ) $ 39,807 $ (14,707 ) $ 25,100 $ 11,982 2020 Fifth Avenue 50.00 % 47,239 55,123 47,000 47,795 7,328 8,308 (1,086 ) 7,222 4,844 33 Chun Choi Street (Hong Kong) 50.00 % 143,014 165,912 — 10,210 155,702 8,671 (2,625 ) 6,046 2,976 PREI ® 20.00 % 429,358 492,494 208,000 296,480 196,014 39,467 (6,144 ) 33,323 12,378 GCEAR 20.00 % 122,521 186,041 102,025 104,661 81,380 6,050 (2,311 ) 3,739 (1,603 ) Total Unconsolidated Joint Ventures $ 779,752 $ 942,107 $ 461,548 $ 569,895 $ 372,212 $ 102,303 $ (26,873 ) $ 75,430 $ 30,577 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 94,729 $ 13,289 2013 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 33,980 $ 39,674 $ 105,953 $ 111,943 $ (72,269 ) $ 37,625 $ (11,981 ) $ 25,644 $ 12,346 700/750 Central Expressway 50.00 % — — — — — 55 (1 ) 54 58 2020 Fifth Avenue 50.00 % 47,901 53,389 47,000 47,525 5,864 7,513 (522 ) 6,991 5,756 33 Chun Choi Street (Hong Kong) 50.00 % 102,428 122,890 — 8,382 114,508 — (44 ) (44 ) (150 ) PREI ® 20.00 % 400,528 460,062 185,000 276,212 183,850 9,577 (4,479 ) 5,098 2,641 Total Unconsolidated Joint Ventures $ 584,837 $ 676,015 $ 337,953 $ 444,062 $ 231,953 $ 54,770 $ (17,027 ) $ 37,743 $ 20,651 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 70,504 $ 9,796 We amortize the difference between the cost of our investment in the joint ventures and the book value of the underlying equity into income on a straight-line basis consistent with the lives of the underlying assets. The amortization of this difference was approximately $0.3 million , $0.5 million and $0.1 million for the years ended December 31, 2015, 2014 and 2013, respectively. PREI ® Joint Venture On September 27, 2013, we formed a joint venture with an investment fund managed by Prudential Real Estate Investors (PREI ® ). We contributed nine Powered Base Building ® data centers valued at approximately $366.4 million plus 20% of $2.8 million of closing costs. The PREI ® -managed fund contributed cash equal to their 80% interest in the joint venture assets at fair value and we retained a 20% interest. The joint venture is structured to provide a current annual preferred return from cash flow first to the PREI ® -managed interest, then to our interest, after which a portion of any excess cash flows is shared by the partners based on their respective interests and the remaining portion is paid to us as a promote interest. We perform the day-to-day accounting and property management functions for the joint venture and, as such, earn a management fee. Although we are the managing member of the joint venture and manage the day-to-day activities, all significant decisions, including approval of annual budgets, require approval of the PREI-managed member. Thus, we concluded we do not own a controlling interest and account for our interest in the joint venture as an equity method investment. The joint venture has arranged a $185.0 million five -year unsecured bank loan at LIBOR plus 180 basis points, representing a loan-to-value ratio of approximately 50% . Proceeds from the debt offset the contribution amounts required of the partners. The transaction generated approximately $328.6 million of net proceeds to us, comprised of our share of the initial draw-down on the bank loan in addition to the PREI ® fund’s equity contribution, less our share of closing costs and accordingly we recognized a gain of approximately $115.6 million on the sale of the 80% interest in the nine properties during the year ended December 31, 2013. Differences between the Company’s investment in the joint venture and the amount of the underlying equity in net assets of the joint venture are due to basis differences resulting from the Company’s equity investment recorded at its historical basis versus the fair value of the Company’s contributed interest in the joint venture. Our proportionate share of the earnings or losses related to this unconsolidated joint venture is reflected as equity in earnings of unconsolidated joint ventures on the accompanying consolidated income statements. On March 5, 2014, we contributed the 636 Pierce Street property, which we acquired in December 2013, the joint venture. The property was valued at approximately $40.4 million and subject to $26.1 million in debt, which the joint venture assumed. The PREI® fund contributed approximately $11.4 million in cash for their 80% share of the net asset value of $14.3 million . Subsequent to the closing, the joint venture refinanced the existing debt with $23.0 million drawn from the joint venture’s bank facility. Including the refinance costs, the PREI® fund contributed $17.5 million for the 636 Pierce Street property, bringing their contributed capital in the joint venture to $164.8 million . The transaction generated net proceeds of approximately $11.4 million and resulted in a $1.9 million gain. Griffin Capital Essential Asset REIT, Inc. Joint Venture On September 9, 2014, we formed a joint venture with an affiliate of Griffin Capital Essential Asset REIT, Inc. (GCEAR). We contributed to the joint venture the property located at 43915 Devin Shafron Drive (Building A) in Ashburn, Virginia, which is a Turn-Key Flex® data center property valued at approximately $185.5 million (excluding approximately $2.1 million of closing costs). GCEAR contributed cash to the joint venture and holds an 80% interest in the joint venture. We retained a 20% interest in the joint venture. The joint venture agreement provides for a current annual preferred return from cash flow first to GCEAR and then to us, after which a portion of any excess cash flows is shared by the partners based on their respective interests and the remaining portion is paid to us as a promote interest. We perform the day-to-day accounting and property management functions for the joint venture and the property and, as such, earn management fees. Although we are the managing member of the joint venture and manage the day-to-day activities, certain major decisions, including approval of annual budgets, require approval of the GCEAR member. Thus, we concluded we do not own a controlling interest and account for our interest in the joint venture as an equity method investment. The joint venture arranged a $102.0 million five -year secured bank loan at LIBOR plus 225 basis points, representing a loan-to-value ratio of approximately 55% . The joint venture entered into an interest rate swap agreement to effectively fix the interest rate on approximately $51.0 million of borrowings under the loan through September 2019. Two one -year extensions of the maturity date are available under the loan agreement, which the joint venture may exercise if certain conditions are met. Proceeds from this loan offset the initial cash capital contribution amount required from GCEAR and was used to provide us with a special distribution on account of a portion of the contribution value of the property. The transaction generated approximately $167.5 million of net proceeds to us, comprised of our share of the initial draw-down on the bank loan in addition to GCEAR’s equity contribution, less our share of closing costs. Accordingly we recognized a gain of approximately $93.5 million on the sale of the 80% interest in the joint venture during the year ended December 31, 2014. Differences between the Company’s investment in the joint ventures and the amount of the underlying equity in net assets of the joint ventures result from the Company’s equity investment recorded at its historical basis versus the fair value of the Company’s contributed interest recorded at the joint venture level. Our proportionate share of the earnings or losses related to these unconsolidated joint ventures is reflected as equity in earnings of unconsolidated joint ventures on the accompanying consolidated income statements and reflects the amortization of such basis differences. Sale of Investment On October 17, 2014, we closed on the sale of our investment in a developer of data centers in the Southwestern U.S. and Mexico, generating net proceeds of approximately $31.7 million . We recognized a gain on sale of approximately $14.6 million in the fourth quarter of 2014. The original investment of $17.1 million was included in other assets on the consolidated balance sheet.

Acquired Intangible Assets and

Acquired Intangible Assets and Liabilities	12 Months Ended
	Dec. 31, 2015
Acquired Intangible Assets And Liabilities [Abstract]
Acquired Intangible Assets And Liabilities	Acquired Intangible Assets and Liabilities The following summarizes our acquired intangible assets (real estate intangibles, comprised of acquired in place lease value, tenant relationship value and trade name along with acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of December 31, 2015 and 2014 . Balance as of (Amounts in thousands) December 31, 2015 December 31, Real Estate Intangibles: Acquired in place lease value: Gross amount $ 901,381 $ 680,419 Accumulated amortization (472,933 ) (452,739 ) Net $ 428,448 $ 227,680 Tenant relationship value: Gross amount $ 734,800 $ — Accumulated amortization (14,495 ) — Net $ 720,305 $ — Trade name: Gross amount $ 7,300 $ — Accumulated amortization (417 ) — Net $ 6,883 $ — Acquired above market leases: Gross amount $ 122,311 $ 126,677 Accumulated amortization (89,613 ) (88,072 ) Net $ 32,698 $ 38,605 Acquired below market leases: Gross amount $ 294,791 $ 282,670 Accumulated amortization (193,677 ) (178,435 ) Net $ 101,114 $ 104,235 Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $9.3 million , $10.0 million and $11.7 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 5.9 years and 3.7 years, respectively, as of December 31, 2015 . Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years and thereafter, commencing January 1, 2016 is as follows: (Amounts in thousands) 2016 $ 8,403 2017 6,867 2018 5,222 2019 5,285 2020 7,351 Thereafter 35,288 Total $ 68,416 Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $46.2 million , $62.2 million and $62.7 million for the years ended December 31, 2015 , 2013 and 2012, respectively. The expected average amortization period for acquired in place lease value is 6.3 years as of December 31, 2015 . The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 4.9 years as of December 31, 2015 . Estimated annual amortization of acquired in place lease value for each of the five succeeding years and thereafter, commencing January 1, 2016 is as follows: (Amounts in thousands) 2016 $ 53,391 2017 48,879 2018 46,636 2019 44,150 2020 40,108 Thereafter 195,284 Total $ 428,448 Amortization of tenant relationship value and trade names (a component of depreciation and amortization expense) was approximately $14.5 million and $0.4 million , respectively for the year ended December 31, 2015 and $0 in all preceding years. The weighted average remaining contractual life for customer contracts and trade names is 11.4 years and 3.8 years , respectively. Estimated annual amortization of customer contracts and trade names for each of the five succeeding years and thereafter, commencing January 1, 2016 is as follows: (Amounts in thousands) 2016 $ 65,261 2017 65,261 2018 65,261 2019 64,844 2020 63,436 Thereafter 403,125 Total $ 727,188

Debt of the Company

Debt of the Company	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Debt of the Company	Debt of the Company In this Note 6, 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 5.875% notes due 2020 (2020 Notes), 5.250% notes due 2021 (2021 Notes), 3.950% notes due 2022 (3.950% 2022 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, as amended, which we refer to as the Prudential Shelf Facility. The Company and the Operating Partnership guarantee the obligations of Digital Stout Holding, LLC, a wholly owned subsidiary of the Operating Partnership, with respect to its 4.750% notes due 2023 (2023 Notes) and 4.250% notes due 2025 (2025 Notes). Prior to the completion of the Operating Partnership Merger (as defined in Note 7 "Debt of the Operating Partnership"), the Company and the Operating Partnership guaranteed the obligations of Digital Delta Holdings, LLC, a wholly owned subsidiary of Digital Realty Trust, Inc., with respect to its 3.400% Notes due 2020 (3.400% 2020 Notes) and 4.750% Notes due 2025 (4.750% 2025 Notes). Following the completion of the Operating Partnership Merger, the 3.400% 2020 Notes and 4.750% 2025 Notes became the senior unsecured obligations of the Operating Partnership and remain guaranteed by the Company. The Company is also the guarantor of the Operating Partnership’s and its subsidiary borrowers’ obligations under the global revolving credit facility and unsecured term loan.

Debt of the Operating Partnersh

Debt of the Operating Partnership	12 Months Ended
	Dec. 31, 2015
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Debt of the Operating Partnership	Debt of the Operating Partnership A summary of outstanding indebtedness of the Operating Partnership as of December 31, 2015 and 2014 is as follows (in thousands): Indebtedness Interest Rate at December 31, 2015 Maturity Date Principal Outstanding December 31, 2015 Principal Outstanding December 31, 2014 Global revolving credit facility Various (1) Nov 3, 2017 $ 967,884 (2) $ 525,951 (2) Unsecured term loan Various (3)(9) Apr 16, 2017 924,568 (4) 976,600 (4) Unsecured senior notes: Prudential Shelf Facility: Series C 9.680% Jan 6, 2016 25,000 (5) 25,000 Series D 4.570% Jan 20, 2015 — 50,000 Series E 5.730% Jan 20, 2017 50,000 50,000 Series F 4.500% Feb 3, 2015 — 17,000 Total Prudential Shelf Facility 75,000 142,000 Senior Notes: 4.50% notes due 2015 4.500% Jul 15, 2015 — 375,000 5.875% notes due 2020 5.875% Feb 1, 2020 500,000 500,000 3.40% notes due 2020 3.400% Oct 1, 2020 500,000 — 5.25% notes due 2021 5.250% Mar 15, 2021 400,000 400,000 3.95% notes due 2022 3.950% Jul 1, 2022 500,000 — 3.625% notes due 2022 3.625% Oct 1, 2022 300,000 300,000 4.75% notes due 2023 4.750% Oct 13, 2023 442,080 (10) 467,310 (10) 4.25% notes due 2025 4.250% Jan 17, 2025 589,440 (10) 623,080 (10) 4.75% notes due 2025 4.750% Oct 1, 2025 450,000 — Unamortized discounts (17,914 ) (15,632 ) Total senior notes, net of discount 3,663,606 2,649,758 Total unsecured senior notes, net of discount 3,738,606 2,791,758 Mortgage loans: 200 Paul Avenue 1-4 (7) 5.74% Oct 8, 2015 — 68,665 2045 & 2055 Lafayette Street (7) 5.93% Feb 6, 2017 61,437 62,563 34551 Ardenwood Boulevard 1-4 (7) 5.95% Nov 11, 2016 50,477 51,339 1100 Space Park Drive (7) 5.89% Dec 11, 2016 50,423 51,295 600 West Seventh Street 5.80% Mar 15, 2016 46,000 (6) 47,825 150 South First Street (7) 6.30% Feb 6, 2017 48,484 49,316 2334 Lundy Place (7) 5.96% Nov 11, 2016 36,714 37,340 8025 North Interstate 35 4.09% Mar 6, 2016 5,789 (8) 6,057 731 East Trade Street 8.22% Jul 1, 2020 3,420 3,836 Unamortized net premiums 439 582 Total mortgage loans, including premiums 303,183 378,818 Total indebtedness $ 5,934,241 $ 4,673,127 (1) The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 110 basis points, which is based on the credit rating of our long-term debt. An annual facility fee of 20 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the total commitment amount of the facility. Two six -month extensions are available, which we may exercise if certain conditions are met. (2) Balances as of December 31, 2015 and December 31, 2014 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2015 Weighted-average Balance as of December 31, 2014 Weighted-average Floating Rate Borrowing (a) U.S. dollar ($) $ 274,000 1.46 % $ 90,000 1.27 % British pound sterling (£) 95,784 (c) 1.61 % 132,716 1.61 % Euro (€) 280,565 (c) 0.90 % 58,071 (d) 1.13 % Australian dollar (AUD) 96,831 (c) 3.16 % 72,676 (d) 3.74 % Hong Kong dollar (HKD) 86,082 (c) 1.33 % 79,336 (d) 1.34 % Japanese yen (JPY) 14,304 (c) 1.15 % 13,201 (d) 1.17 % Singapore dollar (SGD) 49,132 (c) 1.92 % 6,565 — Canadian dollar (CAD) 71,186 (c) 1.95 % 62,386 (d) 2.39 % Total $ 967,884 1.53 % $ 514,951 1.84 % Base Rate Borrowing (b) U.S. dollar ($) $ — — % $ 11,000 3.35 % Total borrowings $ 967,884 1.53 % $ 525,951 1.87 % (a) The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit rating of our long-term debt. (b) The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit rating of our long-term debt. (c) Based on exchange rates of $1.47 to £1.00, $1.09 to €1.00 , $0.73 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.70 to 1.00 SGD and $0.72 to 1.00 CAD, respectively, as of December 31, 2015 . (d) Based on exchange rates $1.56 to £1.00, of $1.21 to €1.00 , $0.82 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.75 to 1.00 SGD and $0.86 to 1.00 CAD, respectively, as of December 31, 2014 . (3) Interest rates are based on our current senior unsecured debt ratings and are 120 basis points over the applicable index for floating rate advances. Two six -month extensions are available, which we may exercise if certain conditions are met. (4) Balances as of December 31, 2015 and December 31, 2014 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2015 Weighted-average Balance as of December 31, 2014 Weighted-average U.S. dollar ($) $ 410,905 1.51 % (b) $ 410,905 1.36 % (d) Singapore dollar (SGD) 161,070 (a) 2.16 % (b) 172,426 (c) 1.45 % (d) British pound sterling (£) 178,195 (a) 1.78 % 188,365 (c) 1.76 % Euro (€) 99,061 (a) 1.00 % 120,375 (c) 1.22 % Australian dollar (AUD) 75,337 (a) 3.27 % 84,529 (c) 3.98 % Total $ 924,568 1.76 % (b) $ 976,600 1.66 % (d) (a) Based on exchange rates of $0.70 to 1.00 SGD, $1.47 to £1.00 , $1.09 to €1.00 and $0.73 to 1.00 AUD, respectively, as of December 31, 2015 . (b) As of December 31, 2015 , the weighted-average interest rate reflecting interest rate swaps was 1.90% (U.S. dollar), 2.19% (Singapore dollar) and 1.94% (Total). See Note 14 for further discussion on interest rate swaps. (c) Based on exchange rates of $0.75 to 1.00 SGD, $1.56 to £1.00 , $1.21 to €1.00 and $0.82 to 1.00 AUD, respectively, as of December 31, 2014 . (d) As of December 31, 2014 , the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.01% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps. (5) This note was paid in full at maturity in January 2016. (6) This mortgage loan was paid in full in February 2016. (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) This mortgage loan was paid in full in January 2016 (9) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar and Singapore dollar tranches of the unsecured term loan. See note 14 for further information. (10) Based on exchange rate of $1.47 to £1.00 as of December 31, 2015 and $1.56 to £1.00 as of December 31, 2014. Global Revolving Credit Facility On August 15, 2013, the Operating Partnership refinanced its then-existing global revolving credit facility, increasing its total borrowing capacity to $2.0 billion from $1.8 billion . The global revolving credit facility had an accordion feature that would enabled us to increase the borrowing capacity of the credit facility to $2.55 billion , subject to the receipt of lender commitments and other conditions precedent. The refinanced facility matured on November 3, 2017, with two six -month extension options available. The interest rate for borrowings under the expanded facility equaled the applicable index plus a margin which was based on the credit ratings of our long-term debt and was 110 basis points. An annual facility fee on the total commitment amount of the facility, based on the credit ratings of our long-term debt, was 20 basis points and was payable quarterly. Funds were available in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, British pound sterling, Swiss franc, Japanese yen and Mexican peso denominations. As of December 31, 2015 , interest rates were based on 1-month LIBOR, 1-month GBP LIBOR, 1-month EURIBOR, 1-month BBR, 1-month HIBOR, 1-month JPY LIBOR, 1-month SIBOR and 1-month CDOR plus a margin of 1.10% . The facility also bore a base borrowing rate of 3.35% (USD) which is based on U.S. Prime Rate plus a margin of 0.10% . We have used borrowings under the global revolving credit facility to acquire additional properties, to fund development opportunities and for general working capital and other corporate purposes. As of December 31, 2015 , we have capitalized approximately $18.0 million of financing costs related to the global revolving credit facility. As of December 31, 2015 , approximately $967.9 million was drawn under this facility and $8.7 million of letters of credit were issued, leaving approximately $0.9 billion available for use. On January 15, 2016, the Operating Partnership refinanced our global revolving credit facility and entered into a global senior credit agreement for a $2.0 billion senior unsecured revolving credit facility, which we refer to as the 2016 global revolving credit facility, that replaced the $2.0 billion revolving credit facility executed on August 15, 2013, as amended. The 2016 global revolving credit facility provides for borrowings in Australian dollars, British pounds sterling, Canadian dollars, Euros, Hong Kong dollars, Japanese yen, Singapore dollars, and U.S. dollars, and includes the ability to add additional currencies in the future. The 2016 global revolving credit facility has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to $2.5 billion , subject to the receipt of lender commitments and other conditions precedent. The 2016 global revolving credit facility matures on January 15, 2020, with two six -month extension options available. The 2016 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 2016 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 December 31, 2015 , we were in compliance with all of such covenants. Unsecured Term Loan On August 15, 2013, we refinanced our then-existing senior unsecured multi-currency term loan facility, increasing its total borrowing capacity to $1.0 billion from $750.0 million . Pursuant to the accordion feature, total commitments could be increased to $1.1 billion , subject to the receipt of lender commitments and other conditions precedent. The facility matured on April 16, 2017, with two six -month extension options available. Interest rates were based on our senior unsecured debt ratings and were 120 basis points over the applicable index for floating rate advances. Funds were available in U.S, Singapore and Australian dollars, as well as Euro and British pound sterling denominations with the option to add Hong Kong dollars and Japanese yen upon an accordion exercise. Based on exchange rates in effect at December 31, 2015 , the balance outstanding was approximately $1.0 billion . We have used borrowings under the term loan for acquisitions, repayment of indebtedness, development, working capital and general corporate purposes. The covenants under this loan are consistent with our global revolving credit facility and, as of December 31, 2015 , we were in compliance with all of such covenants. As of December 31, 2015 , we have capitalized approximately $8.4 million of financing costs related to the unsecured term loan. On January 15, 2016, the Operating Partnership refinanced the senior unsecured multi-currency term loan facility and entered into a term loan agreement which governs (i) a $1.25 billion 5 -year senior unsecured term loan (the “5-Year Term Loan”) and (ii) a $300 million 7 -year senior unsecured term loan (the “7-Year Term Loan”). The term loan agreement replaced the $1.0 billion term loan agreement executed on April 16, 2012, as amended. The term loan agreement provides for borrowings in Australian dollars, British pounds sterling, Canadian dollars, Euros, Hong Kong dollars, Japanese yen, Singapore dollars and U.S. dollars. The maturity date of the 5 -Year Term Loan is January 15, 2021 and the maturity date of the 7 -Year Term Loan is January 15, 2023. In addition, we have the ability from time to time to increase the aggregate size of lending under the Term Loan Agreement from $1.5 billion up to $1.8 billion , subject to receipt of lender commitments and other conditions precedent. Unsecured Senior Notes Prudential Shelf Facility On January 20, 2010, the Operating Partnership closed the sale of $100.0 million aggregate principal amount of its senior unsecured term notes to Prudential Investment Management, Inc. and certain of its affiliates, or, collectively, Prudential, pursuant to a Note Purchase and Private Shelf Agreement, which we refer to as the Prudential shelf facility. The notes were issued in two series referred to as the series D and series E notes. The series D notes had a principal amount of $50.0 million , an interest-only rate of 4.57% per annum and a five -year maturity, and the series E notes have a principal amount of $50.0 million , an interest-only rate of 5.73% per annum and a seven -year maturity. On February 3, 2010 , the Operating Partnership closed the sale of an additional $17.0 million aggregate principal amount of its senior unsecured term notes, which we refer to as the series F notes, to Prudential pursuant to the Prudential shelf facility. The series F notes had an interest-only rate of 4.50% per annum and a five -year maturity. We used the proceeds of the series D, series E and series F notes to fund acquisitions, to temporarily repay borrowings under our corporate revolving credit facility, to fund working capital and for general corporate purposes. The sale of the series A ( $25.0 million ), series B ( $33.0 million ) and series C ( $25.0 million ) notes were completed in July 2008, November 2008 and January 2009, respectively. We could prepay the notes of any series, in whole or in part, at any time at a price equal to the principal amount and accrued interest of the notes being prepaid, plus a make-whole provision. On December 8, 2010, the Operating Partnership and Prudential entered into an amendment to the Note Purchase and Private Shelf Agreement, increasing the capacity of the Prudential shelf facility from $200.0 million to $250.0 million . Our ability to make additional issuances of notes under the Prudential shelf facility expired on July 24, 2011, with $50.0 million remaining unissued under the shelf facility. On July 25, 2011, we repaid the $25.0 million of 7.00% Series A unsecured notes under the Prudential shelf facility at maturity. On November 5, 2013, we repaid the $33.0 million of 9.32% Series B unsecured notes under the Prudential shelf facility at maturity. On January 20, 2015 and February 3, 2015, we repaid the $50.0 million of 4.57% Series D unsecured notes and $17.0 million of 4.50% Series F unsecured notes under the Prudential shelf facility at maturity, respectively. As of December 31, 2015 and 2014 , there was $75.0 million and $142.0 million of unsecured senior notes outstanding, respectively. On August 15, 2013, concurrent with the refinancing of the global revolving credit facility, the Operating Partnership and Digital Realty Trust, Inc. and the other subsidiary guarantors set forth therein entered into Amendment No.1to the Amended and Restated Note Purchase and Private Shelf Agreement with Prudential to conform the restrictive and financial covenants of the original Prudential shelf facility that apply to the outstanding Series B, C, D, E and F Notes under the Prudential shelf facility to those in the global revolving credit facility described above and, subject to the completion of specified conditions, to authorize the potential issuance and sale of up to $50.0 million of additional senior unsecured fixed-rate term notes. The Prudential shelf facility contains restrictive covenants that are identical to those in our global revolving credit facility. Senior Notes 5.875% Notes due 2020 On January 28, 2010, the Operating Partnership issued $500.0 million aggregate principal amount of notes, maturing on February 1, 2020 with an interest rate of 5.875% per annum (the 2020 Notes). The purchase price paid by the initial purchasers was 98.296% of the principal amount. The 2020 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 2020 Notes is payable on February 1 and August 1 of each year, beginning on August 1, 2010. The net proceeds from the offering after deducting the original issue discount of approximately $8.5 million and underwriting commissions and expenses of approximately $4.4 million was approximately $487.1 million . The 2020 Notes have been reflected net of discount in the consolidated balance sheet. The indenture governing the 2020 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 December 31, 2015 , we were in compliance with each of these financial covenants. We entered into a registration rights agreement whereby the Operating Partnership agreed to conduct an offer to exchange the 2020 Notes for a new series of publicly registered notes with substantially identical terms. If the Operating Partnership did not fulfill certain of its obligations under the registration rights agreement, it would have been required to pay liquidated damages to the holders of the 2020 Notes. No separate contingent obligation was recorded as no liquidated damages became probable. We filed a registration statement with the U.S. Securities and Exchange Commission in June 2010 in connection with the exchange offer, which was declared effective in September 2010. We completed the exchange offer on November 5, 2010. 5.250% Notes due 2021 On March 8, 2011, the Operating Partnership issued $400.0 million aggregate principal amount of notes, maturing on March 15, 2021 with an interest rate of 5.250% per annum (the 2021 Notes). The purchase price paid by the initial purchasers was 99.775% of the principal amount. The 2021 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 2021 Notes is payable on March 15 and September 15 of each year, beginning on September 15, 2011. The net proceeds from the offering after deducting the original issue discount of approximately $0.9 million and underwriting commissions and expenses of approximately $3.6 million was approximately $395.5 million . The 2021 Notes have been reflected net of discount in the consolidated balance sheet. The indenture governing the 2021 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 December 31, 2015 , we were in compliance with each of these financial covenants. 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 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 December 31, 2015 , we were in compliance with each of these financial covenants. 4.750% Notes due 2023 On April 1, 2014, Digital Stout Holding, LLC, a wholly-owned subsidiary of Digital Realty Trust, L.P., issued £300.0 million (or approximately $498.9 million based on the April 1, 2014 exchange rate of £1.00 to $1.66 ) aggregate principal amount of its 4.750% Guaranteed Notes due 2023, or the 2023 Notes. The 2023 Notes are senior unsecured obligations of Digital Stout Holding, LLC and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. and Digital Realty Trust, L.P. Interest on the 2023 Notes is payable semiannually in arrears at a rate of 4.750% per annum. The 2023 Notes mature on October 13, 2023. The net proceeds from the offering after deducting the original issue discount of approximately $3.0 million and underwriting commissions and estimated expenses of approximately $5.0 million was approximately $490.9 million . We used the net proceeds from this offering to temporarily repay borrowings under our global revolving credit facility. The 2023 Notes have been reflected net of discount in the condensed consolidated balance sheet. The indenture governing the 2023 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 the unsecured debt. At December 31, 2015 , we were in compliance with these financial covenants. 4.250% Notes due 2025 On January 18, 2013, Digital Stout Holding, LLC, a wholly-owned subsidiary of the Operating Partnership, issued £400.0 million (or approximately $634.8 million based on the exchange rate of £1.00 to $1.59 on January 18, 2013) aggregate principal amount of its 4.250% Guaranteed Notes due 2025, or the 2025 Notes. The 2025 Notes are senior unsecured obligations of Digital Stout Holding, LLC and are fully and unconditionally guaranteed by the Company and the Operating Partnership. Interest on the 2025 Notes is payable semiannually in arrears at a rate of 4.250% per annum. The net proceeds from the offering after deducting the original issue discount of approximately $4.8 million and underwriting commissions and estimated expenses of approximately $5.8 million was approximately $624.2 million . We used the net proceeds from this offering to temporarily repay borrowings under our global revolving credit facility. The 2025 Notes have been reflected net of discount in the consolidated balance sheet. The indenture governing the 2025 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 the unsecured debt. At December 31, 2015 , we were in compliance with all of such covenants. 3.950% Notes due 2022 On June 23, 2015, the Operating Partnership issued $500.0 million in aggregate principal amount of notes, maturing on July 1, 2022 with an interest rate of 3.950% per annum (the 3.950% 2022 Notes). The public offering price was 99.236% of the principal amount. The 3.950% 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 3.950% 2022 Notes is payable on January 1 and July 1 of each year, beginning on January 1, 2016. The net proceeds from the offering after deducting the original issue discount of approximately $3.8 million and underwriting commissions and expenses of approximately $4.4 million was approximately $491.8 million . The Operating Partnership has used and will use the net proceeds from the offering of the 3.950% 2022 Notes to fund certain eligible green projects, including the development and redevelopment of such projects. Pending such uses, the Operating Partnership temporarily repaid borrowings under its global revolving credit facility. The 3.950% 2022 Notes have been reflected net of discount in the condensed consolidated balance sheet. The indenture governing the 3.950% 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 December 31, 2015 , we were in compliance with each of these financial covenants. 3.400% Notes due 2020 and 4.750% Notes due 2025 On October 1, 2015, Digital Delta Holdings, LLC, a Delaware limited liability company and wholly owned subsidiary of Digital Realty Trust, Inc., issued $500.0 million aggregate principal amount of its 3.400% Notes due 2020 (the “3.400% 2020 notes”) and $450.0 million aggregate principal amount of its 4.750% Notes due 2025 (the “4.750% 2025 notes” and together with the 3.400% 2020 notes, the “Delta Holdings Notes”), fully and unconditionally guaranteed by Digital Realty Trust, Inc. and Digital Realty Trust, L.P. The terms of the Delta Holdings Notes are governed by an indenture, dated as of October 1, 2015, by and among Digital Delta Holdings, LLC, as issuer, Digital Realty Trust, Inc. and Digital Realty Trust, L.P., as guarantors, and Wells Fargo Bank, National Association, as trustee. The indenture contains various restrictive covenants, including limitations on the ability of Digital Realty Trust, L.P. and its subsidiaries to incur additional indebtedness and requirements to maintain a pool of unencumbered assets. Digital Delta Holdings, LLC used the net proceeds from the offering to fund a portion of the aggregate purchase price for the Telx Acquisition. The purchase price paid by the initial purchasers for the 3.400% 2020 notes and 4.750% 2025 notes was 99.777% and 100.000% of the principal amount thereof, respectively. The 3.400% 2020 notes and 4.750% 2025 notes bear interest at 3.400% and 4.750% per annum, respectively. Interest is payable on April 1 and October 1 of each year, beginning April 1, 2016, until the respective maturity dates of October 1, 2020 and October 1, 2025. Pursuant to the terms of the indenture, within five business days following the consummation of the Telx Acquisition, Digital Delta Holdings, LLC was required to merge with and into Digital Realty Trust, L.P., with Digital Realty Trust, L.P. surviving the merger (the “Operating Partnership Merger”) and to assume Digital Delta Holdings, LLC’s obligations under the Delta Holdings Notes and the related indenture and registration rights agreement by operation of law. The Operating Partnership Merger was consummated on October 13, 2015. Subsequent to the Operating Partnership Merger, the Notes are the Operating Partnership’s senior unsecured obligations and rank equally in right of payment with all of the Operating Partnership’s other unsecured and unsubordinated indebtedness from time to time outstanding. However, the Delta Holdings Notes are effectively subordinated in right of payment to all of the operating partnership’s existing and future secured indebtedness (to the extent of the collateral securing the same) and to all existing and future liabilities and preferred equity of the Operating Partnership’s subsidiaries. Prior to the completion of the Operating Partnership Merger, Digital Realty Trust, Inc. and the Operating Partnership guaranteed the obligations of the Delta Holdings Notes. Following the completion of the Operating Partnership Merger, the Delta Holdings Notes became the senior unsecured obligations of the Operating Partnership and remained guaranteed by Digital Realty Trust, Inc. The Delta Holdings Notes will be redeemable in whole at any time or in part from time to time, at the Operating Partnership’s option, at a redemption price equal to the sum of: • an amount equal to 100% of the principal amount of the Delta Holdings Notes to be redeemed plus accrued and unpaid interest up to, but not including, the redemption date; and • a make-whole premium calculated in accordance with the indenture. Notwithstanding the foregoing, if any of the 3.400% 2020 Notes are redeemed on or after September 1, 2020 or if any of the 4.750% 2025 Notes are redeemed on or after July 1, 2025, the redemption price will not include a make-whole premium. The table below summarizes our debt maturities and principal payments as of December 31, 2015 (in thousands): Global Revolving Unsecured Prudential Senior Notes (2) Mortgage Total 2016 $ — $ — $ 25,000 $ — $ 191,979 $ 216,979 2017 967,884 924,568 50,000 — 108,395 2,050,847 2018 — — — — 593 593 2019 — — — — 644 644 2020 — — — 1,000,000 1,133 1,001,133 Thereafter — — — 2,681,520 — 2,681,520 Subtotal $ 967,884 $ 924,568 $ 75,000 $ 3,681,520 $ 302,744 $ 5,951,716 Unamortized discount — — — (17,914 ) — (17,914 ) Unamortized premium — — — — 439 439 Total $ 967,884 $ 924,568 $ 75,000 $ 3,663,606 $ 303,183 $ 5,934,241 (1) Subject to two six -month extension options exercisable by us. The bank group is obligated to grant the extension options provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility and the unsecured term loan, as applicable. (2) On January 6, 2016, we repaid the $25.0 million of 9.68% Series C unsecured notes under the Prudential shelf facility at maturity. (3) In January and February 2016, we repaid in full two mortgage loans in the aggregate amount of $51.5 million .

Income Per Share

Income Per Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Income Per Share	Income per Share The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts): Year Ended December 31, 2015 2014 2013 Net income available to common stockholders $ 217,266 $ 132,718 $ 271,583 Weighted average shares outstanding—basic 138,247,606 133,369,047 127,941,134 Potentially dilutive common shares: Stock options 20,424 30,434 61,375 Unvested incentive units 95,746 90,449 125,132 Market performance-based awards 501,645 147,305 — Weighted average shares outstanding—diluted 138,865,421 133,637,235 128,127,641 Income per share: Basic $ 1.57 $ 1.00 $ 2.12 Diluted $ 1.56 $ 0.99 $ 2.12 We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2015 2014 2013 Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. 2,658,291 2,753,614 2,521,400 Potentially dilutive 2029 Debentures — 1,957,963 6,649,510 Potentially dilutive Series D Cumulative Convertible — — 470,748 Potentially dilutive Series E Cumulative Redeemable Preferred Stock 4,301,438 4,956,175 5,176,886 Potentially dilutive Series F Cumulative Redeemable Preferred Stock 2,727,962 3,143,195 3,283,169 Potentially dilutive Series G Cumulative Redeemable Preferred Stock 3,730,042 4,297,805 3,898,376 Potentially dilutive Series H Cumulative Redeemable Preferred Stock 5,465,987 4,320,495 — Potentially dilutive Series I Cumulative Redeemable Preferred Stock 1,235,063 — — 20,118,783 21,429,247 22,000,089

Income Per Unit

Income Per Unit	12 Months Ended
	Dec. 31, 2015
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Income Per Unit	Income per Unit The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts): Year Ended December 31, 2015 2014 2013 Net income available to common unitholders $ 220,343 $ 135,485 $ 276,949 Weighted average units outstanding—basic 140,905,897 136,122,661 130,462,534 Potentially dilutive common units: Stock options 20,424 30,434 61,375 Unvested incentive units 95,746 90,449 125,132 Market performance-based awards 501,645 147,305 — Weighted average units outstanding—diluted 141,523,712 136,390,849 130,649,041 Income per unit: Basic $ 1.56 $ 1.00 $ 2.12 Diluted $ 1.55 $ 0.99 $ 2.12 We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2015 2014 2013 Potentially dilutive 2029 Debentures — 1,957,963 6,649,510 Potentially dilutive Series D Cumulative Convertible Preferred Units — — 470,748 Potentially dilutive Series E Cumulative Redeemable Preferred Units 4,301,438 4,956,175 5,176,886 Potentially dilutive Series F Cumulative Redeemable Preferred Units 2,727,962 3,143,195 3,283,169 Potentially dilutive Series G Cumulative Redeemable Preferred Units 3,730,042 4,297,805 3,898,376 Potentially dilutive Series H Cumulative Redeemable Preferred Units 5,465,987 4,320,495 — Potentially dilutive Series I Cumulative Redeemable Preferred Units 1,235,063 — — 17,460,492 18,675,633 19,478,689

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Digital Realty Trust, Inc. has elected to be treated and believes that it has been organized and has operated in a manner that has enabled it to qualify as a REIT for federal income tax purposes. As a REIT, Digital Realty Trust, Inc. is generally not subject to corporate level federal income taxes on earnings distributed currently to its stockholders. Since inception, Digital Realty Trust, Inc. has distributed at least 100% of its taxable income annually and intends to do so for the tax year ending December 31, 2015 . As such, no provision for federal income taxes has been included in the accompanying consolidated financial statements for the years ended December 31, 2015 , 2014 and 2013 . 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. 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 to provide and may hold assets that REITs cannot hold directly. Income taxes for TRS entities were accrued, as necessary, for the years ended December 31, 2015 , 2014 and 2013 . 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 were accrued, as necessary, for the years ended December 31, 2015 , 2014 and 2013 . As of December 31, 2015 , we had deferred tax liabilities net of deferred tax assets of approximately $131.2 million primarily related to our foreign properties, classified in accounts payable and other accrued expenses in the consolidated balance sheet. The majority of our net deferred tax liability relates to differences between tax basis and book basis of the assets acquired in the Sentrum Portfolio acquisition during 2012. The valuation allowance at December 31, 2015 and 2014 relates primarily to certain foreign jurisdiction and Telx Acquisition net operating loss carryforwards that we do not expect to utilize, and deferred tax assets resulting from certain foreign real estate acquisition costs, which are not depreciated for tax purposes, but are deductible upon ultimate sale of the property. Given the indefinite holding period associated with these assets, realization of these deferred tax assets is not more-likely-than-not as of December 31, 2015 and 2014 . Deferred income tax assets and liabilities as of December 31, 2015 and 2014 were as follows (in thousands): 2015 2014 Gross deferred income tax assets: Net operating loss carryforwards $ 123,091 $ 74,285 Basis difference - real estate property 103,789 42,989 Basis difference - intangibles 2,002 8,817 Other - temporary differences 9,406 9,310 Total gross deferred income tax assets 238,288 135,401 Valuation allowance (35,266 ) (23,357 ) Total deferred income tax assets, net of valuation allowance 203,022 112,044 Gross deferred income tax liabilities: Basis difference - real estate property 273,155 202,499 Basis difference - intangibles 14,374 24,712 Straight-line rent 14,269 15,561 Other-temporary differences 32,420 7,220 Total gross deferred income tax liabilities 334,218 249,992 Net deferred income tax liabilities $ 131,196 $ 137,948

Equity and Accumulated Other Co

Equity and Accumulated Other Comprehensive Loss, Net	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Equity and Accumulated Other Comprehensive Loss, Net	Equity and Accumulated Other Comprehensive Loss, Net (a) Equity Distribution Agreements On June 29, 2011, Digital Realty Trust, Inc. entered into 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. To date, Digital Realty Trust, Inc. has generated net proceeds of approximately $342.7 million from the issuance of approximately 5.7 million common shares under the 2011 Equity Distribution Agreements at an average price of $60.35 per share after payment of approximately $3.5 million of commissions to the sales agents and before offering expenses. No sales were made under the program during the years ended December 31, 2015 and 2014. As of December 31, 2015, shares of common stock having an aggregate offering price of $53.8 million remained available for offer and sale under the program. (b) Redeemable Preferred Stock 7.000% Series E Cumulative Redeemable Preferred Stock On September 15, 2011, Digital Realty Trust, Inc. issued 11,500,000 shares of its 7.000% series E cumulative redeemable preferred stock, or the series E preferred stock, for net proceeds of $277.2 million , after deducting underwriting discounts and commissions and offering expenses. Dividends are cumulative on the series E preferred stock from the date of original issuance in the amount of $1.750 per share each year, which is equivalent to 7.000% of the $25.00 liquidation preference per share. Dividends on the series E preferred stock are payable quarterly in arrears. The first dividend paid on the series E preferred stock on December 30, 2011 was a pro rata dividend from and including the original issue date to and including December 31, 2011 in the amount of $0.515278 per share. The series E 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 E 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. series F cumulative redeemable, series G cumulative redeemable preferred stock, series H cumulative redeemable preferred stock and series I cumulative redeemable preferred stock. Digital Realty Trust, Inc. is not allowed to redeem the series E preferred stock before September 15, 2016, except in limited circumstances to preserve its status as a REIT and upon specified change of control transactions. On or after September 15, 2016, Digital Realty Trust, Inc. may, at its option, redeem the series E 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 E preferred stock up to but excluding the redemption date. Holders of the series E 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 Depository Receipts, or ADRs, representing such securities) is listed on the New York Stock Exchange, the NYSE Amex Equities or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series E preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series E preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the series E preferred stock) to convert some or all of the series E preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series E 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 E preferred stock dividend payment and prior to the corresponding series E 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 E preferred stock; and • 0.8378 , 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 E preferred stock. Except in connection with specified change of control transactions, the series E preferred stock is not convertible into or exchangeable for any other property or securities of Digital Realty Trust, Inc. 6.625% Series F Cumulative Redeemable Preferred Stock 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. series E cumulative redeemable, series G cumulative redeemable preferred stock, series H cumulative redeemable preferred stock and series I 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 ADRs representing such securities) is listed on the New York Stock Exchange, 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. 5.875% Series G Cumulative Redeemable Preferred Stock On April 9, 2013, Digital Realty Trust, Inc. issued an aggregate of 10,000,000 shares of its 5.875% series G cumulative redeemable preferred stock, or the series G preferred stock, for gross proceeds of $250.0 million . Dividends are cumulative on the series G preferred stock from the date of original issuance in the amount of $1.46875 per share each year, which is equivalent to 5.875% of the $25.00 liquidation preference per share. Dividends on the series G preferred stock are payable quarterly in arrears. The first dividend paid on the series G preferred stock on June 28, 2013 was a pro rata dividend from and including the original issue date to and including June 30, 2013 in the amount of $0.334550 per share. The series G 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 G preferred stock will rank senior to Digital Realty Trust, Inc. common stock and rank on parity with Digital Realty Trust, Inc.’s series E cumulative redeemable, series F cumulative redeemable preferred, series H cumulative redeemable preferred stock and series I cumulative redeemable preferred stock with respect to the payment of distributions and other amounts. Digital Realty Trust, Inc. is not allowed to redeem the series G preferred stock before April 9, 2018, except in limited circumstances to preserve its status as a REIT. On or after April 9, 2018, Digital Realty Trust, Inc. may, at its option, redeem the series G 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 G preferred stock up to but excluding the redemption date. Holders of the series G 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, the NYSE MKT, LLC, or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series G preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series G preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the series G preferred stock) to convert some or all of the series G preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series G 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 G preferred stock dividend payment and prior to the corresponding series G 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 G preferred stock; and • 0.7532 , 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 G preferred stock. Except in connection with specified change of control transactions, the series G preferred stock is not convertible into or exchangeable for any other property or securities of Digital Realty Trust, Inc. 7.375% Series H Cumulative Redeemable Preferred Stock On March 26, 2014, Digital Realty Trust, Inc. issued 12,000,000 shares of its 7.375% series H cumulative redeemable preferred stock, or the series H preferred stock, for net proceeds of approximately $289.3 million . In addition, on April 7, 2014, Digital Realty Trust, Inc. issued an additional 600,000 shares of series H preferred stock pursuant to a partial exercise of the underwriters’ over-allotment option. Also, on April 7, 2014, Digital Realty Trust, Inc. re-opened and issued an additional 2,000,000 shares of series H preferred stock. Pursuant to these issuances, Digital Realty Trust, Inc. issued a total of 14,600,000 shares of its series H preferred stock, for net proceeds of approximately $353.3 million . Dividends are cumulative on the series H preferred stock from the date of original issuance in the amount of $1.84375 per share each year, which is equivalent to 7.375% of the $25.00 liquidation preference per share. Dividends on the series H preferred stock are payable quarterly in arrears. The first dividend payable on the series H preferred stock on June 30, 2014 was a pro rata dividend from and including the original issue date to and including June 30, 2014 in the amount of $0.48655 per share. The series H 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 H preferred stock will rank senior to Digital Realty Trust, Inc. common stock and rank on parity with Digital Realty Trust, Inc.’s series E cumulative redeemable preferred stock, series F cumulative redeemable preferred stock, series G cumulative redeemable preferred stock and series I cumulative redeemable preferred stock with respect to the payment of distributions and other amounts. Digital Realty Trust, Inc. is not allowed to redeem the series H preferred stock before March 26, 2019, except in limited circumstances to preserve its status as a REIT. On or after March 26, 2019, Digital Realty Trust, Inc. may, at its option, redeem the series H 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 H preferred stock up to but excluding the redemption date. Holders of the series H 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, the NYSE MKT, LLC or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series H preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series H preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the series H preferred stock) to convert some or all of the series H preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series H preferred stock to be converted equal to the lesser of: • the quotient obtained by dividing (i) the sum of the twenty-five dollar 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 H preferred stock dividend payment and prior to the corresponding series H 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 H preferred stock; and • 0.9632 , 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 H preferred stock. Except in connection with specified change of control transactions, the series H preferred stock is not convertible into or exchangeable for any other property or securities of Digital Realty Trust, Inc. 6.350% Series I Cumulative Redeemable Preferred Stock On August 24, 2015, Digital Realty Trust, Inc. issued 10,000,000 shares of its 6.350% series I cumulative redeemable preferred stock, or the series I preferred stock, for net proceeds of approximately $242.0 million . Digital Realty Trust, Inc. used the net proceeds from the offering to fund a portion of the aggregate purchase price for the Telx Acquisition. Prior to the closing of the Telx Acquisition, Digital Realty Trust, Inc. loaned the net proceeds from the offering to the Operating Partnership. Dividends are cumulative on the series I preferred stock from the date of original issuance in the amount of $1.5875 per share each year, which is equivalent to 6.350% of the $25.00 liquidation preference per share. Dividends on the series I preferred stock are payable quarterly in arrears. The first dividend payable on the series I preferred stock on December 31, 2015 will be a pro rata dividend from and including the original issue date to and including December 31, 2015 in the amount of $0.56003 per share. The series I 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 I preferred stock will rank senior to Digital Realty Trust, Inc. common stock and rank on parity with Digital Realty Trust, Inc.’s series E preferred stock, series F preferred stock, series G preferred stock and series H preferred stock with respect to the payment of distributions and other amounts. Digital Realty Trust, Inc. is not allowed to redeem the series I preferred stock before August 24, 2020, except in limited circumstances to preserve its status as a REIT. On or after August 24, 2020, Digital Realty Trust, Inc. may, at its option, redeem the Series I 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 I Preferred Stock up to but excluding the redemption date. Holders of the series I 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, the NYSE MKT, LLC or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series I preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series I preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the Series I Preferred Stock) to convert some or all of the series I preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series I 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 I preferred Stock dividend payment and prior to the corresponding series I 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 I preferred stock; • and 0.76231 , 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 I preferred stock. Except in connection with specified change of control transactions, the series I 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 December 31, 2015 and 2014 : December 31, 2015 December 31, 2014 Number of units Percentage of total Number of units Percentage of total Digital Realty Trust, Inc. 146,384,247 98.1 % 135,626,255 97.8 % Noncontrolling interests consist of: Common units held by third parties 1,421,314 1.0 % 1,463,814 1.1 % Incentive units held by employees and directors (see note 13) 1,412,012 0.9 % 1,549,847 1.1 % 149,217,573 100.0 % 138,639,916 100.0 % 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 $192.7 million and $179.0 million based on the closing market price of Digital Realty Trust, Inc. common stock on December 31, 2015 and 2014 , respectively. The following table shows activity for the noncontrolling interests in the Operating Partnership for the years ended December 31, 2015 , 2014 and 2013 : Common Incentive Total As of December 31, 2012 1,515,814 1,335,586 2,851,400 Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1) (24,000 ) — (24,000 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) — (33,138 ) (33,138 ) Vesting of Class C Units (2007 Grant) — (19,483 ) (19,483 ) Grant of incentive units to employees and directors — 192,242 192,242 As of December 31, 2013 1,491,814 1,475,207 2,967,021 Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1) (28,000 ) — (28,000 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) — (106,073 ) (106,073 ) Cancellation of incentive units held by employees and directors — (18,773 ) (18,773 ) Grant of incentive units to employees and directors 199,486 199,486 As of December 31, 2014 1,463,814 1,549,847 3,013,661 Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1) (42,500 ) — (42,500 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) — (113,508 ) (113,508 ) Cancellation of incentive units held by employees and directors — (151,579 ) (151,579 ) Grant of incentive units to employees and directors — 127,252 127,252 As of December 31, 2015 1,421,314 1,412,012 2,833,326 (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 consolidated balance sheet of Digital Realty Trust, Inc. (e) Dividends We have declared and paid the following dividends on our common and preferred stock for the years ended December 31, 2015 , 2014 and 2013 (in thousands): Date dividend declared Dividend payable date Series D Preferred Stock Series E Preferred Stock Series F Preferred Stock Series G Preferred Stock Series H Preferred Stock Series I Preferred Stock Common February 12, 2013 March 29, 2013 $ — (1) $ 5,031 $ 3,023 $ — $ — $ — $ 100,165 (2) May 1, 2013 June 28, 2013 — 5,031 3,023 3,345 (3) — — 100,169 (2) July 23, 2013 September 30, 2013 — 5,031 3,023 3,672 — — 100,180 (2) October 23, 2013 December 31, 2013 for Preferred Stock; — 5,031 3,023 3,672 — — 100,187 (2) $ — $ 20,124 $ 12,092 $ 10,689 $ — $ — $ 400,701 February 11, 2014 March 31, 2014 $ — $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 106,743 (4) April 29, 2014 June 30, 2014 — 5,031 3,023 3,672 7,104 (5) — 112,357 (4) July 21, 2014 September 30, 2014 — 5,031 3,023 3,672 6,730 — 112,465 (4) November 4, 2014 December 31, 2014 for Preferred Stock; — 5,031 3,023 3,672 6,730 — 112,538 (4) $ — $ 20,124 $ 12,092 $ 14,688 $ 20,564 $ — $ 444,103 February 25, 2015 March 31, 2015 $ — $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ — $ 115,419 (6) May 12, 2015 June 30, 2015 — 5,031 3,023 3,672 6,730 — 115,458 (6) August 11, 2015 September 30, 2015 — 5,031 3,023 3,672 6,730 — 115,454 (6) November 12, 2015 December 31, 2015 for Preferred Stock; — 5,031 3,023 3,672 6,730 5,600 (7) 124,417 (6) $ — $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 470,748 Annual rate of dividend per share $ 1.37500 $ 1.75000 $ 1.65625 $ 1.46875 $ 1.84375 $ 1.58800 (1) Effective February 26, 2013, Digital Realty Trust, Inc. converted all outstanding shares of its series D preferred stock into shares of its common stock in accordance with the terms of the series D preferred stock. Each share of series D preferred stock was converted into 0.6360 share of common stock of Digital Realty Trust, Inc. (2) $ 3.120 annual rate of dividend per share. (3) Represents a pro rata dividend from and including the original issue date to and including June 30, 2013. (4) $3.320 annual rate of dividend per share. (5) Represents a pro rata dividend from and including the original issue date to and including June 30, 2014. (6) $3.400 annual rate of dividend per share. (7) Represents a pro rata dividend from and including the original issue date to and including December 31, 2015. 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, in the future we may also need to utilize borrowings under the global revolving credit facility to fund all or a portion distributions. (f) Accumulated Other Comprehensive Income (Loss), Net The accumulated balances for each item within other comprehensive income (loss), net are as follows (in thousands): Foreign Cash flow Accumulated Balance as of December 31, 2013 $ 11,745 $ (1,054 ) $ 10,691 Net current period change (51,312 ) (7,775 ) (59,087 ) Reclassification to interest expense from interest rate swaps — 3,350 3,350 Balance as of December 31, 2014 $ (39,567 ) $ (5,479 ) $ (45,046 ) Net current period change (50,775 ) (3,338 ) (54,113 ) Reclassification to interest expense from interest rate swaps — 2,569 2,569 Balance as of December 31, 2015 $ (90,342 ) $ (6,248 ) $ (96,590 )

Capital and Accumulated Other C

Capital and Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2015
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Capital and Accumulated Other Comprehensive Income (Loss)	Capital and Accumulated Other Comprehensive Income (Loss) (a) Redeemable Preferred Units 7.000% Series E Cumulative Redeemable Preferred Units On September 15, 2011, the Operating Partnership issued 11,500,000 units of its 7.000% series E cumulative redeemable preferred units, or series E 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 7.000% series E cumulative redeemable preferred stock, or the series E preferred stock. Distributions are cumulative on the series E preferred units from the date of original issuance in the amount of $1.750 per unit each year, which is equivalent to 7.000% of the $25.00 liquidation preference per unit. Distributions on the series E preferred units are payable quarterly in arrears. The first distribution paid on the series E preferred units on December 30, 2011 was a pro rata distribution from and including the original issue date to and including December 31, 2011 in the amount of $0.515278 per unit. The series E 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 E units in the event that the General Partner redeems the series E preferred stock. The General Partner is not allowed to redeem the series E preferred stock prior to September 15, 2016 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after September 15, 2016, the General Partner may, at its option, redeem the series E 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 E preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series E 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 F, series G, series H and series I preferred units. Except in connection with specified change of control transactions of the General Partner, the series E preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership. 6.625% Series F Cumulative 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 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 E, series G, series H and series I 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. 5.875% Series G Cumulative Redeemable Preferred Units On April 9, 2013, the Operating Partnership issued a total of 10,000,000 of its 5.875% series G cumulative redeemable preferred units, or series G preferred units, to the General Partner in conjunction with the General Partner’s issuance of an equivalent number of shares of its 5.875% series G cumulative redeemable preferred stock, or the series G preferred stock. Distributions are cumulative on the series G preferred units from the date of original issuance in the amount of $1.46875 per unit each year, which is equivalent to 5.875% of the $25.00 liquidation preference per unit. Distributions on the series G preferred units are payable quarterly in arrears. The first distribution paid on the series G preferred units on June 28, 2013 was a pro rata distribution from and including the original issue date to and including June 30, 2013 in the amount of $0.334550 per unit. The series G 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 G preferred units in the event that the General Partner redeems the series G preferred stock. The General Partner is not allowed to redeem the series G preferred stock prior to April 9, 2018 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after April 9, 2018, the General Partner may, at its option, redeem the series G 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 G preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series G preferred units will rank senior to the Operating Partnership’s common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series E, series F, series H and series I preferred units. Except in connection with specified change of control transactions of the General Partner, the series G preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership. 7.375% Series H Cumulative Redeemable Preferred Units On March 26, 2014 and April 7, 2014, the Operating Partnership issued in the aggregate a total of 14,600,000 of its 7.375% series H cumulative redeemable preferred units, or series H preferred units, to the General Partner in conjunction with the General Partner’s issuance of an equivalent number of shares of its 7.375% series H cumulative redeemable preferred stock, or the series H preferred stock. Distributions are cumulative on the series H preferred units from the date of original issuance in the amount of $1.84375 per unit each year, which is equivalent to 7.375% of the $25.00 liquidation preference per unit. Distributions on the series H preferred units are payable quarterly in arrears. The first distribution payable on the series H preferred units on June 30, 2014 was a pro rata distribution from and including the original issue date to and including June 30, 2014 in the amount of $0.48655 per unit. The series H 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 H preferred units in the event that the General Partner redeems the series H preferred stock. The General Partner is not allowed to redeem the series H preferred stock prior to March 26, 2019 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after March 26, 2019, the General Partner may, at its option, redeem the series H 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 H preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series H preferred units will rank senior to the Operating Partnership’s common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series E, series F, series G and series I preferred units. Except in connection with specified change of control transactions of the General Partner, the series H preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership. 6.350% Series I Cumulative Redeemable Preferred Units On August 24, 2015, Digital Realty Trust, Inc. (the General Partner) completed an underwritten public offering of 10,000,000 shares of series I cumulative redeemable preferred stock, or series I preferred stock, for net proceeds of approximately $242.0 million after deducting the underwriting discount. The General Partner used the net proceeds from the offering to fund a portion of the aggregate purchase price for the Telx Acquisition. Pending the closing of the Telx Acquisition , the General Partner loaned the net proceeds from the series I preferred stock offering of approximately $242.7 million to the Operating Partnership. The intercompany note was scheduled to mature on January 11, 2016 with an interest rate of 4.50% per annum. On October 8, 2015, the Operating Partnership repaid the intercompany note in full, with accrued interest, in the amount of $244.1 million . On October 13, 2015, in connection with the consummation of the Operating Partnership Merger, the Operating Partnership issued to the General Partner 10,000,000 series I cumulative redeemable preferred units, or series I preferred units, with substantially identical terms as the series I preferred stock. Distributions are cumulative on the series I preferred units from the date of original issuance in the amount of $1.5875 per unit each year, which is equivalent to 6.350% of the $25.00 liquidation preference per unit. Distributions on the series I preferred units are payable quarterly in arrears. The first distribution payable on the series I preferred units on December 31, 2015 was a pro rata distribution from and including the original issue date to and including December 31, 2015 in the amount of $0.56003 per unit. The series I 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 I preferred units in the event that the General Partner redeems the series I preferred stock. The General Partner is not allowed to redeem the series I preferred stock prior to August 24, 2020 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after August 24, 2020, the General Partner may, at its option, redeem the series I 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 I preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series I preferred units will rank senior to the Operating Partnership’s common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series E, series F, series G and series H preferred units. Except in connection with specified change of control transactions of the General Partner, the series I 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 13(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. (c) Partnership Units 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 $192.7 million and $179.0 million based on the closing market price of Digital Realty Trust, Inc.’s common stock on December 31, 2015 and 2014 , respectively. (d) Distributions All distributions on our units are at the discretion of Digital Realty Trust, Inc.’s board of directors. We have declared and paid the following distributions on our common and preferred units for the years ended December 31, 2015 , 2014 and 2013 (in thousands): Date distribution Distribution payable date Series D Preferred Units Series E Preferred Units Series F Preferred Units Series G Preferred Units Series H Preferred Units Series I Preferred Units Common February 12, 2013 March 29, 2013 $ — (1) $ 5,031 $ 3,023 $ — $ — $ — $ 102,506 (2) May 1, 2013 June 28, 2013 — 5,031 3,023 3,345 (3) — — 102,507 (2) July 23, 2013 September 30, 2013 — 5,031 3,023 3,672 — — 102,506 (2) October 23, 2013 December 31, 2013 for Preferred Units; — 5,031 3,023 3,672 — — 102,509 (2) $ — $ 20,124 $ 12,092 $ 10,689 $ — $ — $ 410,028 February 11, 2014 March 31, 2014 $ — $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 109,378 (4) April 29, 2014 June 30, 2014 — 5,031 3,023 3,672 7,104 (5) — 115,008 (4) July 21, 2014 September 30, 2014 — 5,031 3,023 3,672 6,730 — 115,012 (4) November 4, 2014 December 31, 2014 for Preferred Units; — 5,031 3,023 3,672 6,730 — 115,016 (4) $ — $ 20,124 $ 12,092 $ 14,688 $ 20,564 $ — $ 454,414 February 25, 2015 March 31, 2015 $ — $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ — $ 117,896 (6) May 12, 2015 June 30, 2015 — 5,031 3,023 3,672 6,730 — 117,938 (6) August 11, 2015 September 30, 2015 — 5,031 3,023 3,672 6,730 — 117,962 (6) November 12, 2015 December 31, 2015 for Preferred Units; — 5,031 3,023 3,672 6,730 5,600 (7) 126,827 (6) $ — $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 480,623 Annual rate of distribution per unit $1.375 $1.750 $1.656 $1.469 $1.844 $1.588 (1) Effective February 26, 2013, in connection with the conversion of the series D preferred stock by Digital Realty Trust, Inc., all of the outstanding series D preferred units were converted into common units in accordance with the terms of the series D preferred units. Each series D preferred unit was converted into 0.6360 common unit of the Operating Partnership. (2) $ 3.120 annual rate of distribution per unit. (3) Represents a pro rata distribution from and including the original issue date to and including June 30, 2013. (4) $3.320 annual rate of distribution per unit. (5) Represents a pro rata distribution from and including the original issue date to and including June 30, 2014. (6) $3.400 annual rate of distribution per unit. (7) Represents a pro rata distribution from and including the original issue date to and including December 31, 2015. (f) Accumulated Other Comprehensive Income (Loss) The accumulated balances for each item within other comprehensive income (loss) are as follows (in thousands): Foreign Cash flow Accumulated Balance as of December 31, 2013 $ 10,235 $ (1,778 ) $ 8,457 Net current period change (52,373 ) (7,936 ) (60,309 ) Reclassification to interest expense from interest rate swaps — 3,419 3,419 Balance as of December 31, 2014 $ (42,138 ) $ (6,295 ) $ (48,433 ) Net current period change (51,745 ) (3,407 ) (55,152 ) Reclassification to interest expense from interest rate swaps — 2,621 2,621 Balance as of December 31, 2015 $ (93,883 ) $ (7,081 ) $ (100,964 )

Incentive Plan

Incentive Plan	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Incentive Plan	Incentive Plan Our Amended and Restated 2004 Incentive Award Plan (as defined below) previously provided for the grant of incentive awards to employees, directors and consultants. Awards issuable under the Amended and Restated 2004 Incentive Award Plan included stock options, restricted stock, dividend equivalents, stock appreciation rights, long-term incentive units, cash performance bonuses and other incentive awards. Only employees were eligible to receive incentive stock options under the Amended and Restated 2004 Incentive Award Plan. Initially, we reserved a total of 4,474,102 shares of common stock for issuance pursuant to the Digital Realty Trust, Inc., Digital Services, Inc. and Digital Realty Trust, L.P. 2004 Incentive Award Plan (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 increased the aggregate number of shares of stock which could have been issued or transferred under the plan by 5,000,000 shares to a total of 9,474,102 shares, and provided that the maximum number of shares of stock with respect to awards granted to any one participant during a calendar year was 1,500,000 shares and the maximum amount that could have been 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 was $10.0 million . On April 28, 2014, Digital Realty Trust, Inc. held its 2014 Annual Meeting of Stockholders, or the 2014 Annual Meeting, at which the Company’s stockholders approved the Digital Realty Trust, Inc., Digital Services, Inc., and Digital Realty Trust, L.P. 2014 Incentive Award Plan (as amended, the 2014 Incentive Award Plan), which had been previously adopted by the Board of Directors and recommended to the stockholders for approval by the Company’s Board of Directors. The 2014 Incentive Award Plan became effective and replaced the Amended and Restated 2004 Incentive Award Plan as of the date of such stockholder approval. The material features of the 2014 Incentive Award Plan are described in our definitive Proxy Statement filed on March 19, 2014 in connection with the 2014 Annual Meeting. As of December 31, 2015 , 4,737,954 shares of common stock or awards convertible into or exchangeable for common stock remained available for future issuance under the 2014 Incentive Award Plan. Each long-term incentive unit and each Class D Unit issued under the 2014 Incentive Award Plan counts as one share of common stock for purposes of calculating the limit on shares that may be issued under the 2014 Incentive Award Plan and the individual award limits set forth therein. (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 (other than Class D Units), whether vested or not, will receive the same quarterly per unit distributions as Operating Partnership common units, which equal the 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 and privileges 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 any 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. Such adjustments will generally be made upon 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, 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. Below is a summary of our long-term incentive unit activity for the year ended December 31, 2015 . Unvested Long-term Incentive Units Units Weighted-Average Unvested, beginning of period 314,415 $ 59.34 Granted 127,252 66.99 Vested (143,898 ) 59.65 Cancelled or expired (16,878 ) 58.13 Unvested, end of period 280,891 62.72 Excluding the impact of our former Chief Executive Officer's equity acceleration in 2014 and subsequent cancellation in 2015, the expense recorded for the years ended December 31, 2015 , 2014 and 2013 related to long-term incentive units was approximately $5.9 million , $12.6 million and $8.9 million , respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $1.2 million , $1.7 million and $1.6 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $9.9 million and $9.3 million as of December 31, 2015 and 2014 , respectively. We expect to recognize this unearned compensation over the next 2.4 years on a weighted average basis. (b) Market Performance-Based Awards During the years ended December 31, 2015 and 2014 , the Compensation Committee of the Board of Directors of the Company approved the grant of market performance-based Class D Units of the Operating Partnership and market performance-based restricted stock units, or RSUs, covering shares of the Company’s common stock (collectively, the “awards”), under the Amended and Restated 2004 Incentive Award Plan and 2014 Incentive Plan, as applicable, to officers and employees of the Company. The awards, which were determined to contain a market condition, utilize total shareholder return, or TSR, over a three -year measurement period as the market performance metric. Awards will vest based on the Company’s TSR relative to the MSCI US REIT Index, or RMS, over a three -year market performance period, or the Market Performance Period, commencing in January 2014 or January 2015, as applicable (or, if earlier, ending on the date on which a change in control of the Company occurs), subject to continued services. Vesting with respect to the market condition is measured based on the difference between the Company’s TSR percentage and the TSR percentage of the RMS, or the RMS Relative Market Performance. In the event that the RMS Relative Market Performance during the Market Performance Period is achieved at the “threshold,” “target” or “high” level as set forth below, the awards will become vested as to the market condition with respect to the percentage of Class D units or RSUs, as applicable, set forth below: Level RMS Relative Market Performance (2014 Awards) RMS Relative Market Performance Vesting Percentage Below Threshold Level < 0 basis points < -300 basis points 0 % Threshold Level 0 basis points -300 basis points 25 % Target Level 325 basis points 100 basis points 50 % High Level > 650 basis points > 500 basis points 100 % If the RMS Relative Market Performance falls between the levels specified above, the percentage of the award that will vest with respect to the market condition will be determined using straight-line linear interpolation between such levels. Following the completion of the Market Performance Period, the 2014 awards that have satisfied the market condition, if any, will vest 50% on February 27, 2017 and 50% on February 27, 2018, subject to continued employment through each applicable vesting date. Following the completion of the Market Performance Period, the 2015 awards that have satisfied the market condition, if any, will vest 50% on February 27, 2018 and 50% on February 27, 2019, subject to continued employment through each applicable vesting date. Service-based vesting will be accelerated, in full or on a pro rata basis, in the event of a change in control, termination of employment by the Company without cause, or termination of employment by the award recipient for good reason, death, disability or retirement, in any case, prior to the completion of the Market Performance Period. However, vesting with respect to the market condition will continue to be measured based on RMS Relative Market Performance during the three -year Market Performance Period (or, in the case of a change in control, shortened Market Performance Period). The fair values of the 2014 awards and 2015 awards were measured using a Monte Carlo simulation to estimate the probability of the market vesting condition being satisfied. The Company’s achievement of the market vesting condition is contingent on its TSR over a three -year market performance period, relative to the total shareholder return of the RMS. The Monte Carlo simulation is a probabilistic technique based on the underlying theory of the Black-Scholes formula, which was run for 100,000 trials to determine the fair value of the awards. For each trial, the payoff to an award is calculated at the settlement date and is then discounted to the grant date at a risk-free interest rate. The total expected value of the awards on the grant date was determined by multiplying the average value per award over all trials by the number of awards granted. Assumptions used in the 2014 valuation include expected stock price volatility of 33 percent and a risk-free interest rate of 0.67 percent. Assumptions used in the 2015 valuation include expected stock price volatility of 24 percent and a risk-free interest rate of 1.00 percent . These valuations were performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium. As of December 31, 2015 , 1,148,991 Class D Units and 368,878 market performance-based RSUs had been awarded to our executive officers and other employees. The number of units granted reflects the maximum number of Class D units or market performance-based RSUs, as applicable, which will become vested assuming the achievement of the highest level of RMS Relative Market Performance under the awards and, in the case of the Class D units, also includes dividend equivalent units. The fair value of these awards of approximately $34.3 million will be recognized as compensation expense on a straight-line basis over the expected service period of approximately four years. The unearned compensation as of December 31, 2015 and 2014 was $17.8 million and $9.5 million, respectively, net of cancellations. As of December 31, 2015 , none of the above awards had vested. We recognized compensation expense related to these awards of approximately $4.1 million and $3.0 million in the years ended December 31, 2015 and 2014 , respectively. We capitalized amounts relating to compensation expense of employees directly engaged in construction and leasing activities of approximately $4.1 million and $1.4 million for the years ended December 31, 2015 and 2014 , respectively. If the market conditions are not met, at the end of the applicable performance periods, the unamortized amount will be recognized as an expense at that time. (c) Stock Options The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the year ended December 31, 2015 : Year Ended December 31, 2015 Shares Weighted average exercise price Options outstanding, beginning of period 80,933 $ 37.25 Exercised (29,311 ) 30.58 Options outstanding, end of period 51,622 $ 41.04 Exercisable, end of period 51,622 $ 41.04 The following table summarizes information about stock options outstanding and exercisable as of December 31, 2015 : Options outstanding and exercisable Exercise price Number outstanding Weighted average remaining contractual life (years) Weighted average exercise price Aggregate intrinsic value $33.18 4,175 0.84 $ 33.18 $ 177,187 $41.73 47,447 1.34 41.73 1,607,979 51,622 1.30 $ 41.04 $ 1,785,166 (d) Restricted Stock Below is a summary of our restricted stock activity for the year ended December 31, 2015 . Unvested Restricted Stock Shares Weighted-Average Unvested, beginning of period 302,298 $ 57.10 Granted (1) 109,780 66.90 Vested (99,988 ) 59.57 Cancelled or expired (41,376 ) 56.85 Unvested, end of period 270,714 60.20 (1) All restricted stock awards granted in 2015 are subject only to service conditions. The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock on the grant date, 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. The expense recorded for the years ended December 31, 2015 , 2014 and 2013 related to grants of restricted stock was approximately $2.5 million , $2.5 million and $2.7 million , respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $2.7 million , $2.7 million and $2.5 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $10.4 million and $10.4 million as of December 31, 2015 and 2014 , respectively. We expect to recognize this unearned compensation over the next 2.4 years on a weighted average basis. (e) 401(k) Plan We have a 401(k) plan whereby our employees may contribute a portion of their compensation to their respective retirement accounts, in an amount not to exceed the maximum allowed under the Code. The 401(k) Plan complies with Internal Revenue Service requirements as a 401(k) Safe Harbor Plan whereby matching contributions made by us are 100% vested. The aggregate cost of our contributions to the 401(k) Plan was approximately $3.4 million , $2.8 million , and $2.4 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	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, 2015, 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 December 31, 2015 or December 31, 2014. 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. We record all our interest rate swaps on the 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. 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 2015, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The fair value of these derivatives was $1.1 million and ($2.4) million at December 31, 2015 and December 31, 2014, respectively. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the year ended December 31, 2014, we recognized an increase to earnings of approximately $0.8 million related to the ineffective portion of our forward-starting swap. During the years ended December 31, 2015 and 2013, 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 December 31, 2015, we estimate that an additional $0.7 million will be reclassified as an increase to interest expense during the year ending December 31, 2016, when the hedged forecasted transactions impact earnings. As of December 31, 2015 and December 31, 2014, 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 As of As of Type of Strike Effective Date Expiration As of As of Currently-paying contracts $ 335,905 (1) $ 410,905 (1) Swap 0.717 Various Various $ (357 ) $ (241 ) 133,579 (2) 142,965 (2) Swap 0.925 July 17, 2012 April 18, 2017 1,500 669 469,484 553,870 1,143 428 Forward-starting contracts — (3) 150,000 Forward-starting Swap 2.091 July 15, 2014 July 15, 2019 — (2,837 ) Total $ 469,484 $ 703,870 $ 1,143 $ (2,409 ) (1) Represents the U.S. dollar tranche of the unsecured term loan. (2) Represents a portion of the Singapore dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.70 to 1.00 SGD as of December 31, 2015 and $0.75 to 1.00 SGD as of December 31, 2014. (3) In January 2014, we entered into a forward-starting five -year swap contract to protect the Company against adverse fluctuations in interest rates by reducing its exposure to variability in cash flows relating to interest payments on a forecasted issuance of debt. The accrual period of the swap contract was designed to match the tenor of the planned debt issuance. In the fourth quarter of 2014, changes in the forecasted transaction resulted in the discontinuation of cash flow hedge accounting. As such, changes in the fair value of the forward starting swap were recognized in earnings, within the other income (expense) line item. During 2014, the total net gain recognized on the forward-starting swap was approximately $0.8 million , and on January 13, 2015, we cash settled the forward starting swap for approximately $5.7 million , including accrued interest.

Fair Value of Instruments

Fair Value of Instruments	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Instruments	Fair Value of Instruments We disclose fair value information about all financial instruments, whether or not recognized in the 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 December 31, 2015 and December 31, 2014 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, accrued dividends and distributions, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 14, the interest rate swaps are recorded at fair value. We calculate the fair value of our mortgage loans, unsecured term loan, 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 our debt. The carrying value of our global revolving credit facility approximates fair value, due to the variability of interest rates. As of December 31, 2015 and December 31, 2014 , the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured term loan, unsecured senior notes, exchangeable senior debentures and mortgage loans were as follows (in thousands): Categorization As of December 31, 2015 As of December 31, 2014 Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Global revolving credit facility (1) Level 2 $ 967,884 $ 967,884 $ 525,951 $ 525,951 Unsecured term loan (2) Level 2 924,568 924,568 976,600 976,600 Unsecured senior notes (3)(4) Level 2 3,868,979 3,738,606 2,968,073 2,791,758 Mortgage loans (3) Level 2 313,717 303,183 399,569 378,818 $ 6,075,148 $ 5,934,241 $ 4,870,193 $ 4,673,127 (1) The carrying value of our global revolving credit facility approximates estimated fair value, due to the variability of interest rates and the stability of our credit rating. (2) The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates and the stability of our credit rating. (3) Valuations for our unsecured senior notes and mortgage loans are determined based on the expected future payments discounted at risk-adjusted rates. The 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 3.950% 2022 Notes, 3.625% 2022 Notes, 2023 Notes, 4.750% 2025 Notes and 2025 Notes are valued based on quoted market prices. (4) The carrying value of the 2015 Notes, 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 2022 Notes, 3.950% 2022 Notes, 2023 Notes and 2025 Notes are net of discount of $17.9 million and $15.6 million in the aggregate as of December 31, 2015 and December 31, 2014 , respectively.

Tenant Leases

Tenant Leases	12 Months Ended
	Dec. 31, 2015
Leases [Abstract]
Tenant Leases	Tenant Leases The future minimum lease payments to be received (excluding operating expense reimbursements) by us as of December 31, 2015 , under non-cancelable operating leases are as follows (in thousands): 2016 $ 1,379,451 2017 1,260,324 2018 1,125,712 2019 988,289 2020 769,150 Thereafter 2,948,210 Total $ 8,471,136

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) Operating Leases We have a ground lease obligation on 2010 East Centennial Circle that expires in 2082. After February 2036, rent for the remaining term of the 2010 East Centennial Circle ground lease will be determined based on a fair market value appraisal of the property and, as result, rent after February 2036 is excluded from the minimum commitment information below. We have ground leases on Paul van Vlissingenstraat 16 that expires in 2054, Chemin de l’Epinglier 2 that expires in 2074, Clonshaugh Industrial Estate I and II that expires in 2981, Manchester Technopark that expires in 2125, 29A International Business Park that expires in 2038, Gyroscoopweg 2E-2F, which has a continuous ground lease and will be adjusted on January 1, 2042, and Naritaweg 52, which has a continuous ground lease. In late 2011, we executed a lease for a new location for our headquarters, which began in May 2012, with a lease term of 12 years with an option to extend the lease for an additional five years. We also have operating leases at 111 8 th Avenue (2 nd and 6 th floors), 8100 Boone Boulevard, 111 8 th Avenue (3 rd and 7 th floors) and 410 Commerce Boulevard, which expire in June 2024, September 2017, February 2022 and December 2026, respectively. The lease at 111 8 th Avenue (2 nd and 6 th floors) has an option to extend the lease until June 2034 and the lease at 111 8 th Avenue (3 rd and 7 th floors) has an option to extend the lease until February 2032. The leases at 8100 Boone Boulevard and 410 Commerce Boulevard have no extension options. As part of the Telx Acquisition, Telx leases certain operating facilities, offices, and equipment under various lease agreements expiring during the years ending December 2016 through December 2037. We have a fully prepaid ground lease on 2055 E. Technology Circle that expires in 2083. We have a fully prepaid ground lease on Cateringweg 5 that expires in 2059. The ground lease at Naritaweg 52 has been prepaid through December 2036. Rental expense for these leases was approximately $24.6 million , $16.2 million , and $23.1 million for the years ended December 31, 2015 , 2014 and 2013 respectively. In 2013, a non-cash $10.0 million straight-line rent expense adjustment was recorded in rental property operating and maintenance expenses related to a lease amendment executed in September 2010, $7.5 million of this amount related to prior years. This adjustment was deemed to be immaterial to both the current year and prior year financial statements taken as a whole. The minimum commitment under these leases, excluding the fully prepaid ground leases, as of December 31, 2015 was as follows (in thousands): 2016 $ 54,713 2017 62,581 2018 65,417 2019 69,709 2020 72,433 Thereafter 699,590 Total $ 1,024,443 (b) Contingent liabilities As part of the 29A International Business Park asset acquisition in 2010, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined in the agreements for the acquisition. The earnout contingency expires in November 2020 . The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $35.2 million based on the exchange rate as of December 31, 2015 ). As of December 31, 2014 , $12.6 million had been accrued related to this earnout agreement, which was subsequently paid in 2015. During 2015, the remaining performance targets were achieved and the Company accrued an additional $19.4 million . The remaining earnout payments will be made in 2016 and 2020 per the terms of the earnout agreement. The amounts accrued have been discounted based on their expected payment date and capitalized to building and improvements as the original purchase was accounted for as an asset acquisition. 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 were not permitted on specifically identified expansion space within the property until April 2014. From April 2014 through April 2017, the tenant has the right of first refusal on any third party’s bona fide offer to buy the adjacent land. If the tenant exercises their option, we may either construct and lease to the tenant an additional shell building on the expansion space at a stipulated rate of return on cost or 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 Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be developed, but not currently leased, as defined in the purchase agreement for the acquisition. The initial estimate of fair value of the contingent consideration liability was approximately £56.5 million (or approximately $87.6 million based on the exchange rate as of July 11, 2012, the acquisition date). We have adjusted the contingent consideration to fair value at each reporting date with changes in fair value recognized in operating income. During the year ended December 31, 2015, we reduced the fair value by approximately £30.3 million . The adjustment was the result of an evaluation by management that no additional leases would be executed for vacant space by July 11, 2015, the contingency expiration date. The final payment on the earnout was made in August 2015. We made earnout payments of approximately £0.7 million (or approximately $1.1 million based on the exchange rates as of the date of each payment) during the year ended December 31, 2015 . During the year ended December 31, 2014 , we made earnout payments of approximately £6.2 million (or approximately $10.3 million based on the exchange rates as of the date of each payment). From the acquisition date through December 31, 2015 , we have made earnout payments of approximately £23.8 million (or approximately $37.2 million based on the exchange rates as of the date of each payment). The earn-out contingency expired in July 2015. The change in fair value of contingent consideration for Sentrum was recorded as a reduction to operating expense of approximately $43.0 million , $8.4 million and $1.8 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. (c) Construction Commitments 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 December 31, 2015 , we had open commitments related to construction contracts of approximately $157.6 million . (d) Legal Proceedings Although the Company is involved in legal proceedings arising in the ordinary course of business, as of December 31, 2015 , the Company is not currently a party to any legal proceedings nor, to its knowledge, is any legal proceeding threatened against it that it believes would have a material adverse effect on its financial position, results of operations or liquidity.

Quarterly Financial Information

Quarterly Financial Information (Digital Realty Trust, Inc.)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (Digital Realty Trust, Inc.) (unaudited)	Quarterly Financial Information (Digital Realty Trust, Inc.) (unaudited) The tables below reflect selected quarterly information for the years ended December 31, 2015 and 2014 . Certain amounts have been reclassified to conform to the current year presentation (in thousands, except per share amounts). Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 500,443 $ 435,989 $ 420,295 $ 406,609 Net income (loss) (16,573 ) 57,842 137,997 122,325 Net income (loss) attributable to Digital Realty Trust, Inc. (15,983 ) 56,978 135,511 120,183 Preferred stock dividends 24,056 18,456 18,456 18,455 Net income (loss) available to common stockholders (40,039 ) 38,522 117,055 101,728 Basic net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 412,216 $ 412,186 $ 401,446 $ 390,590 Net income (loss) (34,795 ) 130,161 61,332 46,717 Net income (loss) attributable to (33,813 ) 127,769 60,339 45,912 Preferred stock dividends 18,455 18,455 18,829 11,726 Net income (loss) available to common stockholders (52,268 ) 109,314 41,510 34,186 Basic net income (loss) per share available to $ (0.39 ) $ 0.81 $ 0.31 $ 0.27 Diluted net income (loss) per share available to $ (0.39 ) $ 0.80 $ 0.31 $ 0.26

Quarterly Financial Informati27

Quarterly Financial Information (Digital Realty Trust, L.P.)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information [Line Items]
Quarterly Financial Information (Digital Realty Trust, L.P.) (unaudited)	Quarterly Financial Information (Digital Realty Trust, Inc.) (unaudited) The tables below reflect selected quarterly information for the years ended December 31, 2015 and 2014 . Certain amounts have been reclassified to conform to the current year presentation (in thousands, except per share amounts). Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 500,443 $ 435,989 $ 420,295 $ 406,609 Net income (loss) (16,573 ) 57,842 137,997 122,325 Net income (loss) attributable to Digital Realty Trust, Inc. (15,983 ) 56,978 135,511 120,183 Preferred stock dividends 24,056 18,456 18,456 18,455 Net income (loss) available to common stockholders (40,039 ) 38,522 117,055 101,728 Basic net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 412,216 $ 412,186 $ 401,446 $ 390,590 Net income (loss) (34,795 ) 130,161 61,332 46,717 Net income (loss) attributable to (33,813 ) 127,769 60,339 45,912 Preferred stock dividends 18,455 18,455 18,829 11,726 Net income (loss) available to common stockholders (52,268 ) 109,314 41,510 34,186 Basic net income (loss) per share available to $ (0.39 ) $ 0.81 $ 0.31 $ 0.27 Diluted net income (loss) per share available to $ (0.39 ) $ 0.80 $ 0.31 $ 0.26
Digital Realty Trust, L.P.
Quarterly Financial Information [Line Items]
Quarterly Financial Information (Digital Realty Trust, L.P.) (unaudited)	Quarterly Financial Information (Digital Realty Trust, L.P.) (unaudited) The tables below reflect selected quarterly information for the years ended December 31, 2015 and 2014 . Certain amounts have been reclassified to conform to the current year presentation (in thousands, except per unit amounts). Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 500,443 $ 435,989 $ 420,295 $ 406,609 Net income (16,785 ) 56,689 137,997 122,325 Net income attributable to Digital Realty Trust, L.P. (16,903 ) 56,572 137,888 122,209 Preferred unit distributions 24,056 18,456 18,456 18,455 Net income available to common unitholders (40,959 ) 38,116 119,432 103,754 Basic net income per unit available to common unitholders $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income per unit available to common unitholders $ (0.28 ) $ 0.27 $ 0.86 $ 0.75 Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 412,216 $ 412,186 $ 401,446 $ 390,590 Net income (34,795 ) 130,161 61,332 46,717 Net income attributable to Digital Realty Trust, L.P. (34,908 ) 130,041 61,212 46,605 Preferred unit distributions 18,455 18,455 18,829 11,726 Net income available to common unitholders (53,363 ) 111,586 42,383 34,879 Basic net income per unit available to common unitholders $ (0.39 ) $ 0.81 $ 0.31 $ 0.27 Diluted net income per unit available to common unitholders $ (0.39 ) $ 0.80 $ 0.31 $ 0.26

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In addition to other subsequent events discussed elsewhere within the footnotes, the following subsequent events warranted disclosure: On January 21, 2016, the operating partnership closed on the sale of 47700 Kato Road and 1055 Page Avenue, two adjacent non-data center properties totaling 199,000 square feet in Fremont, California for $37.5 million . The sale generated net proceeds of $35.8 million , and we will recognize a gain on the sale of approximately $1.2 million in the first quarter of 2016. The properties were identified as held for sale as of December 31, 2015. 47700 Kato Road and 1055 Page Avenue were not a significant component of our U.S. portfolio nor does the sale represent a significant shift in the Company's strategy. On February 17, 2016, the Company declared the following dividends per share. The Operating Partnership will make an equivalent distribution per unit. Share / Unit Class Series E Preferred Stock and Unit Series F Preferred Stock and Unit Series G Preferred Stock and Unit Series H Series I Preferred Stock and Unit Common stock and common unit Dividend and distribution amount $ 0.437500 $ 0.414063 $ 0.367188 $ 0.460938 $ 0.396875 $ 0.880000 Dividend and distribution payable date March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016 Dividend and distribution payable to holders of record on March 15, 2016 March 15, 2016 March 15, 2016 March 15, 2016 March 15, 2016 March 15, 2016 Annual equivalent rate of dividend and distribution $ 1.750 $ 1.656 $ 1.469 $ 1.844 $ 1.588 $ 3.520

Schedule III Properties And Acc

Schedule III Properties And Accumulated Depreciation	12 Months Ended
	Dec. 31, 2015
Properties And Accumulated Depreciation	Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 36 NE 2nd Street Miami — 1,942 — 24,184 11,693 — 1,942 — 35,877 37,819 (13,839 ) 2002 (A) 2323 Bryan Street Dallas — 1,838 — 77,604 48,808 — 1,838 — 126,412 128,250 (55,285 ) 2002 (A) 300 Boulevard East New York — 5,140 — 48,526 61,457 — 5,140 — 109,983 115,123 (56,085 ) 2002 (A) 2334 Lundy Place Silicon Valley 36,714 3,607 — 23,008 67 — 3,607 — 23,075 26,682 (9,201 ) 2002 (A) 34551 Ardenwood Boulevard 1-4 Silicon Valley 50,477 15,330 — 32,419 9,076 — 15,330 — 41,495 56,825 (15,684 ) 2003 (A) 2440 Marsh Lane Dallas — 1,477 — 10,330 71,942 — 1,477 — 82,272 83,749 (48,495 ) 2003 (A) 2010 East Centennial Circle Phoenix — — 1,477 16,472 57 — — 1,322 16,529 17,851 (6,443 ) 2003 (A) 375 Riverside Parkway Atlanta — 1,250 — 11,578 31,507 — 1,250 — 43,085 44,335 (23,110 ) 2003 (A) 4849 Alpha Road Dallas — 2,983 — 10,650 42,867 — 2,983 — 53,517 56,500 (21,289 ) 2004 (A) 600 West Seventh Street Los Angeles 46,000 18,478 — 50,824 55,587 — 18,478 — 106,411 124,889 (53,335 ) 2004 (A) 2045 & 2055 LaFayette Street Silicon Valley 61,437 6,065 — 43,817 20 — 6,065 — 43,837 49,902 (16,221 ) 2004 (A) 11830 Webb Chapel Road Dallas — 5,881 — 34,473 2,102 — 5,881 — 36,575 42,456 (14,300 ) 2004 (A) 150 South First Street Silicon Valley 48,484 2,068 — 29,214 1,495 — 2,068 — 30,709 32,777 (10,742 ) 2004 (A) 200 Paul Avenue San Francisco — 14,427 — 75,777 81,780 — 14,427 — 157,557 171,984 (64,231 ) 2004 (A) 1100 Space Park Drive Silicon Valley 50,423 5,130 — 18,206 34,478 — 5,130 — 52,684 57,814 (26,014 ) 2004 (A) 3015 Winona Avenue Los Angeles — 6,534 — 8,356 6 — 6,534 — 8,362 14,896 (3,280 ) 2004 (A) 1125 Energy Park Drive Minneapolis — 2,775 — 10,761 (5,701 ) (5,900 ) 2,775 — 5,060 7,835 (3,890 ) 2005 (A) 350 East Cermak Road Chicago — 8,466 — 103,232 225,410 — 8,620 — 328,488 337,108 (164,451 ) 2005 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 8534 Concord Center Drive Denver — 2,181 — 11,561 121 — 2,181 — 11,682 13,863 (4,599 ) 2005 (A) 2401 Walsh Street Silicon Valley — 5,775 — 19,267 37 — 5,775 — 19,304 25,079 (6,933 ) 2005 (A) 2403 Walsh Street Silicon Valley — 5,514 — 11,695 48 — 5,514 — 11,743 17,257 (4,500 ) 2005 (A) 200 North Nash Street Los Angeles — 4,562 — 12,503 232 — 4,562 — 12,735 17,297 (5,313 ) 2005 (A) 731 East Trade Street Charlotte 3,847 1,748 — 5,727 249 — 1,748 — 5,976 7,724 (2,043 ) 2005 (A) 113 North Myers Charlotte — 1,098 — 3,127 2,059 — 1,098 — 5,186 6,284 (2,013 ) 2005 (A) 125 North Myers Charlotte — 1,271 — 3,738 6,175 — 1,271 — 9,913 11,184 (6,519 ) 2005 (A) Paul van Vlissingenstraat 16 Amsterdam — — — 15,255 23,791 — — — 39,046 39,046 (12,872 ) 2005 (A) 600-780 S. Federal Chicago — 7,849 — 27,881 33,536 — 7,849 — 61,417 69,266 (13,488 ) 2005 (A) 115 Second Avenue Boston — 1,691 — 12,569 11,556 — 1,691 — 24,125 25,816 (12,957 ) 2005 (A) Chemin de l’Epinglier 2 Geneva — — — 20,071 (1,584 ) — — — 18,487 18,487 (6,300 ) 2005 (A) 7500 Metro Center Drive Austin — 1,177 — 4,877 67,500 — 1,177 — 72,377 73,554 (5,775 ) 2005 (A) 3 Corporate Place New York — 2,124 — 12,678 127,334 — 2,124 — 140,012 142,136 (67,989 ) 2005 (A) 4025 Midway Road Dallas — 2,196 — 14,037 28,627 — 2,196 — 42,664 44,860 (24,747 ) 2006 (A) Clonshaugh Industrial Estate Dublin — — 1,444 5,569 2,625 — — 90 8,194 8,284 (4,793 ) 2006 (A) 6800 Millcreek Drive Toronto — 1,657 — 11,352 2,279 — 1,657 — 13,631 15,288 (5,337 ) 2006 (A) 101 Aquila Way Atlanta — 1,480 — 34,797 52 — 1,480 — 34,849 36,329 (11,827 ) 2006 (A) 12001 North Freeway Houston — 6,965 — 23,492 145,311 — 6,965 — 168,803 175,768 (34,400 ) 2006 (A) 120 E Van Buren Phoenix — 4,524 — 157,822 106,684 — 4,524 — 264,506 269,030 (101,945 ) 2006 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: Gyroscoopweg 2E-2F Amsterdam — — — 13,450 (2,011 ) — — — 11,439 11,439 (3,978 ) 2006 (A) Clonshaugh Industrial Estate II Dublin — — — — 75,735 — — — 75,735 75,735 (32,367 ) 2006 (C) 600 Winter Street Boston — 1,429 — 6,228 456 — 1,429 — 6,684 8,113 (1,898 ) 2006 (A) 2300 NW 89th Place Miami — 1,022 — 3,767 19 — 1,022 — 3,786 4,808 (1,450 ) 2006 (A) 2055 East Technology Circle Phoenix — — — 8,519 27,522 — — — 36,041 36,041 (21,882 ) 2006 (A) 114 Rue Ambroise Croizat Paris — 12,261 — 34,051 65,181 — 9,533 — 101,960 111,493 (39,419 ) 2006 (A) Unit 9, Blanchardstown Corporate Park Dublin — 1,927 — 40,024 14,850 — 1,573 — 55,228 56,801 (17,215 ) 2006 (A) 111 8th Avenue New York — — — 17,688 16,993 — — — 34,681 34,681 (27,068 ) 2006 (A) 8100 Boone Boulevard N. Virginia — — — 158 1,206 — — — 1,364 1,364 (1,119 ) 2006 (A) 21110 Ridgetop Circle N. Virginia — 2,934 — 14,311 1,307 — 2,934 — 15,618 18,552 (4,756 ) 2007 (A) 3011 Lafayette Street Silicon Valley — 3,354 — 10,305 49,187 — 3,354 — 59,492 62,846 (40,001 ) 2007 (A) 44470 Chilum Place N. Virginia — 3,531 — 37,360 1 — 3,531 — 37,361 40,892 (9,065 ) 2007 (A) 43881 Devin Shafron Drive N. Virginia — 4,653 — 23,631 91,427 — 4,653 — 115,058 119,711 (71,066 ) 2007 (A) 43831 Devin Shafron Drive N. Virginia — 3,027 — 16,247 1,229 — 3,027 — 17,476 20,503 (4,541 ) 2007 (A) 43791 Devin Shafron Drive N. Virginia — 3,490 — 17,444 77,073 — 3,490 — 94,517 98,007 (38,282 ) 2007 (A) Mundells Roundabout London — 31,354 — — 53,426 — 23,489 — 61,291 84,780 (11,536 ) 2007 (C) 1 Savvis Parkway St. Louis — 3,301 — 20,639 1,125 — 3,301 — 21,764 25,065 (5,553 ) 2007 (A) 1500 Space Park Drive Silicon Valley — 6,732 — 6,325 46,078 — 4,106 — 55,029 59,135 (40,103 ) 2007 (A) Cressex 1 London — 3,629 — 9,036 23,810 — 2,833 — 33,642 36,475 (16,677 ) 2007 (A) Naritaweg 52 Amsterdam — — 1,192 23,441 (5,812 ) — — 888 17,629 18,517 (4,319 ) 2007 (A) 1 St. Anne’s Boulevard London — 1,490 — 1,045 (534 ) — 1,128 — 873 2,001 (178 ) 2007 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 2 St. Anne’s Boulevard London — 922 — 695 37,874 — 751 — 38,740 39,491 (4,255 ) 2007 (A) 3 St. Anne’s Boulevard London — 22,079 — 16,351 96,759 — 16,563 — 118,626 135,189 (42,834 ) 2007 (A) 365 South Randolphville Road New York — 3,019 — 17,404 275,759 — 3,019 — 293,163 296,182 (69,056 ) 2008 (A) 701 & 717 Leonard Street Dallas — 2,165 — 9,934 826 — 2,165 — 10,760 12,925 (2,204 ) 2008 (A) Manchester Technopark Manchester — — — 23,918 (5,802 ) — — — 18,116 18,116 (3,919 ) 2008 (A) 1201 Comstock Street Silicon Valley — 2,093 — 1,606 26,684 — 3,398 — 26,985 30,383 (14,210 ) 2008 (A) 1550 Space Park Drive Silicon Valley — 2,301 — 766 1,747 — 1,929 — 2,885 4,814 — 2008 (A) 1525 Comstock Street Silicon Valley — 2,293 — 16,216 30,616 — 2,061 — 47,064 49,125 (23,287 ) 2008 (A) 43830 Devin Shafron Drive N. Virginia — 5,509 — — 73,468 — 5,509 — 73,468 78,977 (23,394 ) 2009 (C) 1232 Alma Road Dallas — 2,267 — 3,740 63,830 — 2,266 — 67,571 69,837 (26,467 ) 2009 (A) 900 Quality Way Dallas — 1,446 — 1,659 69,165 — 1,446 — 70,824 72,270 (10,008 ) 2009 (A) 1400 N. Bowser Road Dallas — 2,041 — 3,389 6,181 — 3,636 — 7,975 11,611 — 2009 (A) 1301 International Parkway Dallas — 333 — 344 76,746 — 2,131 — 75,292 77,423 (238 ) 2009 (A) 908 Quality Way Dallas — 6,730 — 4,493 13,693 — 2,067 — 22,849 24,916 (13,011 ) 2009 (A) 904 Quality Way Dallas — 760 — 744 6,814 — 1,151 — 7,167 8,318 (624 ) 2009 (A) 905 Security Row Dallas — — — — — — — — — — — 2009 (A) 1202 Alma Road Dallas — — — — 44,349 — 1,921 — 42,428 44,349 (8,715 ) 2009 (C) 1350 Duane Silicon Valley — 7,081 — 69,817 61 — 7,081 — 69,878 76,959 (11,175 ) 2009 (A) 45901 & 45845 Nokes Boulevard N. Virginia — 3,437 — 28,785 450 — 3,437 — 29,235 32,672 (4,913 ) 2009 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 21561 & 21571 Beaumeade Circle N. Virginia — 3,966 — 24,211 45 — 3,966 — 24,256 28,222 (3,767 ) 2009 (A) 60 & 80 Merritt New York — 3,418 — 71,477 92,311 — 3,418 — 163,788 167,206 (22,425 ) 2010 (A) 55 Middlesex Boston — 9,975 — 68,363 8,170 — 9,975 — 76,533 86,508 (15,970 ) 2010 (A) 128 First Avenue Boston — 5,465 — 185,348 30,328 — 5,465 — 215,676 221,141 (44,598 ) 2010 (A) Cateringweg 5 Amsterdam — — 3,518 3,517 37,032 — — 3,122 40,549 43,671 (4,959 ) 2010 (A) 1725 Comstock Street Silicon Valley — 3,274 — 6,567 37,900 — 3,274 — 44,467 47,741 (15,944 ) 2010 (A) 3015 and 3115 Alfred Street Silicon Valley — 6,533 — 3,725 55,645 — 6,562 — 59,341 65,903 (17,930 ) 2010 (A) 365 Main Street San Francisco — 22,854 — 158,709 22,737 — 22,854 — 181,446 204,300 (32,439 ) 2010 (A) 720 2nd Street San Francisco — 3,884 — 116,861 9,594 — 3,884 — 126,455 130,339 (20,522 ) 2010 (A) 2260 East El Segundo Los Angeles — 11,053 — 51,397 13,205 — 11,053 — 64,602 75,655 (12,276 ) 2010 (A) 2121 South Price Road Phoenix — 7,335 — 238,452 199,624 — 7,335 — 438,076 445,411 (67,279 ) 2010 (A) 4030 La Fayette N. Virginia — 2,492 — 16,912 3,517 — 2,492 — 20,429 22,921 (3,788 ) 2010 (A) 4040 La Fayette N. Virginia — 1,246 — 4,267 24,510 — 1,246 — 28,777 30,023 (1,773 ) 2010 (A) 4050 La Fayette N. Virginia — 1,246 — 4,371 35,017 — 1,246 — 39,388 40,634 (13,601 ) 2010 (A) 800 Central Expressway Silicon Valley — 8,976 — 18,155 130,755 — 8,294 — 149,592 157,886 (10,502 ) 2010 (A) 29A International Business Park Singapore — — — 137,545 190,975 — — — 328,520 328,520 (56,103 ) 2010 (A) Loudoun Parkway North N. Virginia — 17,300 — — 495,564 — 17,746 — 495,118 512,864 (32,184 ) 2011 (C) 1-23 Templar Road Sydney — 11,173 — — 62,906 — 7,181 — 66,898 74,079 (6,681 ) 2011 (C) Fountain Court London — 7,544 — 12,506 95,637 — 7,217 — 108,470 115,687 (9,995 ) 2011 (C) 98 Radnor Drive Melbourne — 4,467 — — 91,340 — 3,215 — 92,592 95,807 (10,456 ) 2011 (C) Cabot Street Boston — 2,386 — — 58,806 — 2,427 — 58,765 61,192 (3,634 ) 2011 (C) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 3825 NW Aloclek Place Portland — 1,689 — — 57,201 — 1,689 — 57,201 58,890 (10,724 ) 2011 (C) 11085 Sun Center Drive Sacramento — 2,490 — 21,509 1 — 2,490 — 21,510 24,000 (2,633 ) 2011 (A) Profile Park Dublin — 6,288 — — 38,565 — 5,350 — 39,503 44,853 (530 ) 2011 (C) 1506 Moran Road N. Virginia — 1,527 — — 17,185 — 1,115 — 17,597 18,712 (1,348 ) 2011 (A) 760 Doug Davis Drive Atlanta — 4,837 — 53,551 2,807 — 4,837 — 56,358 61,195 (7,712 ) 2011 (A) 360 Spear Street San Francisco — 19,828 — 56,733 (854 ) — 19,828 — 55,879 75,707 (8,397 ) 2011 (A) 2501 S. State Hwy 121 Dallas — 23,137 — 93,943 14,828 — 23,137 — 108,771 131,908 (17,611 ) 2012 (A) 9333, 9355, 9377 Grand Avenue Chicago — 5,686 — 14,515 259,630 — 5,960 — 273,871 279,831 (17,681 ) 2012 (A) 8025 North Interstate 35 Austin 5,801 2,920 — 8,512 184 — 2,920 — 8,696 11,616 (1,095 ) 2012 (A) 850 E Collins Dallas — 1,614 — — 81,875 — 1,614 — 81,875 83,489 (6,925 ) 2012 (C) 950 E Collins Dallas — 1,546 — — 74,994 — 1,546 — 74,994 76,540 (3,621 ) 2012 (C) 400 S. Akard Dallas — 10,075 — 62,730 1,690 — 10,075 — 64,420 74,495 (6,066 ) 2012 (A) 410 Commerce Boulevard New York — — — — 29,747 — — — 29,747 29,747 (5,625 ) 2012 (C) Unit B Prologis Park London — 1,683 — 104,728 (6,565 ) — 1,552 — 98,294 99,846 (9,903 ) 2012 (A) The Chess Building London — — 7,355 219,273 9,773 — — 7,217 229,046 236,263 (22,462 ) 2012 (A) Unit 21 Goldsworth Park London — 17,334 — 928,129 (26,882 ) — 15,800 — 902,781 918,581 (89,393 ) 2012 (A) 11900 East Cornell Denver — 3,352 — 80,640 1,758 — 3,352 — 82,398 85,750 (8,837 ) 2012 (A) 701 Union Boulevard New York — 10,045 — 6,755 27,878 — 10,045 — 34,633 44,678 — 2012 (A) 23 Waterloo Road Sydney — 7,112 — 3,868 (3,284 ) — 4,985 — 2,711 7,696 (244 ) 2012 (A) 1 Rue Jean-Pierre Paris — 9,621 — 35,825 (8,029 ) — 7,921 — 29,496 37,417 (3,209 ) 2012 (A) Liet-dit le Christ de Saclay Paris — 3,402 — 3,090 (1,147 ) — 2,801 — 2,544 5,345 (357 ) 2012 (A) 127 Rue de Paris Paris — 8,637 — 10,838 (3,441 ) — 7,111 — 8,923 16,034 (1,208 ) 2012 (A) 17201 Waterview Parkway Dallas — 2,070 — 6,409 (1 ) — 2,070 — 6,408 8,478 (615 ) 2013 (A) 1900 S. Price Road Phoenix — 5,380 — 16,975 320 — 5,380 — 17,295 22,675 (1,609 ) 2013 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total 371 Gough Road Toronto — 7,394 677 67,316 — 5,700 — 69,687 75,387 (2,126 ) 2013 (A) 1500 Towerview Road Minneapolis — 10,190 20,054 3,168 — 10,190 — 23,222 33,412 (2,124 ) 2013 (A) Principal Park London — 11,837 — 114,293 — 13,886 — 112,244 126,130 (1,991 ) 2013 (C) MetCenter Business Park Austin — 8,604 20,314 364 — 8,604 — 20,678 29,282 (2,208 ) 2013 (A) Liverpoolweg 10 Amsterdam — 733 3,122 7,085 — 611 — 10,329 10,940 (775 ) 2013 (A) DePresident Amsterdam — 6,737 — 6,354 — 6,774 — 6,317 13,091 — 2013 (C) Saito Industrial Park Osaka — 9,649 — 1,744 — 8,321 — 3,072 11,393 — 2013 (C) Crawley 2 London — 24,305 — 1,741 — 22,020 — 4,026 26,046 (97 ) 2014 (C) Digital Deer Park 3 Melbourne — 1,600 — — 29 — 1,629 — — 1,629 — 2015 (C) 3 Loyang Way Singapore — — — — 77,190 — — — 77,190 77,190 — 2015 (C) Digital Loudoun 3 N. Virginia — 43,000 — — 1,445 — 44,155 — 290 44,445 (10 ) 2015 (C) Digital Frankfurt Frankfurt — 5,543 — — 1,121 — 6,664 — — 6,664 — 2015 (C) 56 Marietta Street Atlanta — 1,700 — 211,397 1,116 — 1,700 — 212,513 214,213 (2,136 ) 2015 (A) 2 Peekay Drive New York — — — 115,439 3,102 — — — 118,541 118,541 (1,575 ) 2015 (A) 100 Delawanna Avenue New York — 3,600 — 85,438 682 — 3,600 — 86,120 89,720 (742 ) 2015 (A) 60 Hudson Street New York — — — 32,280 945 — — — 33,225 33,225 (715 ) 2015 (A) 32 Avenue of the Americas New York — — — 30,980 465 — — — 31,445 31,445 (514 ) 2015 (A) 3433 S 120th Place Seattle — — — 11,688 240 — — — 11,928 11,928 (359 ) 2015 (A) 8435 Stemmons Freeway Dallas — — — 5,023 121 — — — 5,144 5,144 (148 ) 2015 (A) 2625 Walsh Avenue Silicon Valley — — — 4,276 536 — — — 4,812 4,812 (72 ) 2015 (A) 111 8th Avenue - Telx New York (3 ) — — — 42,454 818 — — 43,272 43,272 (1,084 ) 2015 (A) 350 East Cermak Road - Telx Chicago (3 ) — — — 13,933 405 — — — 14,338 14,338 (303 ) 2015 (A) 200 Paul Avenue - Telx San Francisco (3 ) — — — 6,719 243 — — — 6,962 6,962 (142 ) 2015 (A) 2323 Bryan Street - Telx Dallas (3 ) — — — 5,191 157 — — — 5,348 5,348 (108 ) 2015 (A) 600 W. 7th Street - Telx Los Angeles (3 ) — — — 3,689 101 — — — 3,790 3,790 (89 ) 2015 (A) 3825 NW Aloclek Place - Telx Portland (3 ) — — — 3,131 137 — — — 3,268 3,268 (39 ) 2015 (A) 120 E. Van Buren Street - Telx Phoenix (3 ) — — — 2,848 (351 ) — — — 2,497 2,497 (53 ) 2015 (A) 36 NE 2nd Street - Telx Miami (3 ) — — — 1,842 36 — — — 1,878 1,878 (42 ) 2015 (A) 600-780 S. Federal Street - Telx Chicago (3 ) — — — 1,815 30 — — — 1,845 1,845 (39 ) 2015 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total 113 N. Myers Street - Telx Charlotte (3 ) — — — 476 27 — — — 503 503 (7 ) 2015 (A) 1100 Space Park Drive - Telx Silicon Valley (3 ) — — — 352 11 — — — 363 363 (10 ) 2015 (A) 300 Boulevard East - Telx New York (3 ) — — — 197 19 — — — 216 216 (5 ) 2015 (A) Other — 8,298 — 14,839 — — — 23,137 23,137 (8,096 ) 303,183 731,863 14,986 5,014,720 5,156,151 (5,900 ) 689,573 12,639 10,213,161 10,915,373 (2,251,268 ) (1) The balance shown includes an unamortized premium of $427 . (2) The balance shown includes an unamortized premium of $12 . (3) Represents properties acquired in the Telx Acquisition. (1) Tax Cost The aggregate gross cost of the Company’s properties for federal income tax purposes approximated $11.7 billion (unaudited) as of December 31, 2015. (2) Historical Cost and Accumulated Depreciation and Amortization The following table reconciles the historical cost of the Company’s properties for financial reporting purposes for each of the years in the three-year period ended December 31, 2015. Year Ended December 31, 2015 2014 2013 Balance, beginning of year $ 9,982,612 $ 9,879,578 $ 8,742,519 Additions during period (acquisitions and improvements) 1,133,263 560,307 1,345,046 Deductions during period (dispositions, impairments and assets held for sale) (200,502 ) (457,273 ) (207,987 ) Balance, end of year $ 10,915,373 $ 9,982,612 $ 9,879,578 The following table reconciles accumulated depreciation and amortization of the Company’s properties for financial reporting purposes for each of the years in the three-year period ended December 31, 2015. Year Ended December 31, 2015 2014 2013 Balance, beginning of year $ 1,874,054 $ 1,565,996 $ 1,206,017 Additions during period (depreciation and amortization expense) 429,057 413,652 386,935 Deductions during period (dispositions and assets held for sale) (51,843 ) (105,594 ) (26,956 ) Balance, end of year $ 2,251,268 $ 1,874,054 $ 1,565,996 Schedules other than those listed above are omitted because they are not applicable or the information required is included in the consolidated financial statements or the notes thereto.
Digital Realty Trust, L.P.
Properties And Accumulated Depreciation	Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 36 NE 2nd Street Miami — 1,942 — 24,184 11,693 — 1,942 — 35,877 37,819 (13,839 ) 2002 (A) 2323 Bryan Street Dallas — 1,838 — 77,604 48,808 — 1,838 — 126,412 128,250 (55,285 ) 2002 (A) 300 Boulevard East New York — 5,140 — 48,526 61,457 — 5,140 — 109,983 115,123 (56,085 ) 2002 (A) 2334 Lundy Place Silicon Valley 36,714 3,607 — 23,008 67 — 3,607 — 23,075 26,682 (9,201 ) 2002 (A) 34551 Ardenwood Boulevard 1-4 Silicon Valley 50,477 15,330 — 32,419 9,076 — 15,330 — 41,495 56,825 (15,684 ) 2003 (A) 2440 Marsh Lane Dallas — 1,477 — 10,330 71,942 — 1,477 — 82,272 83,749 (48,495 ) 2003 (A) 2010 East Centennial Circle Phoenix — — 1,477 16,472 57 — — 1,322 16,529 17,851 (6,443 ) 2003 (A) 375 Riverside Parkway Atlanta — 1,250 — 11,578 31,507 — 1,250 — 43,085 44,335 (23,110 ) 2003 (A) 4849 Alpha Road Dallas — 2,983 — 10,650 42,867 — 2,983 — 53,517 56,500 (21,289 ) 2004 (A) 600 West Seventh Street Los Angeles 46,000 18,478 — 50,824 55,587 — 18,478 — 106,411 124,889 (53,335 ) 2004 (A) 2045 & 2055 LaFayette Street Silicon Valley 61,437 6,065 — 43,817 20 — 6,065 — 43,837 49,902 (16,221 ) 2004 (A) 11830 Webb Chapel Road Dallas — 5,881 — 34,473 2,102 — 5,881 — 36,575 42,456 (14,300 ) 2004 (A) 150 South First Street Silicon Valley 48,484 2,068 — 29,214 1,495 — 2,068 — 30,709 32,777 (10,742 ) 2004 (A) 200 Paul Avenue San Francisco — 14,427 — 75,777 81,780 — 14,427 — 157,557 171,984 (64,231 ) 2004 (A) 1100 Space Park Drive Silicon Valley 50,423 5,130 — 18,206 34,478 — 5,130 — 52,684 57,814 (26,014 ) 2004 (A) 3015 Winona Avenue Los Angeles — 6,534 — 8,356 6 — 6,534 — 8,362 14,896 (3,280 ) 2004 (A) 1125 Energy Park Drive Minneapolis — 2,775 — 10,761 (5,701 ) (5,900 ) 2,775 — 5,060 7,835 (3,890 ) 2005 (A) 350 East Cermak Road Chicago — 8,466 — 103,232 225,410 — 8,620 — 328,488 337,108 (164,451 ) 2005 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 8534 Concord Center Drive Denver — 2,181 — 11,561 121 — 2,181 — 11,682 13,863 (4,599 ) 2005 (A) 2401 Walsh Street Silicon Valley — 5,775 — 19,267 37 — 5,775 — 19,304 25,079 (6,933 ) 2005 (A) 2403 Walsh Street Silicon Valley — 5,514 — 11,695 48 — 5,514 — 11,743 17,257 (4,500 ) 2005 (A) 200 North Nash Street Los Angeles — 4,562 — 12,503 232 — 4,562 — 12,735 17,297 (5,313 ) 2005 (A) 731 East Trade Street Charlotte 3,847 1,748 — 5,727 249 — 1,748 — 5,976 7,724 (2,043 ) 2005 (A) 113 North Myers Charlotte — 1,098 — 3,127 2,059 — 1,098 — 5,186 6,284 (2,013 ) 2005 (A) 125 North Myers Charlotte — 1,271 — 3,738 6,175 — 1,271 — 9,913 11,184 (6,519 ) 2005 (A) Paul van Vlissingenstraat 16 Amsterdam — — — 15,255 23,791 — — — 39,046 39,046 (12,872 ) 2005 (A) 600-780 S. Federal Chicago — 7,849 — 27,881 33,536 — 7,849 — 61,417 69,266 (13,488 ) 2005 (A) 115 Second Avenue Boston — 1,691 — 12,569 11,556 — 1,691 — 24,125 25,816 (12,957 ) 2005 (A) Chemin de l’Epinglier 2 Geneva — — — 20,071 (1,584 ) — — — 18,487 18,487 (6,300 ) 2005 (A) 7500 Metro Center Drive Austin — 1,177 — 4,877 67,500 — 1,177 — 72,377 73,554 (5,775 ) 2005 (A) 3 Corporate Place New York — 2,124 — 12,678 127,334 — 2,124 — 140,012 142,136 (67,989 ) 2005 (A) 4025 Midway Road Dallas — 2,196 — 14,037 28,627 — 2,196 — 42,664 44,860 (24,747 ) 2006 (A) Clonshaugh Industrial Estate Dublin — — 1,444 5,569 2,625 — — 90 8,194 8,284 (4,793 ) 2006 (A) 6800 Millcreek Drive Toronto — 1,657 — 11,352 2,279 — 1,657 — 13,631 15,288 (5,337 ) 2006 (A) 101 Aquila Way Atlanta — 1,480 — 34,797 52 — 1,480 — 34,849 36,329 (11,827 ) 2006 (A) 12001 North Freeway Houston — 6,965 — 23,492 145,311 — 6,965 — 168,803 175,768 (34,400 ) 2006 (A) 120 E Van Buren Phoenix — 4,524 — 157,822 106,684 — 4,524 — 264,506 269,030 (101,945 ) 2006 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: Gyroscoopweg 2E-2F Amsterdam — — — 13,450 (2,011 ) — — — 11,439 11,439 (3,978 ) 2006 (A) Clonshaugh Industrial Estate II Dublin — — — — 75,735 — — — 75,735 75,735 (32,367 ) 2006 (C) 600 Winter Street Boston — 1,429 — 6,228 456 — 1,429 — 6,684 8,113 (1,898 ) 2006 (A) 2300 NW 89th Place Miami — 1,022 — 3,767 19 — 1,022 — 3,786 4,808 (1,450 ) 2006 (A) 2055 East Technology Circle Phoenix — — — 8,519 27,522 — — — 36,041 36,041 (21,882 ) 2006 (A) 114 Rue Ambroise Croizat Paris — 12,261 — 34,051 65,181 — 9,533 — 101,960 111,493 (39,419 ) 2006 (A) Unit 9, Blanchardstown Corporate Park Dublin — 1,927 — 40,024 14,850 — 1,573 — 55,228 56,801 (17,215 ) 2006 (A) 111 8th Avenue New York — — — 17,688 16,993 — — — 34,681 34,681 (27,068 ) 2006 (A) 8100 Boone Boulevard N. Virginia — — — 158 1,206 — — — 1,364 1,364 (1,119 ) 2006 (A) 21110 Ridgetop Circle N. Virginia — 2,934 — 14,311 1,307 — 2,934 — 15,618 18,552 (4,756 ) 2007 (A) 3011 Lafayette Street Silicon Valley — 3,354 — 10,305 49,187 — 3,354 — 59,492 62,846 (40,001 ) 2007 (A) 44470 Chilum Place N. Virginia — 3,531 — 37,360 1 — 3,531 — 37,361 40,892 (9,065 ) 2007 (A) 43881 Devin Shafron Drive N. Virginia — 4,653 — 23,631 91,427 — 4,653 — 115,058 119,711 (71,066 ) 2007 (A) 43831 Devin Shafron Drive N. Virginia — 3,027 — 16,247 1,229 — 3,027 — 17,476 20,503 (4,541 ) 2007 (A) 43791 Devin Shafron Drive N. Virginia — 3,490 — 17,444 77,073 — 3,490 — 94,517 98,007 (38,282 ) 2007 (A) Mundells Roundabout London — 31,354 — — 53,426 — 23,489 — 61,291 84,780 (11,536 ) 2007 (C) 1 Savvis Parkway St. Louis — 3,301 — 20,639 1,125 — 3,301 — 21,764 25,065 (5,553 ) 2007 (A) 1500 Space Park Drive Silicon Valley — 6,732 — 6,325 46,078 — 4,106 — 55,029 59,135 (40,103 ) 2007 (A) Cressex 1 London — 3,629 — 9,036 23,810 — 2,833 — 33,642 36,475 (16,677 ) 2007 (A) Naritaweg 52 Amsterdam — — 1,192 23,441 (5,812 ) — — 888 17,629 18,517 (4,319 ) 2007 (A) 1 St. Anne’s Boulevard London — 1,490 — 1,045 (534 ) — 1,128 — 873 2,001 (178 ) 2007 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 2 St. Anne’s Boulevard London — 922 — 695 37,874 — 751 — 38,740 39,491 (4,255 ) 2007 (A) 3 St. Anne’s Boulevard London — 22,079 — 16,351 96,759 — 16,563 — 118,626 135,189 (42,834 ) 2007 (A) 365 South Randolphville Road New York — 3,019 — 17,404 275,759 — 3,019 — 293,163 296,182 (69,056 ) 2008 (A) 701 & 717 Leonard Street Dallas — 2,165 — 9,934 826 — 2,165 — 10,760 12,925 (2,204 ) 2008 (A) Manchester Technopark Manchester — — — 23,918 (5,802 ) — — — 18,116 18,116 (3,919 ) 2008 (A) 1201 Comstock Street Silicon Valley — 2,093 — 1,606 26,684 — 3,398 — 26,985 30,383 (14,210 ) 2008 (A) 1550 Space Park Drive Silicon Valley — 2,301 — 766 1,747 — 1,929 — 2,885 4,814 — 2008 (A) 1525 Comstock Street Silicon Valley — 2,293 — 16,216 30,616 — 2,061 — 47,064 49,125 (23,287 ) 2008 (A) 43830 Devin Shafron Drive N. Virginia — 5,509 — — 73,468 — 5,509 — 73,468 78,977 (23,394 ) 2009 (C) 1232 Alma Road Dallas — 2,267 — 3,740 63,830 — 2,266 — 67,571 69,837 (26,467 ) 2009 (A) 900 Quality Way Dallas — 1,446 — 1,659 69,165 — 1,446 — 70,824 72,270 (10,008 ) 2009 (A) 1400 N. Bowser Road Dallas — 2,041 — 3,389 6,181 — 3,636 — 7,975 11,611 — 2009 (A) 1301 International Parkway Dallas — 333 — 344 76,746 — 2,131 — 75,292 77,423 (238 ) 2009 (A) 908 Quality Way Dallas — 6,730 — 4,493 13,693 — 2,067 — 22,849 24,916 (13,011 ) 2009 (A) 904 Quality Way Dallas — 760 — 744 6,814 — 1,151 — 7,167 8,318 (624 ) 2009 (A) 905 Security Row Dallas — — — — — — — — — — — 2009 (A) 1202 Alma Road Dallas — — — — 44,349 — 1,921 — 42,428 44,349 (8,715 ) 2009 (C) 1350 Duane Silicon Valley — 7,081 — 69,817 61 — 7,081 — 69,878 76,959 (11,175 ) 2009 (A) 45901 & 45845 Nokes Boulevard N. Virginia — 3,437 — 28,785 450 — 3,437 — 29,235 32,672 (4,913 ) 2009 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 21561 & 21571 Beaumeade Circle N. Virginia — 3,966 — 24,211 45 — 3,966 — 24,256 28,222 (3,767 ) 2009 (A) 60 & 80 Merritt New York — 3,418 — 71,477 92,311 — 3,418 — 163,788 167,206 (22,425 ) 2010 (A) 55 Middlesex Boston — 9,975 — 68,363 8,170 — 9,975 — 76,533 86,508 (15,970 ) 2010 (A) 128 First Avenue Boston — 5,465 — 185,348 30,328 — 5,465 — 215,676 221,141 (44,598 ) 2010 (A) Cateringweg 5 Amsterdam — — 3,518 3,517 37,032 — — 3,122 40,549 43,671 (4,959 ) 2010 (A) 1725 Comstock Street Silicon Valley — 3,274 — 6,567 37,900 — 3,274 — 44,467 47,741 (15,944 ) 2010 (A) 3015 and 3115 Alfred Street Silicon Valley — 6,533 — 3,725 55,645 — 6,562 — 59,341 65,903 (17,930 ) 2010 (A) 365 Main Street San Francisco — 22,854 — 158,709 22,737 — 22,854 — 181,446 204,300 (32,439 ) 2010 (A) 720 2nd Street San Francisco — 3,884 — 116,861 9,594 — 3,884 — 126,455 130,339 (20,522 ) 2010 (A) 2260 East El Segundo Los Angeles — 11,053 — 51,397 13,205 — 11,053 — 64,602 75,655 (12,276 ) 2010 (A) 2121 South Price Road Phoenix — 7,335 — 238,452 199,624 — 7,335 — 438,076 445,411 (67,279 ) 2010 (A) 4030 La Fayette N. Virginia — 2,492 — 16,912 3,517 — 2,492 — 20,429 22,921 (3,788 ) 2010 (A) 4040 La Fayette N. Virginia — 1,246 — 4,267 24,510 — 1,246 — 28,777 30,023 (1,773 ) 2010 (A) 4050 La Fayette N. Virginia — 1,246 — 4,371 35,017 — 1,246 — 39,388 40,634 (13,601 ) 2010 (A) 800 Central Expressway Silicon Valley — 8,976 — 18,155 130,755 — 8,294 — 149,592 157,886 (10,502 ) 2010 (A) 29A International Business Park Singapore — — — 137,545 190,975 — — — 328,520 328,520 (56,103 ) 2010 (A) Loudoun Parkway North N. Virginia — 17,300 — — 495,564 — 17,746 — 495,118 512,864 (32,184 ) 2011 (C) 1-23 Templar Road Sydney — 11,173 — — 62,906 — 7,181 — 66,898 74,079 (6,681 ) 2011 (C) Fountain Court London — 7,544 — 12,506 95,637 — 7,217 — 108,470 115,687 (9,995 ) 2011 (C) 98 Radnor Drive Melbourne — 4,467 — — 91,340 — 3,215 — 92,592 95,807 (10,456 ) 2011 (C) Cabot Street Boston — 2,386 — — 58,806 — 2,427 — 58,765 61,192 (3,634 ) 2011 (C) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total PROPERTIES: 3825 NW Aloclek Place Portland — 1,689 — — 57,201 — 1,689 — 57,201 58,890 (10,724 ) 2011 (C) 11085 Sun Center Drive Sacramento — 2,490 — 21,509 1 — 2,490 — 21,510 24,000 (2,633 ) 2011 (A) Profile Park Dublin — 6,288 — — 38,565 — 5,350 — 39,503 44,853 (530 ) 2011 (C) 1506 Moran Road N. Virginia — 1,527 — — 17,185 — 1,115 — 17,597 18,712 (1,348 ) 2011 (A) 760 Doug Davis Drive Atlanta — 4,837 — 53,551 2,807 — 4,837 — 56,358 61,195 (7,712 ) 2011 (A) 360 Spear Street San Francisco — 19,828 — 56,733 (854 ) — 19,828 — 55,879 75,707 (8,397 ) 2011 (A) 2501 S. State Hwy 121 Dallas — 23,137 — 93,943 14,828 — 23,137 — 108,771 131,908 (17,611 ) 2012 (A) 9333, 9355, 9377 Grand Avenue Chicago — 5,686 — 14,515 259,630 — 5,960 — 273,871 279,831 (17,681 ) 2012 (A) 8025 North Interstate 35 Austin 5,801 2,920 — 8,512 184 — 2,920 — 8,696 11,616 (1,095 ) 2012 (A) 850 E Collins Dallas — 1,614 — — 81,875 — 1,614 — 81,875 83,489 (6,925 ) 2012 (C) 950 E Collins Dallas — 1,546 — — 74,994 — 1,546 — 74,994 76,540 (3,621 ) 2012 (C) 400 S. Akard Dallas — 10,075 — 62,730 1,690 — 10,075 — 64,420 74,495 (6,066 ) 2012 (A) 410 Commerce Boulevard New York — — — — 29,747 — — — 29,747 29,747 (5,625 ) 2012 (C) Unit B Prologis Park London — 1,683 — 104,728 (6,565 ) — 1,552 — 98,294 99,846 (9,903 ) 2012 (A) The Chess Building London — — 7,355 219,273 9,773 — — 7,217 229,046 236,263 (22,462 ) 2012 (A) Unit 21 Goldsworth Park London — 17,334 — 928,129 (26,882 ) — 15,800 — 902,781 918,581 (89,393 ) 2012 (A) 11900 East Cornell Denver — 3,352 — 80,640 1,758 — 3,352 — 82,398 85,750 (8,837 ) 2012 (A) 701 Union Boulevard New York — 10,045 — 6,755 27,878 — 10,045 — 34,633 44,678 — 2012 (A) 23 Waterloo Road Sydney — 7,112 — 3,868 (3,284 ) — 4,985 — 2,711 7,696 (244 ) 2012 (A) 1 Rue Jean-Pierre Paris — 9,621 — 35,825 (8,029 ) — 7,921 — 29,496 37,417 (3,209 ) 2012 (A) Liet-dit le Christ de Saclay Paris — 3,402 — 3,090 (1,147 ) — 2,801 — 2,544 5,345 (357 ) 2012 (A) 127 Rue de Paris Paris — 8,637 — 10,838 (3,441 ) — 7,111 — 8,923 16,034 (1,208 ) 2012 (A) 17201 Waterview Parkway Dallas — 2,070 — 6,409 (1 ) — 2,070 — 6,408 8,478 (615 ) 2013 (A) 1900 S. Price Road Phoenix — 5,380 — 16,975 320 — 5,380 — 17,295 22,675 (1,609 ) 2013 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total 371 Gough Road Toronto — 7,394 677 67,316 — 5,700 — 69,687 75,387 (2,126 ) 2013 (A) 1500 Towerview Road Minneapolis — 10,190 20,054 3,168 — 10,190 — 23,222 33,412 (2,124 ) 2013 (A) Principal Park London — 11,837 — 114,293 — 13,886 — 112,244 126,130 (1,991 ) 2013 (C) MetCenter Business Park Austin — 8,604 20,314 364 — 8,604 — 20,678 29,282 (2,208 ) 2013 (A) Liverpoolweg 10 Amsterdam — 733 3,122 7,085 — 611 — 10,329 10,940 (775 ) 2013 (A) DePresident Amsterdam — 6,737 — 6,354 — 6,774 — 6,317 13,091 — 2013 (C) Saito Industrial Park Osaka — 9,649 — 1,744 — 8,321 — 3,072 11,393 — 2013 (C) Crawley 2 London — 24,305 — 1,741 — 22,020 — 4,026 26,046 (97 ) 2014 (C) Digital Deer Park 3 Melbourne — 1,600 — — 29 — 1,629 — — 1,629 — 2015 (C) 3 Loyang Way Singapore — — — — 77,190 — — — 77,190 77,190 — 2015 (C) Digital Loudoun 3 N. Virginia — 43,000 — — 1,445 — 44,155 — 290 44,445 (10 ) 2015 (C) Digital Frankfurt Frankfurt — 5,543 — — 1,121 — 6,664 — — 6,664 — 2015 (C) 56 Marietta Street Atlanta — 1,700 — 211,397 1,116 — 1,700 — 212,513 214,213 (2,136 ) 2015 (A) 2 Peekay Drive New York — — — 115,439 3,102 — — — 118,541 118,541 (1,575 ) 2015 (A) 100 Delawanna Avenue New York — 3,600 — 85,438 682 — 3,600 — 86,120 89,720 (742 ) 2015 (A) 60 Hudson Street New York — — — 32,280 945 — — — 33,225 33,225 (715 ) 2015 (A) 32 Avenue of the Americas New York — — — 30,980 465 — — — 31,445 31,445 (514 ) 2015 (A) 3433 S 120th Place Seattle — — — 11,688 240 — — — 11,928 11,928 (359 ) 2015 (A) 8435 Stemmons Freeway Dallas — — — 5,023 121 — — — 5,144 5,144 (148 ) 2015 (A) 2625 Walsh Avenue Silicon Valley — — — 4,276 536 — — — 4,812 4,812 (72 ) 2015 (A) 111 8th Avenue - Telx New York (3 ) — — — 42,454 818 — — 43,272 43,272 (1,084 ) 2015 (A) 350 East Cermak Road - Telx Chicago (3 ) — — — 13,933 405 — — — 14,338 14,338 (303 ) 2015 (A) 200 Paul Avenue - Telx San Francisco (3 ) — — — 6,719 243 — — — 6,962 6,962 (142 ) 2015 (A) 2323 Bryan Street - Telx Dallas (3 ) — — — 5,191 157 — — — 5,348 5,348 (108 ) 2015 (A) 600 W. 7th Street - Telx Los Angeles (3 ) — — — 3,689 101 — — — 3,790 3,790 (89 ) 2015 (A) 3825 NW Aloclek Place - Telx Portland (3 ) — — — 3,131 137 — — — 3,268 3,268 (39 ) 2015 (A) 120 E. Van Buren Street - Telx Phoenix (3 ) — — — 2,848 (351 ) — — — 2,497 2,497 (53 ) 2015 (A) 36 NE 2nd Street - Telx Miami (3 ) — — — 1,842 36 — — — 1,878 1,878 (42 ) 2015 (A) 600-780 S. Federal Street - Telx Chicago (3 ) — — — 1,815 30 — — — 1,845 1,845 (39 ) 2015 (A) Metropolitan Encumbrances Initial costs Costs capitalized Total costs Accumulated Date of Acquisition Land Acquired Buildings and Improvements Carrying Land Acquired Buildings and Total 113 N. Myers Street - Telx Charlotte (3 ) — — — 476 27 — — — 503 503 (7 ) 2015 (A) 1100 Space Park Drive - Telx Silicon Valley (3 ) — — — 352 11 — — — 363 363 (10 ) 2015 (A) 300 Boulevard East - Telx New York (3 ) — — — 197 19 — — — 216 216 (5 ) 2015 (A) Other — 8,298 — 14,839 — — — 23,137 23,137 (8,096 ) 303,183 731,863 14,986 5,014,720 5,156,151 (5,900 ) 689,573 12,639 10,213,161 10,915,373 (2,251,268 ) (1) The balance shown includes an unamortized premium of $427 . (2) The balance shown includes an unamortized premium of $12 . (3) Represents properties acquired in the Telx Acquisition. (1) Tax Cost The aggregate gross cost of the Company’s properties for federal income tax purposes approximated $11.7 billion (unaudited) as of December 31, 2015. (2) Historical Cost and Accumulated Depreciation and Amortization The following table reconciles the historical cost of the Company’s properties for financial reporting purposes for each of the years in the three-year period ended December 31, 2015. Year Ended December 31, 2015 2014 2013 Balance, beginning of year $ 9,982,612 $ 9,879,578 $ 8,742,519 Additions during period (acquisitions and improvements) 1,133,263 560,307 1,345,046 Deductions during period (dispositions, impairments and assets held for sale) (200,502 ) (457,273 ) (207,987 ) Balance, end of year $ 10,915,373 $ 9,982,612 $ 9,879,578 The following table reconciles accumulated depreciation and amortization of the Company’s properties for financial reporting purposes for each of the years in the three-year period ended December 31, 2015. Year Ended December 31, 2015 2014 2013 Balance, beginning of year $ 1,874,054 $ 1,565,996 $ 1,206,017 Additions during period (depreciation and amortization expense) 429,057 413,652 386,935 Deductions during period (dispositions and assets held for sale) (51,843 ) (105,594 ) (26,956 ) Balance, end of year $ 2,251,268 $ 1,874,054 $ 1,565,996 Schedules other than those listed above are omitted because they are not applicable or the information required is included in the consolidated financial statements or the notes thereto.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The accompanying 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 notes to the 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 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. generally does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public securities from time to time and guaranteeing certain unsecured debt of the Operating Partnership and certain of its subsidiaries and affiliates. Digital Realty Trust, Inc. itself has not issued any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries and affiliates, 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 or loaned to Digital Realty Trust, L.P. on a temporary basis prior to contribution in exchange for partnership units, the Operating Partnership generally generates the capital required by the Company’s business primarily through the Operating Partnership’s operations, by the Operating Partnership’s or its affiliates’ direct or indirect incurrence of indebtedness or through the issuance of partnership units. The presentation of noncontrolling interests in operating partnership, stockholders’ equity and partners’ capital are the main areas of difference between the 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 consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s 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 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 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 consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership: • consolidated face financial statements; and • the following notes to the consolidated financial statements: • Debt of the Company and Debt of the Operating Partnership; • Income per Share and Income per Unit; • Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Accumulated Other Comprehensive Income (Loss) of the Operating Partnership; and • Quarterly Financial Information. 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 generally operates the business through the Operating Partnership.
Cash Equivalents	Cash Equivalents For the purpose of the consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents.
Investments In Real Estate	Investments in Real Estate Investments in real estate are stated at cost, less accumulated depreciation and amortization. Land is not depreciated. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives as follows: Acquired ground leases Terms of the related lease Buildings and improvements 5-39 years Machinery and equipment 7-15 years Furniture and fixtures 3-5 years Leasehold improvements Shorter of the estimated useful lives or the terms of the related leases Tenant improvements Shorter of the estimated useful lives or the terms of the related leases Improvements and replacements are capitalized when they extend the useful life, increase capacity, or improve the efficiency of the asset. Repairs and maintenance are charged to expense as incurred. Assets that are classified as held for sale are recorded at the lower of their carrying value or fair value less costs to dispose. We classify an asset as held for sale once management has the authority to approve and commits to a plan to sell, the asset is available for immediate sale, an active program to locate a buyer has commenced and the sale of the asset is probable and transfer of the asset is expected to occur within one year. Upon the classification of assets as held for sale or sold, the depreciation and amortization of the assets will cease.
Investments In Unconsolidated Joint Ventures Policy	Investment in Unconsolidated Joint Ventures The Company’s investment in unconsolidated joint ventures is accounted for using the equity method, whereby the investment is increased for capital contributed and our share of the joint ventures’ net income and decreased by distributions we receive and our share of any losses of the joint ventures. We amortize the difference between the cost of our investments in unconsolidated joint ventures and the book value of the underlying equity into equity in earnings from unconsolidated affiliates on a straight-line basis consistent with the lives of the underlying assets.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We review each of our properties for indicators that its carrying amount may not be recoverable. Examples of such indicators may include a significant decrease in the market price of the property, a change in the expected holding period for the property, a significant adverse change in how the property is being used or expected to be used based on the underwriting at the time of acquisition, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of the property, or a history of operating or cash flow losses of the property. When such impairment indicators exist, we review an estimate of the future undiscounted net cash flows (excluding interest charges) expected to result from the real estate investment’s use and eventual disposition and compare that estimate to the carrying value of the property. We consider factors such as future operating income, trends and prospects, as well as the effects of leasing demand, competition and other factors. If our future undiscounted net cash flow evaluation indicates that we are unable to recover the carrying value of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. These losses have a direct impact on our net income because recording an impairment loss results in an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results in future periods. Since cash flows on properties considered to be long-lived assets to be held and used are considered on an undiscounted basis to determine whether the carrying value of a property is recoverable, our strategy of holding properties over the long-term directly decreases the likelihood of their carrying values not being recoverable and therefore requiring the recording of an impairment loss. If our strategy changes or market conditions otherwise dictate an earlier sale date, an impairment loss may be recognized and such loss could be material. If we determine that the asset fails the recoverability test, the affected assets must be reduced to their fair value. We generally estimate the fair value of rental properties utilizing a discounted cash flow analysis that includes projections of future revenues, expenses and capital improvement costs that a market participant would use based on the highest and best use of the asset, which is similar to the income approach that is commonly utilized by appraisers. In certain cases, we may supplement this analysis by obtaining outside broker opinions of value.
Purchase Accounting for Acquisition of Investments in Real Estate	Purchase Accounting for Acquisition of Investments in Real Estate Purchase accounting is applied to the assets and liabilities related to all real estate investments acquired from third parties. In accordance with current accounting guidance , the fair value of the real estate acquired is allocated to the acquired tangible assets, consisting primarily of land, building and tenant improvements, and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases, value of tenant relationships and acquired ground leases, based in each case on their fair values. Loan premiums, in the case of above market rate loans, or loan discounts, in the case of below market loans, are recorded based on the fair value of any loans assumed in connection with acquiring the real estate. The fair values of the tangible assets of an acquired property are determined based on comparable land sales for land and replacement costs adjusted for physical and market obsolescence for the improvements. The fair values of the tangible assets of an acquired property are also determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land, building and tenant improvements based on management’s determination of the relative fair values of these assets. Management determines the as-if-vacant fair value of a property based on assumptions that a market participant would use, which is similar to methods used by independent appraisers. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions, tenant improvements, legal and other related costs. In allocating the fair value of the identified intangible assets and liabilities of an acquired property, above-market and below-market in-place lease values are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases and (ii) estimated fair market lease rates from the perspective of a market participant for the corresponding in-place leases, measured, for above-market leases, over a period equal to the remaining non-cancelable term of the lease and, for below-market leases, over a period equal to the initial term plus any below market fixed rate renewal periods. The leases we have acquired do not currently include any below market fixed rate renewal periods. The capitalized above-market lease values are amortized as a reduction of rental income over the remaining non-cancelable terms of the respective leases. The capitalized below-market lease values, also referred to as acquired lease obligations, are amortized as an increase to rental income over the initial terms of the respective leases and any below market fixed rate renewal periods. In addition to the intangible value for above market leases and the intangible negative value for below market leases, there is intangible value related to having tenants leasing space in the purchased property, which is referred to as in-place lease value and tenant relationship value. Such value results primarily from the buyer of a leased property avoiding the costs associated with leasing the property and also avoiding rent losses and unreimbursed operating expenses during the lease up period. Factors to be considered by management in its analysis of in-place lease values include an estimate of carrying costs during hypothetical expected lease-up periods considering current market conditions, and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the expected lease-up periods, depending on local market conditions. In estimating costs to execute similar leases, management considers leasing commissions, legal and other related expenses. Characteristics considered by management in valuing tenant relationships include the nature and extent of the Company’s existing business relationships with the tenant, growth prospects for developing new business with the tenant, the tenant’s credit quality and expectations of lease renewals. The value of in-place leases are amortized to expense over the remaining initial terms of the respective leases. The value of tenant relationship intangibles are amortized to expense over the anticipated life of the relationships.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is not amortized. Management will perform an annual impairment test for goodwill and between annual tests, management will evaluate the recoverability of goodwill whenever events or changes in circumstances indicate that the carrying value of goodwill may not be fully recoverable. In its impairment tests of goodwill, management will first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If based on this assessment, management determines that the fair value of the reporting unit is not less than its carrying value, then performing the additional two-step impairment test is unnecessary. If the carrying value of goodwill exceeds its fair value, an impairment charge is recognized.
Capitalization of Costs	Capitalization of Costs Direct and indirect project costs that are clearly associated with the development of properties are capitalized as incurred. Project costs include all costs directly associated with the development 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 are not capitalized and are charged to expense as incurred. Capitalization of costs begins when the activities necessary to get the development project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development project is substantially complete and ready for its intended use. Determining when a development project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development project to be substantially complete and ready for its intended use upon receipt of a certificate of occupancy. If and when development of a property is suspended pursuant to a formal change in the planned use of the property, we will evaluate whether the accumulated costs exceed the estimated value of the project and write off the amount of any such excess accumulated costs. For a development project that is suspended for reasons other than a formal change in the planned use of such property, the accumulated project costs are evaluated for impairment consistent with our impairment policies for long-lived assets. Capitalized costs are allocated to the specific components of a project that are benefited.
Deferred Leasing Costs	Deferred Leasing Costs Leasing commissions and other direct and indirect costs associated with the acquisition of tenants are capitalized and amortized on a straight line basis over the terms of the related leases.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of our subsidiaries outside the United States with non-U.S. dollar functional currencies are translated into U.S. dollars using exchange rates as of the balance sheet dates. Income and expenses are translated using the average exchange rates for the reporting period. Foreign currency translation adjustments are recorded as a component of other comprehensive income.
Deferred Financing Costs Policy	Deferred Financing Costs Loan fees and costs are capitalized and amortized over the life of the related loans on a straight-line basis, which approximates the effective interest method. Such amortization is included as a component of interest expense.
Restricted Cash	Restricted Cash Restricted cash consists of deposits for real estate taxes and insurance and other amounts as required by our loan agreements including funds for leasing costs and improvements related to unoccupied space.
Offering Costs Policy	Offering Costs Underwriting commissions and other offering costs are reflected as a reduction in additional paid-in capital, or in the case of preferred stock, as a reduction of the carrying value of preferred stock.
Share Based Compensation	Share Based Compensation The Company measures all share-based compensation awards at fair value on the date they are granted to employees and directors, and recognizes compensation cost, net of forfeitures, over the requisite service period for awards with only a service condition. The estimated fair value of the long-term incentive units and Class D Units (discussed in note 13) granted by us is being amortized on a straight-line basis over the expected service period. The fair value of share-based compensation awards that contain a market condition is measured using a Monte Carlo simulation method and not adjusted based on actual achievement of the market condition.
Accounting For Derivative Instruments And Hedging Activities	Accounting for Derivative Instruments and Hedging Activities We account for our derivative instruments and hedging activities in accordance with the accounting standard for derivative and hedging activities. The accounting standard requires us to measure every derivative instrument (including certain derivative instruments embedded in other contracts) at fair value and record them in the balance sheet as either an asset or liability. 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. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The amount of gain (loss) recognized in income related to the ineffective portion of the hedging relationships for the years ended December 31, 2015 and 2014 was approximately $(1.6) million and $0.8 million , respectively. During the year ended December 31, 2013 , there was no ineffective portion to our interest rate swaps. We actively manage our ratio of fixed-to-floating rate debt. To manage our fixed and floating rate debt in a cost-effective manner, we, from time to time, enter into interest rate swap agreements as cash flow hedges, under which we agree to exchange various combinations of fixed and/or variable interest rates based on agreed upon notional amounts. We do not enter into derivative instruments for trading purposes.
Income Taxes	Income Taxes Digital Realty Trust, Inc. has elected to be treated as a real estate investment trust (a “REIT”) for federal income tax purposes. As a REIT, Digital Realty Trust, Inc. generally is not required to pay federal corporate income tax to the extent taxable income is currently distributed to its stockholders. If Digital Realty Trust, Inc. 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 Company is subject to foreign, state and local income taxes in the jurisdictions in which it conducts business. The Company’s U.S. consolidated taxable REIT subsidiaries are subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes current and deferred income taxes for its taxable REIT subsidiaries, 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 December 31, 2015 and 2014 , 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 consolidated income statements. For the years ended December 31, 2015 , 2014 and 2013 , we had no such interest or penalties. The tax year 2012 and thereafter remain open to examination by the major taxing jurisdictions with which the Company files tax returns.
Presentation Of Transactional Based Taxes Policy	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.
Revenue Recognition	Revenue Recognition All leases are classified as operating leases and minimum rents are recognized on a straight-line basis over the terms of the leases. The excess of rents recognized over amounts contractually due pursuant to the underlying leases is included in deferred rent in the accompanying consolidated balance sheets and contractually due but unpaid rents are included in accounts and other receivables. Tenant reimbursements for real estate taxes, common area maintenance, and other recoverable costs are recognized in the period that the expenses are incurred. Lease termination fees, which are included in other revenue in the accompanying consolidated income statements, are recognized over the new remaining term of the lease, effective as of the date the lease modification is finalized, and assuming collection is probable. A provision for loss is made if the collection of the receivable balances related to contractual rent, rent recorded on a straight-line basis, tenant reimbursements and lease termination fees are considered to be doubtful.
Asset Retirement Obligations	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.
Construction Management Revenue	Fee Income Occasionally, customers engage the company for certain services. The nature of these services historically involves property management, construction management, and assistance with financing. The proper revenue recognition of these services can be different, depending on whether the arrangements are service revenue or contractor type revenue. Service revenues are typically recognized on an equal monthly basis based on the minimum fee to be earned. The monthly amounts could be adjusted depending on if certain performance milestones are met. Fee income also includes management fees. These fees arise from contractual agreements with entities in which we have a noncontrolling interest. The management fees are recognized as earned under the respective agreements. Management and other fee income related to partially owned entities are recognized to the extent attributable to the unaffiliated interest.
Assets and Liabilities Measured at Fair Value	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 lowest level input that is significant would be used to determine 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.
Transactions Expense	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 significant transactions.
Managements Estimates	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 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, contingent consideration, accounts receivable and deferred rent receivable, performance-based equity compensation plans and the completeness of accrued liabilities 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.
Segment and Geographic Information	Segment and Geographic 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 real estate services provided to them are standardized throughout the portfolio. 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.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis, which provides guidance on the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. In accordance with the guidance, all legal entities are subject to reevaluation under the revised consolidation model. The guidance is effective in the first quarter of 2016, and early adoption is permitted. We do not expect the adoption of ASU 2015-02 to have a significant impact on our consolidated financial statements. On April 1, 2015, the FASB voted to defer the effective date of ASU No. 2014-09, which outlines a single comprehensive model for entities to use in accounting for revenues arising from contracts with customers and notes that lease contracts with customers are a scope exception. Public business entities are required to adopt this standard for annual reporting periods beginning after December 15, 2017, early adoption is permitted. We are currently assessing the impact of the guidance on our consolidated financial statements. On April 17, 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the associated debt liability. Currently, debt issuance costs are recorded as an asset and amortization of these deferred financing costs is recorded in interest expense. Under the new standard, debt issuance costs will continue to be amortized over the life of the debt instrument and amortization will continue to be recorded in interest expense. The new standard is effective for the Company on January 1, 2016 and will be applied on a retrospective basis. The Company is currently evaluating ASU 2015-03, and anticipates a change in our presentation only since the standard does not alter the accounting for debt issuance costs. In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement Period Adjustments (Topic 805). ASU 2015-16 requires an acquirer in a business combination to recognize provisional amounts when measurements were incomplete as of the end of a reporting period as an adjustment in the reporting period in which the provisional amount is determined. Prior to this standard, the acquirer was required to adjust such provisional amounts by restating prior period financial statements. ASU 2015-16 is effective for the annual period ending December 31, 2016 and for annual periods and interim periods thereafter with early adoption permitted. The Company elected to early adopt this standard effective with the interim period beginning July 1, 2015 and this standard did not have a material effect on the consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e., lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. The ASU is expected to impact the Company’s consolidated financial statements as the Company has certain operating and land lease arrangements for which it is the lessee. ASU 2016-02 supersedes the previous leases standard, Leases (Topic 840). The standard is effective on January 1, 2019, with early adoption permitted. The Company is currently in the process of evaluating the impact the adoption of ASU 2016-02 will have on the Company’s financial position or results of operations.

Summary of Significant Accoun31

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Property, Plant and Equipment	Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives as follows: Acquired ground leases Terms of the related lease Buildings and improvements 5-39 years Machinery and equipment 7-15 years Furniture and fixtures 3-5 years Leasehold improvements Shorter of the estimated useful lives or the terms of the related leases Tenant improvements Shorter of the estimated useful lives or the terms of the related leases

Investments In Real Estate (Tab

Investments In Real Estate (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Schedule of Real Estate Properties	A summary of our investments in properties as of December 31, 2015 and 2014 is as follows: As of December 31, 2015 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 109,389 $ — $ 1,441,749 $ 95,185 $ (608,153 ) $ 1,038,170 Corporate Data Centers 551,372 11,317 8,055,059 433,682 (1,586,509 ) 7,464,921 Technology Manufacturing 20,199 1,322 56,254 6,333 (22,677 ) 61,431 Technology Office 5,368 — 43,154 1,459 (18,564 ) 31,417 Other 3,245 — 80,211 75 (15,365 ) 68,166 $ 689,573 $ 12,639 $ 9,676,427 $ 536,734 $ (2,251,268 ) $ 8,664,105 As of December 31, 2014 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 112,265 $ — $ 1,459,930 $ 99,864 $ (541,023 ) $ 1,131,036 Corporate Data Centers 525,192 12,196 7,117,789 368,837 (1,286,024 ) 6,737,990 Technology Manufacturing 25,471 — 67,238 4,764 (20,506 ) 76,967 Technology Office 5,368 — 42,356 1,459 (14,759 ) 34,424 Other 3,306 — 136,501 76 (11,742 ) 128,141 $ 671,602 $ 12,196 $ 8,823,814 $ 475,000 $ (1,874,054 ) $ 8,108,558 (1) Balance includes, as of December 31, 2015 and 2014 , $0.7 billion and $0.8 billion of direct and accrued costs associated with development in progress, respectively.
Schedule of Purchase Price Allocation	The following table summarizes the preliminary amounts for acquired assets and liabilities recorded at their fair values as of the acquisition date (in thousands): Investments in real estate $ 604,870 Goodwill 316,309 Intangibles: Tenant relationship value 734,800 Acquired in-place lease value 252,269 Trade name 7,300 Above/below market lease value, net (13,100 ) Capital lease and other long-term obligations (63,962 ) Other working capital accounts and adjustments, net 47,514 Total purchase price $ 1,886,000
Schedule of Pro forma Information (unaudited)	The following unaudited pro forma financial information presents our results as though the Telx Acquisition, as well as the transactions that were used to fund the Telx Acquisition, had been consummated as of January 1, 2014. The pro forma information does not necessarily reflect the actual results of operations had the transactions been consummated at the beginning of the period indicated nor is it necessarily indicative of future operating results. The pro forma information does not give effect to any cost synergies or other operating efficiencies that could result from the Telx Acquisition and also does not include any transaction and integration expenses. The pro forma results for 2015 include approximately three months of actual results for Telx and nine months of pro forma adjustments. Actual results in 2015 included rental revenues and operating expenses of the acquired properties of $81.1 million and $71.3 million , respectively. (amounts in thousands, except for per share amounts) 2015 2014 Total revenues $ 1,978,405 $ 1,873,526 Net income (loss) available to common stockholders $ 92,812 $ (19,749 ) Net income (loss) per share available to common stockholders - basic and diluted $ 0.63 $ (0.14 )
Schedule of Real Estate Property Acquisitions	2015 Acquisitions Location Metropolitan Area Date Acquired Amount (1) Deer Park 3 (2) Melbourne April 15, 2015 $ 1.6 3 Loyang Way (3)(4) Singapore June 25, 2015 45.0 Digital Loudoun 3 (2) Northern Virginia November 16, 2015 43.0 Digital Frankfurt (2) Frankfurt December 18, 2015 5.6 $ 95.2 2014 Acquisitions Location Metropolitan Area Date Acquired Amount (1) Crawley 2 (2) London September 16, 2014 $ 23.0 (1) Purchase prices are all in U.S. dollars and exclude capitalized closing costs on land acquisitions. Purchase prices for acquisitions outside the United States are based on the exchange rate at the date of acquisition. (2) Represents currently vacant land which is not included in our operating property count. (3) Represents a development property with an existing shell, which is included in our operating property count. This acquisition lacked key inputs to qualify as a business combination under purchase accounting guidance, and has therefore been accounted for as an asset acquisition, not a business combination. (4) Property is subject to a ground lease, which expires in February 2024, with a renewal provision for an additional 28 years upon satisfaction of certain requirements.
Schedule of Dispositions	We sold the following real estate properties during the years ended December 31, 2015 and 2014 : 2015 Dispositions Location Metropolitan Area Date Sold Gross Proceeds (in millions) Gain (Loss) on Sale (in millions) 100 Quannapowitt Parkway Boston February 5, 2015 $ 31.1 $ 10.1 3300 East Birch Street Los Angeles March 31, 2015 14.2 7.5 833 Chestnut Street Philadelphia April 30, 2015 160.8 (1) 77.1 650 Randolph Road New York Metro December 30, 2015 9.2 (0.1 ) $ 215.3 $ 94.6 2014 Dispositions Location Metropolitan Area Date Sold Gross Proceeds (in millions) Gain on Sale (in millions) 6 Braham Street London April 7, 2014 $ 41.5 $ 15.9 (1) Gross proceeds includes a $9.0 million note receivable, which was collected prior to year-end.

Investment In Unconsolidated 33

Investment In Unconsolidated Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Summary of Financial Information for Joint Ventures	The following tables present summarized financial information for our material joint ventures for the years ended December 31, 2015 , 2014, and 2013 (in thousands): 2015 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 33,757 $ 44,732 $ 102,998 $ 107,807 $ (63,075 ) $ 43,734 $ (15,205 ) $ 28,529 $ 14,171 2020 Fifth Avenue 50.00 % 46,633 55,257 47,000 47,857 7,400 8,474 (1,177 ) 7,297 4,840 33 Chun Choi Street (Hong Kong) 50.00 % 138,742 179,525 — 4,173 175,352 17,700 (5,358 ) 12,342 4,480 PREI ® 20.00 % 419,498 481,175 208,000 293,276 187,898 40,011 (6,157 ) 33,854 15,121 GCEAR 20.00 % 119,952 175,301 102,025 105,197 70,104 19,730 (8,249 ) 11,481 (1,262 ) Total Unconsolidated Joint Ventures $ 758,582 $ 935,990 $ 460,023 $ 558,310 $ 377,679 $ 129,649 $ (36,146 ) $ 93,503 $ 37,350 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 106,107 $ 15,491 2014 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 37,620 $ 42,537 $ 104,523 $ 110,749 $ (68,212 ) $ 39,807 $ (14,707 ) $ 25,100 $ 11,982 2020 Fifth Avenue 50.00 % 47,239 55,123 47,000 47,795 7,328 8,308 (1,086 ) 7,222 4,844 33 Chun Choi Street (Hong Kong) 50.00 % 143,014 165,912 — 10,210 155,702 8,671 (2,625 ) 6,046 2,976 PREI ® 20.00 % 429,358 492,494 208,000 296,480 196,014 39,467 (6,144 ) 33,323 12,378 GCEAR 20.00 % 122,521 186,041 102,025 104,661 81,380 6,050 (2,311 ) 3,739 (1,603 ) Total Unconsolidated Joint Ventures $ 779,752 $ 942,107 $ 461,548 $ 569,895 $ 372,212 $ 102,303 $ (26,873 ) $ 75,430 $ 30,577 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 94,729 $ 13,289 2013 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 33,980 $ 39,674 $ 105,953 $ 111,943 $ (72,269 ) $ 37,625 $ (11,981 ) $ 25,644 $ 12,346 700/750 Central Expressway 50.00 % — — — — — 55 (1 ) 54 58 2020 Fifth Avenue 50.00 % 47,901 53,389 47,000 47,525 5,864 7,513 (522 ) 6,991 5,756 33 Chun Choi Street (Hong Kong) 50.00 % 102,428 122,890 — 8,382 114,508 — (44 ) (44 ) (150 ) PREI ® 20.00 % 400,528 460,062 185,000 276,212 183,850 9,577 (4,479 ) 5,098 2,641 Total Unconsolidated Joint Ventures $ 584,837 $ 676,015 $ 337,953 $ 444,062 $ 231,953 $ 54,770 $ (17,027 ) $ 37,743 $ 20,651 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 70,504 $ 9,796

Acquired Intangible Assets an34

Acquired Intangible Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2015
Acquired Intangible Assets And Liabilities [Abstract]
Summary of Acquired Intangible Assets	The following summarizes our acquired intangible assets (real estate intangibles, comprised of acquired in place lease value, tenant relationship value and trade name along with acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of December 31, 2015 and 2014 . Balance as of (Amounts in thousands) December 31, 2015 December 31, Real Estate Intangibles: Acquired in place lease value: Gross amount $ 901,381 $ 680,419 Accumulated amortization (472,933 ) (452,739 ) Net $ 428,448 $ 227,680 Tenant relationship value: Gross amount $ 734,800 $ — Accumulated amortization (14,495 ) — Net $ 720,305 $ — Trade name: Gross amount $ 7,300 $ — Accumulated amortization (417 ) — Net $ 6,883 $ — Acquired above market leases: Gross amount $ 122,311 $ 126,677 Accumulated amortization (89,613 ) (88,072 ) Net $ 32,698 $ 38,605 Acquired below market leases: Gross amount $ 294,791 $ 282,670 Accumulated amortization (193,677 ) (178,435 ) Net $ 101,114 $ 104,235
Schedule of Below Market Lease Future Amortization	Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years and thereafter, commencing January 1, 2016 is as follows: (Amounts in thousands) 2016 $ 8,403 2017 6,867 2018 5,222 2019 5,285 2020 7,351 Thereafter 35,288 Total $ 68,416
Schedule of Finite-Lived Intangible Assets Future Amortization Expense	Estimated annual amortization of acquired in place lease value for each of the five succeeding years and thereafter, commencing January 1, 2016 is as follows: (Amounts in thousands) 2016 $ 53,391 2017 48,879 2018 46,636 2019 44,150 2020 40,108 Thereafter 195,284 Total $ 428,448 Estimated annual amortization of customer contracts and trade names for each of the five succeeding years and thereafter, commencing January 1, 2016 is as follows: (Amounts in thousands) 2016 $ 65,261 2017 65,261 2018 65,261 2019 64,844 2020 63,436 Thereafter 403,125 Total $ 727,188

Debt of the Operating Partner35

Debt of the Operating Partnership (Tables) - Digital Realty Trust, L.P.	12 Months Ended
	Dec. 31, 2015
Debt Instrument [Line Items]
Summary of Outstanding Indebtedness of the Operating Partnership	A summary of outstanding indebtedness of the Operating Partnership as of December 31, 2015 and 2014 is as follows (in thousands): Indebtedness Interest Rate at December 31, 2015 Maturity Date Principal Outstanding December 31, 2015 Principal Outstanding December 31, 2014 Global revolving credit facility Various (1) Nov 3, 2017 $ 967,884 (2) $ 525,951 (2) Unsecured term loan Various (3)(9) Apr 16, 2017 924,568 (4) 976,600 (4) Unsecured senior notes: Prudential Shelf Facility: Series C 9.680% Jan 6, 2016 25,000 (5) 25,000 Series D 4.570% Jan 20, 2015 — 50,000 Series E 5.730% Jan 20, 2017 50,000 50,000 Series F 4.500% Feb 3, 2015 — 17,000 Total Prudential Shelf Facility 75,000 142,000 Senior Notes: 4.50% notes due 2015 4.500% Jul 15, 2015 — 375,000 5.875% notes due 2020 5.875% Feb 1, 2020 500,000 500,000 3.40% notes due 2020 3.400% Oct 1, 2020 500,000 — 5.25% notes due 2021 5.250% Mar 15, 2021 400,000 400,000 3.95% notes due 2022 3.950% Jul 1, 2022 500,000 — 3.625% notes due 2022 3.625% Oct 1, 2022 300,000 300,000 4.75% notes due 2023 4.750% Oct 13, 2023 442,080 (10) 467,310 (10) 4.25% notes due 2025 4.250% Jan 17, 2025 589,440 (10) 623,080 (10) 4.75% notes due 2025 4.750% Oct 1, 2025 450,000 — Unamortized discounts (17,914 ) (15,632 ) Total senior notes, net of discount 3,663,606 2,649,758 Total unsecured senior notes, net of discount 3,738,606 2,791,758 Mortgage loans: 200 Paul Avenue 1-4 (7) 5.74% Oct 8, 2015 — 68,665 2045 & 2055 Lafayette Street (7) 5.93% Feb 6, 2017 61,437 62,563 34551 Ardenwood Boulevard 1-4 (7) 5.95% Nov 11, 2016 50,477 51,339 1100 Space Park Drive (7) 5.89% Dec 11, 2016 50,423 51,295 600 West Seventh Street 5.80% Mar 15, 2016 46,000 (6) 47,825 150 South First Street (7) 6.30% Feb 6, 2017 48,484 49,316 2334 Lundy Place (7) 5.96% Nov 11, 2016 36,714 37,340 8025 North Interstate 35 4.09% Mar 6, 2016 5,789 (8) 6,057 731 East Trade Street 8.22% Jul 1, 2020 3,420 3,836 Unamortized net premiums 439 582 Total mortgage loans, including premiums 303,183 378,818 Total indebtedness $ 5,934,241 $ 4,673,127 (1) The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 110 basis points, which is based on the credit rating of our long-term debt. An annual facility fee of 20 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the total commitment amount of the facility. Two six -month extensions are available, which we may exercise if certain conditions are met. (2) Balances as of December 31, 2015 and December 31, 2014 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2015 Weighted-average Balance as of December 31, 2014 Weighted-average Floating Rate Borrowing (a) U.S. dollar ($) $ 274,000 1.46 % $ 90,000 1.27 % British pound sterling (£) 95,784 (c) 1.61 % 132,716 1.61 % Euro (€) 280,565 (c) 0.90 % 58,071 (d) 1.13 % Australian dollar (AUD) 96,831 (c) 3.16 % 72,676 (d) 3.74 % Hong Kong dollar (HKD) 86,082 (c) 1.33 % 79,336 (d) 1.34 % Japanese yen (JPY) 14,304 (c) 1.15 % 13,201 (d) 1.17 % Singapore dollar (SGD) 49,132 (c) 1.92 % 6,565 — Canadian dollar (CAD) 71,186 (c) 1.95 % 62,386 (d) 2.39 % Total $ 967,884 1.53 % $ 514,951 1.84 % Base Rate Borrowing (b) U.S. dollar ($) $ — — % $ 11,000 3.35 % Total borrowings $ 967,884 1.53 % $ 525,951 1.87 % (a) The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit rating of our long-term debt. (b) The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit rating of our long-term debt. (c) Based on exchange rates of $1.47 to £1.00, $1.09 to €1.00 , $0.73 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.70 to 1.00 SGD and $0.72 to 1.00 CAD, respectively, as of December 31, 2015 . (d) Based on exchange rates $1.56 to £1.00, of $1.21 to €1.00 , $0.82 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.75 to 1.00 SGD and $0.86 to 1.00 CAD, respectively, as of December 31, 2014 . (3) Interest rates are based on our current senior unsecured debt ratings and are 120 basis points over the applicable index for floating rate advances. Two six -month extensions are available, which we may exercise if certain conditions are met. (4) Balances as of December 31, 2015 and December 31, 2014 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2015 Weighted-average Balance as of December 31, 2014 Weighted-average U.S. dollar ($) $ 410,905 1.51 % (b) $ 410,905 1.36 % (d) Singapore dollar (SGD) 161,070 (a) 2.16 % (b) 172,426 (c) 1.45 % (d) British pound sterling (£) 178,195 (a) 1.78 % 188,365 (c) 1.76 % Euro (€) 99,061 (a) 1.00 % 120,375 (c) 1.22 % Australian dollar (AUD) 75,337 (a) 3.27 % 84,529 (c) 3.98 % Total $ 924,568 1.76 % (b) $ 976,600 1.66 % (d) (a) Based on exchange rates of $0.70 to 1.00 SGD, $1.47 to £1.00 , $1.09 to €1.00 and $0.73 to 1.00 AUD, respectively, as of December 31, 2015 . (b) As of December 31, 2015 , the weighted-average interest rate reflecting interest rate swaps was 1.90% (U.S. dollar), 2.19% (Singapore dollar) and 1.94% (Total). See Note 14 for further discussion on interest rate swaps. (c) Based on exchange rates of $0.75 to 1.00 SGD, $1.56 to £1.00 , $1.21 to €1.00 and $0.82 to 1.00 AUD, respectively, as of December 31, 2014 . (d) As of December 31, 2014 , the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.01% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps. (5) This note was paid in full at maturity in January 2016. (6) This mortgage loan was paid in full in February 2016. (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) This mortgage loan was paid in full in January 2016 (9) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar and Singapore dollar tranches of the unsecured term loan. See note 14 for further information. (10) Based on exchange rate of $1.47 to £1.00 as of December 31, 2015 and $1.56 to £1.00 as of December 31, 2014.
Schedule of Debt Maturities and Principal Maturities	The table below summarizes our debt maturities and principal payments as of December 31, 2015 (in thousands): Global Revolving Unsecured Prudential Senior Notes (2) Mortgage Total 2016 $ — $ — $ 25,000 $ — $ 191,979 $ 216,979 2017 967,884 924,568 50,000 — 108,395 2,050,847 2018 — — — — 593 593 2019 — — — — 644 644 2020 — — — 1,000,000 1,133 1,001,133 Thereafter — — — 2,681,520 — 2,681,520 Subtotal $ 967,884 $ 924,568 $ 75,000 $ 3,681,520 $ 302,744 $ 5,951,716 Unamortized discount — — — (17,914 ) — (17,914 ) Unamortized premium — — — — 439 439 Total $ 967,884 $ 924,568 $ 75,000 $ 3,663,606 $ 303,183 $ 5,934,241 (1) Subject to two six -month extension options exercisable by us. The bank group is obligated to grant the extension options provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility and the unsecured term loan, as applicable.

Income Per Share (Tables)

Income Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Summary of Basic and Diluted Earnings per Share	The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts): Year Ended December 31, 2015 2014 2013 Net income available to common stockholders $ 217,266 $ 132,718 $ 271,583 Weighted average shares outstanding—basic 138,247,606 133,369,047 127,941,134 Potentially dilutive common shares: Stock options 20,424 30,434 61,375 Unvested incentive units 95,746 90,449 125,132 Market performance-based awards 501,645 147,305 — Weighted average shares outstanding—diluted 138,865,421 133,637,235 128,127,641 Income per share: Basic $ 1.57 $ 1.00 $ 2.12 Diluted $ 1.56 $ 0.99 $ 2.12
Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share	We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2015 2014 2013 Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. 2,658,291 2,753,614 2,521,400 Potentially dilutive 2029 Debentures — 1,957,963 6,649,510 Potentially dilutive Series D Cumulative Convertible — — 470,748 Potentially dilutive Series E Cumulative Redeemable Preferred Stock 4,301,438 4,956,175 5,176,886 Potentially dilutive Series F Cumulative Redeemable Preferred Stock 2,727,962 3,143,195 3,283,169 Potentially dilutive Series G Cumulative Redeemable Preferred Stock 3,730,042 4,297,805 3,898,376 Potentially dilutive Series H Cumulative Redeemable Preferred Stock 5,465,987 4,320,495 — Potentially dilutive Series I Cumulative Redeemable Preferred Stock 1,235,063 — — 20,118,783 21,429,247 22,000,089

Income Per Unit (Tables)

Income Per Unit (Tables)	12 Months Ended
	Dec. 31, 2015
Class of Stock [Line Items]
Summary of Basic and Diluted Earnings per Share	The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts): Year Ended December 31, 2015 2014 2013 Net income available to common stockholders $ 217,266 $ 132,718 $ 271,583 Weighted average shares outstanding—basic 138,247,606 133,369,047 127,941,134 Potentially dilutive common shares: Stock options 20,424 30,434 61,375 Unvested incentive units 95,746 90,449 125,132 Market performance-based awards 501,645 147,305 — Weighted average shares outstanding—diluted 138,865,421 133,637,235 128,127,641 Income per share: Basic $ 1.57 $ 1.00 $ 2.12 Diluted $ 1.56 $ 0.99 $ 2.12
Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share	We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2015 2014 2013 Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. 2,658,291 2,753,614 2,521,400 Potentially dilutive 2029 Debentures — 1,957,963 6,649,510 Potentially dilutive Series D Cumulative Convertible — — 470,748 Potentially dilutive Series E Cumulative Redeemable Preferred Stock 4,301,438 4,956,175 5,176,886 Potentially dilutive Series F Cumulative Redeemable Preferred Stock 2,727,962 3,143,195 3,283,169 Potentially dilutive Series G Cumulative Redeemable Preferred Stock 3,730,042 4,297,805 3,898,376 Potentially dilutive Series H Cumulative Redeemable Preferred Stock 5,465,987 4,320,495 — Potentially dilutive Series I Cumulative Redeemable Preferred Stock 1,235,063 — — 20,118,783 21,429,247 22,000,089
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Summary of Basic and Diluted Earnings per Share	The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts): Year Ended December 31, 2015 2014 2013 Net income available to common unitholders $ 220,343 $ 135,485 $ 276,949 Weighted average units outstanding—basic 140,905,897 136,122,661 130,462,534 Potentially dilutive common units: Stock options 20,424 30,434 61,375 Unvested incentive units 95,746 90,449 125,132 Market performance-based awards 501,645 147,305 — Weighted average units outstanding—diluted 141,523,712 136,390,849 130,649,041 Income per unit: Basic $ 1.56 $ 1.00 $ 2.12 Diluted $ 1.55 $ 0.99 $ 2.12
Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share	We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2015 2014 2013 Potentially dilutive 2029 Debentures — 1,957,963 6,649,510 Potentially dilutive Series D Cumulative Convertible Preferred Units — — 470,748 Potentially dilutive Series E Cumulative Redeemable Preferred Units 4,301,438 4,956,175 5,176,886 Potentially dilutive Series F Cumulative Redeemable Preferred Units 2,727,962 3,143,195 3,283,169 Potentially dilutive Series G Cumulative Redeemable Preferred Units 3,730,042 4,297,805 3,898,376 Potentially dilutive Series H Cumulative Redeemable Preferred Units 5,465,987 4,320,495 — Potentially dilutive Series I Cumulative Redeemable Preferred Units 1,235,063 — — 17,460,492 18,675,633 19,478,689

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Deferred Tax Assets and Liabilities	Deferred income tax assets and liabilities as of December 31, 2015 and 2014 were as follows (in thousands): 2015 2014 Gross deferred income tax assets: Net operating loss carryforwards $ 123,091 $ 74,285 Basis difference - real estate property 103,789 42,989 Basis difference - intangibles 2,002 8,817 Other - temporary differences 9,406 9,310 Total gross deferred income tax assets 238,288 135,401 Valuation allowance (35,266 ) (23,357 ) Total deferred income tax assets, net of valuation allowance 203,022 112,044 Gross deferred income tax liabilities: Basis difference - real estate property 273,155 202,499 Basis difference - intangibles 14,374 24,712 Straight-line rent 14,269 15,561 Other-temporary differences 32,420 7,220 Total gross deferred income tax liabilities 334,218 249,992 Net deferred income tax liabilities $ 131,196 $ 137,948

Equity and Accumulated Other 39

Equity and Accumulated Other Comprehensive Loss, Net (Tables)	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Ownership Interest In The 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 December 31, 2015 and 2014 : December 31, 2015 December 31, 2014 Number of units Percentage of total Number of units Percentage of total Digital Realty Trust, Inc. 146,384,247 98.1 % 135,626,255 97.8 % Noncontrolling interests consist of: Common units held by third parties 1,421,314 1.0 % 1,463,814 1.1 % Incentive units held by employees and directors (see note 13) 1,412,012 0.9 % 1,549,847 1.1 % 149,217,573 100.0 % 138,639,916 100.0 %
Summary of Activity For Noncontrolling Interests In The Operating Partnership	The following table shows activity for the noncontrolling interests in the Operating Partnership for the years ended December 31, 2015 , 2014 and 2013 : Common Incentive Total As of December 31, 2012 1,515,814 1,335,586 2,851,400 Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1) (24,000 ) — (24,000 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) — (33,138 ) (33,138 ) Vesting of Class C Units (2007 Grant) — (19,483 ) (19,483 ) Grant of incentive units to employees and directors — 192,242 192,242 As of December 31, 2013 1,491,814 1,475,207 2,967,021 Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1) (28,000 ) — (28,000 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) — (106,073 ) (106,073 ) Cancellation of incentive units held by employees and directors — (18,773 ) (18,773 ) Grant of incentive units to employees and directors 199,486 199,486 As of December 31, 2014 1,463,814 1,549,847 3,013,661 Redemption of common units for shares of Digital Realty Trust, Inc. common stock(1) (42,500 ) — (42,500 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock(1) — (113,508 ) (113,508 ) Cancellation of incentive units held by employees and directors — (151,579 ) (151,579 ) Grant of incentive units to employees and directors — 127,252 127,252 As of December 31, 2015 1,421,314 1,412,012 2,833,326 (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 consolidated balance sheet of Digital Realty Trust, Inc.
Schedule of Dividends/Distributions	We have declared and paid the following dividends on our common and preferred stock for the years ended December 31, 2015 , 2014 and 2013 (in thousands): Date dividend declared Dividend payable date Series D Preferred Stock Series E Preferred Stock Series F Preferred Stock Series G Preferred Stock Series H Preferred Stock Series I Preferred Stock Common February 12, 2013 March 29, 2013 $ — (1) $ 5,031 $ 3,023 $ — $ — $ — $ 100,165 (2) May 1, 2013 June 28, 2013 — 5,031 3,023 3,345 (3) — — 100,169 (2) July 23, 2013 September 30, 2013 — 5,031 3,023 3,672 — — 100,180 (2) October 23, 2013 December 31, 2013 for Preferred Stock; — 5,031 3,023 3,672 — — 100,187 (2) $ — $ 20,124 $ 12,092 $ 10,689 $ — $ — $ 400,701 February 11, 2014 March 31, 2014 $ — $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 106,743 (4) April 29, 2014 June 30, 2014 — 5,031 3,023 3,672 7,104 (5) — 112,357 (4) July 21, 2014 September 30, 2014 — 5,031 3,023 3,672 6,730 — 112,465 (4) November 4, 2014 December 31, 2014 for Preferred Stock; — 5,031 3,023 3,672 6,730 — 112,538 (4) $ — $ 20,124 $ 12,092 $ 14,688 $ 20,564 $ — $ 444,103 February 25, 2015 March 31, 2015 $ — $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ — $ 115,419 (6) May 12, 2015 June 30, 2015 — 5,031 3,023 3,672 6,730 — 115,458 (6) August 11, 2015 September 30, 2015 — 5,031 3,023 3,672 6,730 — 115,454 (6) November 12, 2015 December 31, 2015 for Preferred Stock; — 5,031 3,023 3,672 6,730 5,600 (7) 124,417 (6) $ — $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 470,748 Annual rate of dividend per share $ 1.37500 $ 1.75000 $ 1.65625 $ 1.46875 $ 1.84375 $ 1.58800 (1) Effective February 26, 2013, Digital Realty Trust, Inc. converted all outstanding shares of its series D preferred stock into shares of its common stock in accordance with the terms of the series D preferred stock. Each share of series D preferred stock was converted into 0.6360 share of common stock of Digital Realty Trust, Inc. (2) $ 3.120 annual rate of dividend per share. (3) Represents a pro rata dividend from and including the original issue date to and including June 30, 2013. (4) $3.320 annual rate of dividend per share. (5) Represents a pro rata dividend from and including the original issue date to and including June 30, 2014. (6) $3.400 annual rate of dividend per share. (7) Represents a pro rata dividend from and including the original issue date to and including December 31, 2015.
Schedule of Accumulated Other Comprehensive Income (Loss)	The accumulated balances for each item within other comprehensive income (loss), net are as follows (in thousands): Foreign Cash flow Accumulated Balance as of December 31, 2013 $ 11,745 $ (1,054 ) $ 10,691 Net current period change (51,312 ) (7,775 ) (59,087 ) Reclassification to interest expense from interest rate swaps — 3,350 3,350 Balance as of December 31, 2014 $ (39,567 ) $ (5,479 ) $ (45,046 ) Net current period change (50,775 ) (3,338 ) (54,113 ) Reclassification to interest expense from interest rate swaps — 2,569 2,569 Balance as of December 31, 2015 $ (90,342 ) $ (6,248 ) $ (96,590 )

Capital and Accumulated Other40

Capital and Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2015
Class of Stock [Line Items]
Schedule of Dividends/Distributions	We have declared and paid the following dividends on our common and preferred stock for the years ended December 31, 2015 , 2014 and 2013 (in thousands): Date dividend declared Dividend payable date Series D Preferred Stock Series E Preferred Stock Series F Preferred Stock Series G Preferred Stock Series H Preferred Stock Series I Preferred Stock Common February 12, 2013 March 29, 2013 $ — (1) $ 5,031 $ 3,023 $ — $ — $ — $ 100,165 (2) May 1, 2013 June 28, 2013 — 5,031 3,023 3,345 (3) — — 100,169 (2) July 23, 2013 September 30, 2013 — 5,031 3,023 3,672 — — 100,180 (2) October 23, 2013 December 31, 2013 for Preferred Stock; — 5,031 3,023 3,672 — — 100,187 (2) $ — $ 20,124 $ 12,092 $ 10,689 $ — $ — $ 400,701 February 11, 2014 March 31, 2014 $ — $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 106,743 (4) April 29, 2014 June 30, 2014 — 5,031 3,023 3,672 7,104 (5) — 112,357 (4) July 21, 2014 September 30, 2014 — 5,031 3,023 3,672 6,730 — 112,465 (4) November 4, 2014 December 31, 2014 for Preferred Stock; — 5,031 3,023 3,672 6,730 — 112,538 (4) $ — $ 20,124 $ 12,092 $ 14,688 $ 20,564 $ — $ 444,103 February 25, 2015 March 31, 2015 $ — $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ — $ 115,419 (6) May 12, 2015 June 30, 2015 — 5,031 3,023 3,672 6,730 — 115,458 (6) August 11, 2015 September 30, 2015 — 5,031 3,023 3,672 6,730 — 115,454 (6) November 12, 2015 December 31, 2015 for Preferred Stock; — 5,031 3,023 3,672 6,730 5,600 (7) 124,417 (6) $ — $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 470,748 Annual rate of dividend per share $ 1.37500 $ 1.75000 $ 1.65625 $ 1.46875 $ 1.84375 $ 1.58800 (1) Effective February 26, 2013, Digital Realty Trust, Inc. converted all outstanding shares of its series D preferred stock into shares of its common stock in accordance with the terms of the series D preferred stock. Each share of series D preferred stock was converted into 0.6360 share of common stock of Digital Realty Trust, Inc. (2) $ 3.120 annual rate of dividend per share. (3) Represents a pro rata dividend from and including the original issue date to and including June 30, 2013. (4) $3.320 annual rate of dividend per share. (5) Represents a pro rata dividend from and including the original issue date to and including June 30, 2014. (6) $3.400 annual rate of dividend per share. (7) Represents a pro rata dividend from and including the original issue date to and including December 31, 2015.
Schedule of Accumulated Other Comprehensive Income (Loss)	The accumulated balances for each item within other comprehensive income (loss), net are as follows (in thousands): Foreign Cash flow Accumulated Balance as of December 31, 2013 $ 11,745 $ (1,054 ) $ 10,691 Net current period change (51,312 ) (7,775 ) (59,087 ) Reclassification to interest expense from interest rate swaps — 3,350 3,350 Balance as of December 31, 2014 $ (39,567 ) $ (5,479 ) $ (45,046 ) Net current period change (50,775 ) (3,338 ) (54,113 ) Reclassification to interest expense from interest rate swaps — 2,569 2,569 Balance as of December 31, 2015 $ (90,342 ) $ (6,248 ) $ (96,590 )
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Schedule of Dividends/Distributions	All distributions on our units are at the discretion of Digital Realty Trust, Inc.’s board of directors. We have declared and paid the following distributions on our common and preferred units for the years ended December 31, 2015 , 2014 and 2013 (in thousands): Date distribution Distribution payable date Series D Preferred Units Series E Preferred Units Series F Preferred Units Series G Preferred Units Series H Preferred Units Series I Preferred Units Common February 12, 2013 March 29, 2013 $ — (1) $ 5,031 $ 3,023 $ — $ — $ — $ 102,506 (2) May 1, 2013 June 28, 2013 — 5,031 3,023 3,345 (3) — — 102,507 (2) July 23, 2013 September 30, 2013 — 5,031 3,023 3,672 — — 102,506 (2) October 23, 2013 December 31, 2013 for Preferred Units; — 5,031 3,023 3,672 — — 102,509 (2) $ — $ 20,124 $ 12,092 $ 10,689 $ — $ — $ 410,028 February 11, 2014 March 31, 2014 $ — $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 109,378 (4) April 29, 2014 June 30, 2014 — 5,031 3,023 3,672 7,104 (5) — 115,008 (4) July 21, 2014 September 30, 2014 — 5,031 3,023 3,672 6,730 — 115,012 (4) November 4, 2014 December 31, 2014 for Preferred Units; — 5,031 3,023 3,672 6,730 — 115,016 (4) $ — $ 20,124 $ 12,092 $ 14,688 $ 20,564 $ — $ 454,414 February 25, 2015 March 31, 2015 $ — $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ — $ 117,896 (6) May 12, 2015 June 30, 2015 — 5,031 3,023 3,672 6,730 — 117,938 (6) August 11, 2015 September 30, 2015 — 5,031 3,023 3,672 6,730 — 117,962 (6) November 12, 2015 December 31, 2015 for Preferred Units; — 5,031 3,023 3,672 6,730 5,600 (7) 126,827 (6) $ — $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 480,623 Annual rate of distribution per unit $1.375 $1.750 $1.656 $1.469 $1.844 $1.588 (1) Effective February 26, 2013, in connection with the conversion of the series D preferred stock by Digital Realty Trust, Inc., all of the outstanding series D preferred units were converted into common units in accordance with the terms of the series D preferred units. Each series D preferred unit was converted into 0.6360 common unit of the Operating Partnership. (2) $ 3.120 annual rate of distribution per unit. (3) Represents a pro rata distribution from and including the original issue date to and including June 30, 2013. (4) $3.320 annual rate of distribution per unit. (5) Represents a pro rata distribution from and including the original issue date to and including June 30, 2014. (6) $3.400 annual rate of distribution per unit. (7) Represents a pro rata distribution from and including the original issue date to and including December 31, 2015.
Schedule of Accumulated Other Comprehensive Income (Loss)	The accumulated balances for each item within other comprehensive income (loss) are as follows (in thousands): Foreign Cash flow Accumulated Balance as of December 31, 2013 $ 10,235 $ (1,778 ) $ 8,457 Net current period change (52,373 ) (7,936 ) (60,309 ) Reclassification to interest expense from interest rate swaps — 3,419 3,419 Balance as of December 31, 2014 $ (42,138 ) $ (6,295 ) $ (48,433 ) Net current period change (51,745 ) (3,407 ) (55,152 ) Reclassification to interest expense from interest rate swaps — 2,621 2,621 Balance as of December 31, 2015 $ (93,883 ) $ (7,081 ) $ (100,964 )

Incentive Plan (Tables)

Incentive Plan (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Performance-based Units Activity	Below is a summary of our long-term incentive unit activity for the year ended December 31, 2015 . Unvested Long-term Incentive Units Units Weighted-Average Unvested, beginning of period 314,415 $ 59.34 Granted 127,252 66.99 Vested (143,898 ) 59.65 Cancelled or expired (16,878 ) 58.13 Unvested, end of period 280,891 62.72
Schedule of Share-based Compensation, Performance Based Awards	The awards, which were determined to contain a market condition, utilize total shareholder return, or TSR, over a three -year measurement period as the market performance metric. Awards will vest based on the Company’s TSR relative to the MSCI US REIT Index, or RMS, over a three -year market performance period, or the Market Performance Period, commencing in January 2014 or January 2015, as applicable (or, if earlier, ending on the date on which a change in control of the Company occurs), subject to continued services. Vesting with respect to the market condition is measured based on the difference between the Company’s TSR percentage and the TSR percentage of the RMS, or the RMS Relative Market Performance. In the event that the RMS Relative Market Performance during the Market Performance Period is achieved at the “threshold,” “target” or “high” level as set forth below, the awards will become vested as to the market condition with respect to the percentage of Class D units or RSUs, as applicable, set forth below: Level RMS Relative Market Performance (2014 Awards) RMS Relative Market Performance Vesting Percentage Below Threshold Level < 0 basis points < -300 basis points 0 % Threshold Level 0 basis points -300 basis points 25 % Target Level 325 basis points 100 basis points 50 % High Level > 650 basis points > 500 basis points 100 %
Summary of Incentive Award Plan Stock Options	The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the year ended December 31, 2015 : Year Ended December 31, 2015 Shares Weighted average exercise price Options outstanding, beginning of period 80,933 $ 37.25 Exercised (29,311 ) 30.58 Options outstanding, end of period 51,622 $ 41.04 Exercisable, end of period 51,622 $ 41.04
Summary of Stock Option Outstanding And Exercisable	The following table summarizes information about stock options outstanding and exercisable as of December 31, 2015 : Options outstanding and exercisable Exercise price Number outstanding Weighted average remaining contractual life (years) Weighted average exercise price Aggregate intrinsic value $33.18 4,175 0.84 $ 33.18 $ 177,187 $41.73 47,447 1.34 41.73 1,607,979 51,622 1.30 $ 41.04 $ 1,785,166
Schedule of Restricted Stock Activity	Below is a summary of our restricted stock activity for the year ended December 31, 2015 . Unvested Restricted Stock Shares Weighted-Average Unvested, beginning of period 302,298 $ 57.10 Granted (1) 109,780 66.90 Vested (99,988 ) 59.57 Cancelled or expired (41,376 ) 56.85 Unvested, end of period 270,714 60.20 (1) All restricted stock awards granted in 2015 are subject only to service conditions.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	As of December 31, 2015 and December 31, 2014, 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 As of As of Type of Strike Effective Date Expiration As of As of Currently-paying contracts $ 335,905 (1) $ 410,905 (1) Swap 0.717 Various Various $ (357 ) $ (241 ) 133,579 (2) 142,965 (2) Swap 0.925 July 17, 2012 April 18, 2017 1,500 669 469,484 553,870 1,143 428 Forward-starting contracts — (3) 150,000 Forward-starting Swap 2.091 July 15, 2014 July 15, 2019 — (2,837 ) Total $ 469,484 $ 703,870 $ 1,143 $ (2,409 ) (1) Represents the U.S. dollar tranche of the unsecured term loan. (2) Represents a portion of the Singapore dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.70 to 1.00 SGD as of December 31, 2015 and $0.75 to 1.00 SGD as of December 31, 2014. (3) In January 2014, we entered into a forward-starting five -year swap contract to protect the Company against adverse fluctuations in interest rates by reducing its exposure to variability in cash flows relating to interest payments on a forecasted issuance of debt. The accrual period of the swap contract was designed to match the tenor of the planned debt issuance. In the fourth quarter of 2014, changes in the forecasted transaction resulted in the discontinuation of cash flow hedge accounting. As such, changes in the fair value of the forward starting swap were recognized in earnings, within the other income (expense) line item. During 2014, the total net gain recognized on the forward-starting swap was approximately $0.8 million , and on January 13, 2015, we cash settled the forward starting swap for approximately $5.7 million , including accrued interest.

Fair Value of Instruments (Tabl

Fair Value of Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Estimated Fair Value and Carrying Amounts	As of December 31, 2015 and December 31, 2014 , the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured term loan, unsecured senior notes, exchangeable senior debentures and mortgage loans were as follows (in thousands): Categorization As of December 31, 2015 As of December 31, 2014 Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Global revolving credit facility (1) Level 2 $ 967,884 $ 967,884 $ 525,951 $ 525,951 Unsecured term loan (2) Level 2 924,568 924,568 976,600 976,600 Unsecured senior notes (3)(4) Level 2 3,868,979 3,738,606 2,968,073 2,791,758 Mortgage loans (3) Level 2 313,717 303,183 399,569 378,818 $ 6,075,148 $ 5,934,241 $ 4,870,193 $ 4,673,127 (1) The carrying value of our global revolving credit facility approximates estimated fair value, due to the variability of interest rates and the stability of our credit rating. (2) The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates and the stability of our credit rating. (3) Valuations for our unsecured senior notes and mortgage loans are determined based on the expected future payments discounted at risk-adjusted rates. The 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 3.950% 2022 Notes, 3.625% 2022 Notes, 2023 Notes, 4.750% 2025 Notes and 2025 Notes are valued based on quoted market prices. (4) The carrying value of the 2015 Notes, 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 2022 Notes, 3.950% 2022 Notes, 2023 Notes and 2025 Notes are net of discount of $17.9 million and $15.6 million in the aggregate as of December 31, 2015 and December 31, 2014 , respectively.

Tenant Leases (Tables)

Tenant Leases (Tables)	12 Months Ended
	Dec. 31, 2015
Leases [Abstract]
Schedule of Future Minimum Lease Payments to be Received	The future minimum lease payments to be received (excluding operating expense reimbursements) by us as of December 31, 2015 , under non-cancelable operating leases are as follows (in thousands): 2016 $ 1,379,451 2017 1,260,324 2018 1,125,712 2019 988,289 2020 769,150 Thereafter 2,948,210 Total $ 8,471,136

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments	The minimum commitment under these leases, excluding the fully prepaid ground leases, as of December 31, 2015 was as follows (in thousands): 2016 $ 54,713 2017 62,581 2018 65,417 2019 69,709 2020 72,433 Thereafter 699,590 Total $ 1,024,443

Quarterly Financial Informati46

Quarterly Financial Information (Digital Realty Trust, Inc.) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Summary of Selected Quarterly Financial Data	The tables below reflect selected quarterly information for the years ended December 31, 2015 and 2014 . Certain amounts have been reclassified to conform to the current year presentation (in thousands, except per share amounts). Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 500,443 $ 435,989 $ 420,295 $ 406,609 Net income (loss) (16,573 ) 57,842 137,997 122,325 Net income (loss) attributable to Digital Realty Trust, Inc. (15,983 ) 56,978 135,511 120,183 Preferred stock dividends 24,056 18,456 18,456 18,455 Net income (loss) available to common stockholders (40,039 ) 38,522 117,055 101,728 Basic net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 412,216 $ 412,186 $ 401,446 $ 390,590 Net income (loss) (34,795 ) 130,161 61,332 46,717 Net income (loss) attributable to (33,813 ) 127,769 60,339 45,912 Preferred stock dividends 18,455 18,455 18,829 11,726 Net income (loss) available to common stockholders (52,268 ) 109,314 41,510 34,186 Basic net income (loss) per share available to $ (0.39 ) $ 0.81 $ 0.31 $ 0.27 Diluted net income (loss) per share available to $ (0.39 ) $ 0.80 $ 0.31 $ 0.26

Quarterly Financial Informati47

Quarterly Financial Information (Digital Realty Trust, L.P.) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information [Line Items]
Summary of Selected Quarterly Financial Data	The tables below reflect selected quarterly information for the years ended December 31, 2015 and 2014 . Certain amounts have been reclassified to conform to the current year presentation (in thousands, except per share amounts). Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 500,443 $ 435,989 $ 420,295 $ 406,609 Net income (loss) (16,573 ) 57,842 137,997 122,325 Net income (loss) attributable to Digital Realty Trust, Inc. (15,983 ) 56,978 135,511 120,183 Preferred stock dividends 24,056 18,456 18,456 18,455 Net income (loss) available to common stockholders (40,039 ) 38,522 117,055 101,728 Basic net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income (loss) per share available to $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Three Months Ended December 31, September 30, June 30, March 31, Total operating revenues $ 412,216 $ 412,186 $ 401,446 $ 390,590 Net income (loss) (34,795 ) 130,161 61,332 46,717 Net income (loss) attributable to (33,813 ) 127,769 60,339 45,912 Preferred stock dividends 18,455 18,455 18,829 11,726 Net income (loss) available to common stockholders (52,268 ) 109,314 41,510 34,186 Basic net income (loss) per share available to $ (0.39 ) $ 0.81 $ 0.31 $ 0.27 Diluted net income (loss) per share available to $ (0.39 ) $ 0.80 $ 0.31 $ 0.26

Subsequent Events (Tables)

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Schedule of Dividends Declared and Distributions Per Unit	On February 17, 2016, the Company declared the following dividends per share. The Operating Partnership will make an equivalent distribution per unit. Share / Unit Class Series E Preferred Stock and Unit Series F Preferred Stock and Unit Series G Preferred Stock and Unit Series H Series I Preferred Stock and Unit Common stock and common unit Dividend and distribution amount $ 0.437500 $ 0.414063 $ 0.367188 $ 0.460938 $ 0.396875 $ 0.880000 Dividend and distribution payable date March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016 Dividend and distribution payable to holders of record on March 15, 2016 March 15, 2016 March 15, 2016 March 15, 2016 March 15, 2016 March 15, 2016 Annual equivalent rate of dividend and distribution $ 1.750 $ 1.656 $ 1.469 $ 1.844 $ 1.588 $ 3.520

Organization and Description 49

Organization and Description of Business (Narrative) (Details)	Dec. 31, 2015property
Organization and Description of Business [Line Items]
Number of real estate properties	139
Common Interest
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	98.10%
Preferred Interest
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	100.00%
North America
Organization and Description of Business [Line Items]
Number of real estate properties	110
Europe
Organization and Description of Business [Line Items]
Number of real estate properties	23
Australia
Organization and Description of Business [Line Items]
Number of real estate properties	3
Asia
Organization and Description of Business [Line Items]
Number of real estate properties	3
Telx
Organization and Description of Business [Line Items]
Number of real estate properties	8
Wholly Owned Properties
Organization and Description of Business [Line Items]
Number of real estate properties	2
Leased Properties
Organization and Description of Business [Line Items]
Number of real estate properties	6
Unconsolidated Properties
Organization and Description of Business [Line Items]
Number of real estate properties	14

Summary of Significant Accoun50

Summary of Significant Accounting Policies (Narrative) (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2015USD ($)property	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2014USD ($)property	Sep. 30, 2014USD ($)	Jun. 30, 2014USD ($)	Mar. 31, 2014USD ($)	Dec. 31, 2015USD ($)propertysegment	Dec. 31, 2014USD ($)property	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)
Summary Of Significant Accounting Policies [Line Items]
Period in which short-term investment become cash equivalents									90 days
Number of real estate properties | property	139								139
Impairment of investments in real estate									$ 0	$ 126,470,000	$ 0
Interest capitalized									12,900,000	20,400,000	26,300,000
Compensation costs, leasing and construction activities									56,800,000	50,100,000	38,400,000
Cash flows from capitalized leasing costs									49,900,000	49,000,000	57,500,000
Deferred leasing costs, net	$ 236,000,000				$ 229,300,000				236,000,000	229,300,000
Gain (loss) on cash flow hedge ineffectiveness									(1,600,000)	800,000	0
Assets or liabilities for uncertain tax positions	0				0				0	0
Interest or penalties from uncertain tax positions									0	0	0
Asset retirement obligations	1,300,000				1,700,000				$ 1,300,000	1,700,000
Number of reportable segments | segment									1
Operating revenue	500,443,000	$ 435,989,000	$ 420,295,000	$ 406,609,000	412,216,000	$ 412,186,000	$ 401,446,000	$ 390,590,000	$ 1,763,336,000	1,616,438,000	1,482,259,000
Rental property operating and maintenance									549,885,000	503,140,000	456,596,000
Other expense									60,943,000	3,070,000	827,000
Cash and cash equivalents	57,053,000				34,814,000				57,053,000	34,814,000	50,080,000	$ 52,467,000
Restricted cash	18,009,000				18,062,000				18,009,000	18,062,000
Net cash provided by (used in) financing activities									1,749,029,000	(26,974,000)	401,832,000
Reclassification
Summary Of Significant Accounting Policies [Line Items]
Rental property operating and maintenance										(400,000)	(800,000)
Other expense										400,000	800,000
Cash and cash equivalents					(6,500,000)					(6,500,000)
Restricted cash					6,500,000					6,500,000
Net cash provided by (used in) financing activities										(200,000)	(2,900,000)
United States
Summary Of Significant Accounting Policies [Line Items]
Operating revenue									1,400,000,000	1,200,000,000	1,100,000,000
Long-lived assets	6,000,000,000				5,400,000,000				6,000,000,000	5,400,000,000	5,600,000,000
Non-US
Summary Of Significant Accounting Policies [Line Items]
Operating revenue									400,000,000	400,000,000	300,000,000
Long-lived assets	2,600,000,000				2,700,000,000				2,600,000,000	2,700,000,000	2,700,000,000
United Kingdom
Summary Of Significant Accounting Policies [Line Items]
Operating revenue									200,000,000	200,000,000	200,000,000
Long-lived assets	$ 1,600,000,000				$ 1,700,000,000				$ 1,600,000,000	$ 1,700,000,000	$ 1,800,000,000
Sales | United Kingdom
Summary Of Significant Accounting Policies [Line Items]
Concentration risk									12.30%	13.30%	13.30%
Long-Lived Assets | United Kingdom
Summary Of Significant Accounting Policies [Line Items]
Concentration risk									18.80%	21.30%	21.10%
Midwest and Northeast Regions
Summary Of Significant Accounting Policies [Line Items]
Number of real estate properties | property					5					5
Impairment of investments in real estate										$ 126,470,000
Buildings and improvements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Building and improvements, useful life									5 years
Buildings and improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Building and improvements, useful life									39 years
Furniture and Fixtures | Minimum
Summary Of Significant Accounting Policies [Line Items]
Building and improvements, useful life									3 years
Furniture and Fixtures | Maximum
Summary Of Significant Accounting Policies [Line Items]
Building and improvements, useful life									5 years
Machinery and equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Building and improvements, useful life									7 years
Machinery and equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Building and improvements, useful life									15 years

Investments In Real Estate (Sum

Investments In Real Estate (Summary of Investment Properties) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Real Estate Properties [Line Items]
Land	$ 689,573	$ 671,602
Acquired Ground Lease	12,639	12,196
Building and Improvements	9,676,427	8,823,814
Tenant Improvements	536,734	475,000
Accumulated Depreciation and Amortization	(2,251,268)	(1,874,054)
Net investments in properties	8,664,105	8,108,558
Direct and accrued costs related to work in progress	700,000	800,000
Internet Gateway Data Centers
Real Estate Properties [Line Items]
Land	109,389	112,265
Acquired Ground Lease	0	0
Building and Improvements	1,441,749	1,459,930
Tenant Improvements	95,185	99,864
Accumulated Depreciation and Amortization	(608,153)	(541,023)
Net investments in properties	1,038,170	1,131,036
Corporate Data Centers
Real Estate Properties [Line Items]
Land	551,372	525,192
Acquired Ground Lease	11,317	12,196
Building and Improvements	8,055,059	7,117,789
Tenant Improvements	433,682	368,837
Accumulated Depreciation and Amortization	(1,586,509)	(1,286,024)
Net investments in properties	7,464,921	6,737,990
Technology Manufacturing
Real Estate Properties [Line Items]
Land	20,199	25,471
Acquired Ground Lease	1,322	0
Building and Improvements	56,254	67,238
Tenant Improvements	6,333	4,764
Accumulated Depreciation and Amortization	(22,677)	(20,506)
Net investments in properties	61,431	76,967
Technology Office
Real Estate Properties [Line Items]
Land	5,368	5,368
Acquired Ground Lease	0	0
Building and Improvements	43,154	42,356
Tenant Improvements	1,459	1,459
Accumulated Depreciation and Amortization	(18,564)	(14,759)
Net investments in properties	31,417	34,424
Other
Real Estate Properties [Line Items]
Land	3,245	3,306
Acquired Ground Lease	0	0
Building and Improvements	80,211	136,501
Tenant Improvements	75	76
Accumulated Depreciation and Amortization	(15,365)	(11,742)
Net investments in properties	$ 68,166	$ 128,141

Investments in Real Estate (Acq

Investments in Real Estate (Acquisition - Telx) (Details)	Oct. 09, 2015USD ($)property	Dec. 31, 2015USD ($)property	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Business Acquisition [Line Items]
Number of real estate properties | property		139
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill | $		$ 330,664,000	$ 0
Gain (loss) on settlement of pre-existing lease contracts | $		14,355,000	0	$ 0
Transaction expenses | $		17,400,000	$ 1,303,000	$ 4,605,000
Telx Acquisition
Business Acquisition [Line Items]
Consideration transferred | $	$ 1,886,000,000
Number of real estate properties | property	20
Acquired entity prior years as customer	8 years
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Investments in real estate | $	$ 604,870
Goodwill | $	316,309
Above/below market lease value, net | $	(13,100)
Capital lease and other long-term obligations | $	(63,962)
Other working capital accounts and adjustments, net | $	47,514
Total purchase price | $	$ 1,886,000
Gain (loss) on settlement of pre-existing lease contracts | $		14,400,000
Write-off of deferred rent receivables | $		75,300,000
Transaction expenses | $		$ 17,400,000
Telx Acquisition | San Francisco, CA
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | New York/New Jersey Metropolitan
Business Acquisition [Line Items]
Number of real estate properties | property	6
Telx Acquisition | Chicago, IL
Business Acquisition [Line Items]
Number of real estate properties | property	2
Telx Acquisition | Dallas, TX
Business Acquisition [Line Items]
Number of real estate properties | property	2
Telx Acquisition | California
Business Acquisition [Line Items]
Number of real estate properties | property	4
Telx Acquisition | Los Angeles, CA
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Santa Clara, CA
Business Acquisition [Line Items]
Number of real estate properties | property	2
Telx Acquisition | Pacific Northwest [Member]
Business Acquisition [Line Items]
Number of real estate properties | property	2
Telx Acquisition | Seattle, WA
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Portland, OR
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Atlanta, GA
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Miami, FL
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Phoenix, AZ
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Charlotte, NC [Member]
Business Acquisition [Line Items]
Number of real estate properties | property	1
Telx Acquisition | Tenant relationship value:
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangibles: | $	$ 734,800
Telx Acquisition | Acquired in place lease value:
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangibles: | $	252,269
Telx Acquisition | Trade name:
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangibles: | $	$ 7,300

Investments in Real Estate (Pro

Investments in Real Estate (Pro Forma) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Business Combinations [Abstract]
Revenue of acquiree since acquisition	$ 81,100,000
Expense of acquiree since acquisition	$ 71,300,000
Business Acquisition, Pro Forma Information [Abstract]
Total revenues		$ 1,978,405	$ 1,873,526
Net income (loss) available to common stockholders		$ 92,812	$ (19,749)
Net income (loss) per share available to common stockholders - basic (in dollars per share)		$ 0.63	$ (0.14)
Net income (loss) per share available to common stockholders - diluted (in dollars per share)		$ 0.63	$ (0.14)

Investments In Real Estate (Sch

Investments In Real Estate (Schedule of Real Estate Property Acquisitions) (Details) - USD ($) $ in Millions	Dec. 18, 2015	Nov. 16, 2015	Jun. 25, 2015	Apr. 15, 2015	Sep. 16, 2014	Dec. 31, 2015
Business Acquisition [Line Items]
Purchase price						$ 95.2
Deer Park 3
Business Acquisition [Line Items]
Purchase price				$ 1.6
Digital Deer Park 3
Business Acquisition [Line Items]
Purchase price			$ 45
Renewal term			28 years
Loudoun 3
Business Acquisition [Line Items]
Purchase price		$ 43
Digital Greenfield
Business Acquisition [Line Items]
Purchase price	$ 5.6
Crawley 2
Business Acquisition [Line Items]
Purchase price					$ 23

Investments in Real Estate (Dis

Investments in Real Estate (Dispositions) (Details) ft² in Thousands, $ in Thousands	Dec. 30, 2015USD ($)	Apr. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Feb. 05, 2015USD ($)	Apr. 07, 2014USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)property	Dec. 31, 2014USD ($)property	Dec. 31, 2013USD ($)	Jan. 21, 2016USD ($)ft²property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property							139
Dispositions
Gross Proceeds							$ 215,300
Gain (Loss) on Sale							94,604	$ 15,945	$ 0
Impairment of investments in real estate							0	126,470	$ 0
Assets							11,451,267	9,526,784
Total liabilities							$ 6,914,765	$ 5,612,546
Midwest and Northeast Regions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property								5
Dispositions
Impairment of investments in real estate								$ 126,470
100 Quannapowitt Parkway
Dispositions
Gross Proceeds				$ 31,100
Gain (Loss) on Sale				$ 10,100
3300 East Birch Street
Dispositions
Gross Proceeds			$ 14,200
Gain (Loss) on Sale			$ 7,500
833 Chestnut Street
Dispositions
Gross Proceeds		$ 160,800
Gain (Loss) on Sale		77,100
Note receivable		$ 9,000
650 Randolph Road
Dispositions
Gross Proceeds	$ 9,200
Gain (Loss) on Sale	$ (100)
6 Braham Street
Dispositions
Gross Proceeds					$ 41,500
Gain (Loss) on Sale					$ 15,900
Disposal Group, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property							8
Dispositions
Assets							$ 180,100
Total liabilities							$ 5,800
Disposal Group, Held-for-sale | Midwest and Northeast Regions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property							3	3
Disposal Group, Held-for-sale | Capital Recycling Strategy
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property							5
Subsequent event | 47700 Kato Road and 1055 Page Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property										2
Square footage of net rentable space | ft²										199
Dispositions
Gross Proceeds										$ 37,500
Subsequent event | Forecast | 47700 Kato Road and 1055 Page Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of business						$ 35,800
Gain (loss) on disposal						$ 1,200

Investment In Unconsolidated 56

Investment In Unconsolidated Joint Ventures (Narrative) (Details)	Oct. 17, 2014USD ($)	Sep. 09, 2014USD ($)extension	Mar. 05, 2014USD ($)	Sep. 27, 2013USD ($)property	Dec. 31, 2015USD ($)property	Dec. 31, 2015USD ($)property	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)property	Sep. 30, 2014property
Schedule of Equity Method Investments [Line Items]
Amortization of difference from cost and book value of investment in joint venture						$ 300,000	$ 500,000	$ 100,000
Gain on contribution of properties to unconsolidated joint ventures						0	95,404,000	$ 115,609,000
Investment in unconsolidated joint ventures					$ 106,107,000	$ 106,107,000	$ 94,729,000
Number of real estate properties | property					139	139
2001 Sixth Avenue
Schedule of Equity Method Investments [Line Items]
% Ownership					50.00%	50.00%	50.00%	50.00%
33 Chun Choi Street (Hong Kong)
Schedule of Equity Method Investments [Line Items]
% Ownership					50.00%	50.00%	50.00%	50.00%
PREI ®
Schedule of Equity Method Investments [Line Items]
Number of properties contributed | property				9
Gross Value				$ 366,400,000
Joint venture, closing costs percentage				20.00%
Joint venture closing costs				$ 2,800,000
% Ownership				20.00%	20.00%	20.00%	20.00%
Investment fund manager, ownership interest in joint venture				80.00%
Gain on contribution of properties to unconsolidated joint ventures								$ 115,600,000
Ownership percentage by parent								80.00%
Gain on sale of investment			$ 164,800,000
Number of real estate properties | property					10	10		9
Net proceeds from joint venture								$ 328,600,000
PREI ® | Notes Payable to Banks
Schedule of Equity Method Investments [Line Items]
Debt face amount				$ 185,000,000
Debt instrument term (in years)				5 years
Loan to value ratio				50.00%
PREI ® | Notes Payable to Banks | London Interbank Offered Rate (LIBOR)
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate				1.80%
Crawley 2
Schedule of Equity Method Investments [Line Items]
Gross Value			$ 40,400,000
Ownership percentage by parent			80.00%
Equity method investment noncurrent liabilities			$ 26,100,000
Investment in unconsolidated joint ventures			14,300,000
Proceeds from sale of equity investment			11,400,000
Line of credit			23,000,000
Gain on sale of investment			1,900,000
Net proceeds from joint venture			$ 17,500,000
GCEAR
Schedule of Equity Method Investments [Line Items]
Gross Value		$ 185,500,000
% Ownership		20.00%			20.00%	20.00%	20.00%
Ownership percentage by parent		80.00%					80.00%
Number of real estate properties | property									1
Transaction costs		$ 2,100,000
GCEAR | Secured Debt
Schedule of Equity Method Investments [Line Items]
Debt face amount		$ 102,000,000
Debt instrument term (in years)		5 years
Basis spread on variable rate		2.25%
Proceeds from sale of equity investment		$ 167,500,000
Gain on sale of investment							$ 93,500,000
Loan to value ratio		55.00%
Number of extension options | extension		2
Debt extension		1 year
GCEAR | Secured Debt | London Interbank Offered Rate (LIBOR)
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate		2.25%
Southwestern United States and Mexico Properties
Schedule of Equity Method Investments [Line Items]
Gain on sale of investment					$ 14,600,000
Net proceeds from joint venture	$ 31,700,000
Southwestern United States and Mexico Properties | Other Assets
Schedule of Equity Method Investments [Line Items]
Gross Value	$ 17,100,000
Interest Rate Swap | GCEAR | Secured Debt
Schedule of Equity Method Investments [Line Items]
Debt face amount		$ 51,000,000

Investment In Unconsolidated 57

Investment In Unconsolidated Joint Ventures (Summary of Financial Information for Joint Ventures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 09, 2014	Sep. 27, 2013
Schedule of Equity Method Investments [Line Items]
Net Investment in Properties	$ 758,582	$ 779,752	$ 584,837
Total Assets	935,990	942,107	676,015
Mortgage Loans	460,023	461,548	337,953
Total Liabilities	558,310	569,895	444,062
Equity / (Deficit)	377,679	372,212	231,953
Investment in and share of equity	106,107	94,729	70,504
Revenues	129,649	102,303	54,770
Property Operating Expense	(36,146)	(26,873)	(17,027)
Net Operating Income	93,503	75,430	37,743
Net Income (Loss)	37,350	30,577	20,651
Investment in and share of net income (loss)	$ 15,491	$ 13,289	$ 9,796
2001 Sixth Avenue
Schedule of Equity Method Investments [Line Items]
% Ownership	50.00%	50.00%	50.00%
Net Investment in Properties	$ 33,757	$ 37,620	$ 33,980
Total Assets	44,732	42,537	39,674
Mortgage Loans	102,998	104,523	105,953
Total Liabilities	107,807	110,749	111,943
Equity / (Deficit)	(63,075)	(68,212)	(72,269)
Revenues	43,734	39,807	37,625
Property Operating Expense	(15,205)	(14,707)	(11,981)
Net Operating Income	28,529	25,100	25,644
Net Income (Loss)	$ 14,171	$ 11,982	$ 12,346
700/750 Central Expressway
Schedule of Equity Method Investments [Line Items]
% Ownership			50.00%
Net Investment in Properties			$ 0
Total Assets			0
Mortgage Loans			0
Total Liabilities			0
Equity / (Deficit)			0
Revenues			55
Property Operating Expense			(1)
Net Operating Income			54
Net Income (Loss)			$ 58
2020 Fifth Avenue
Schedule of Equity Method Investments [Line Items]
% Ownership	50.00%	50.00%	50.00%
Net Investment in Properties	$ 46,633	$ 47,239	$ 47,901
Total Assets	55,257	55,123	53,389
Mortgage Loans	47,000	47,000	47,000
Total Liabilities	47,857	47,795	47,525
Equity / (Deficit)	7,400	7,328	5,864
Revenues	8,474	8,308	7,513
Property Operating Expense	(1,177)	(1,086)	(522)
Net Operating Income	7,297	7,222	6,991
Net Income (Loss)	$ 4,840	$ 4,844	$ 5,756
33 Chun Choi Street (Hong Kong)
Schedule of Equity Method Investments [Line Items]
% Ownership	50.00%	50.00%	50.00%
Net Investment in Properties	$ 138,742	$ 143,014	$ 102,428
Total Assets	179,525	165,912	122,890
Mortgage Loans	0	0	0
Total Liabilities	4,173	10,210	8,382
Equity / (Deficit)	175,352	155,702	114,508
Revenues	17,700	8,671	0
Property Operating Expense	(5,358)	(2,625)	(44)
Net Operating Income	12,342	6,046	(44)
Net Income (Loss)	$ 4,480	$ 2,976	$ (150)
PREI ®
Schedule of Equity Method Investments [Line Items]
% Ownership	20.00%	20.00%			20.00%
Net Investment in Properties	$ 419,498	$ 429,358
Total Assets	481,175	492,494
Mortgage Loans	208,000	208,000
Total Liabilities	293,276	296,480
Equity / (Deficit)	187,898	196,014
Revenues	40,011	39,467
Property Operating Expense	(6,157)	(6,144)
Net Operating Income	33,854	33,323
Net Income (Loss)	$ 15,121	$ 12,378
GCEAR
Schedule of Equity Method Investments [Line Items]
% Ownership	20.00%	20.00%		20.00%
Net Investment in Properties	$ 119,952	$ 122,521
Total Assets	175,301	186,041
Mortgage Loans	102,025	102,025
Total Liabilities	105,197	104,661
Equity / (Deficit)	70,104	81,380
Revenues	19,730	6,050
Property Operating Expense	(8,249)	(2,311)
Net Operating Income	11,481	3,739
Net Income (Loss)	$ (1,262)	$ (1,603)

Acquired Intangible Assets an58

Acquired Intangible Assets and Liabilities (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of below market leases	$ 9,300,000	$ 10,000,000	$ 11,700,000
Amortization of intangible assets	$ 105,833,000	82,310,000	77,872,000
Expected average remaining lives of acquired below market leases	2308 days
Acquired above market leases:
Finite-Lived Intangible Assets [Line Items]
Expected average remaining lives	3 years 8 months
Acquired in place lease value:
Finite-Lived Intangible Assets [Line Items]
Expected average remaining lives	5 years 11 months
Amortization of intangible assets	$ 46,200,000	62,200,000	62,700,000
Weighted average remaining contractual life for acquired leases excluding renewals or extensions	1789 days
Tenant relationship value:
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 14,500,000	0	0
Remaining amortization period	4144 days
Trade name:
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 400,000	$ 0	$ 0
Remaining amortization period	1376 days

Acquired Intangible Assets an59

Acquired Intangible Assets and Liabilities (Summary of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Below Market Lease [Abstract]
Gross amount	$ 294,791	$ 282,670
Accumulated amortization	(193,677)	(178,435)
Net	101,114	104,235
Acquired in place lease value:
Finite-Lived Intangible Assets [Line Items]
Gross amount	901,381	680,419
Accumulated amortization	(472,933)	(452,739)
Net	428,448	227,680
Tenant relationship value:
Finite-Lived Intangible Assets [Line Items]
Gross amount	734,800	0
Accumulated amortization	(14,495)	0
Net	720,305	0
Trade name:
Finite-Lived Intangible Assets [Line Items]
Gross amount	7,300	0
Accumulated amortization	(417)	0
Net	6,883	0
Acquired above market leases:
Finite-Lived Intangible Assets [Line Items]
Gross amount	122,311	126,677
Accumulated amortization	(89,613)	(88,072)
Net	$ 32,698	$ 38,605

Acquired Intangible Assets an60

Acquired Intangible Assets and Liabilities (Schedule of Estimated Annual Amortization Of Below Market Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Net	$ 101,114	$ 104,235
Below Market Leases, Net of Above Market Leases
Finite-Lived Intangible Assets [Line Items]
2,016	8,403
2,017	6,867
2,018	5,222
2,019	5,285
2,020	7,351
Thereafter	35,288
Net	$ 68,416

Acquired Intangible Assets an61

Acquired Intangible Assets and Liabilities (Schedule of Future Amortization Finite Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Acquired in place lease value:
Finite-Lived Intangible Assets [Line Items]
2,016	$ 53,391
2,017	48,879
2,018	46,636
2,019	44,150
2,020	40,108
Thereafter	195,284
Net	428,448	$ 227,680
Customer contracts and trade names
Finite-Lived Intangible Assets [Line Items]
2,016	65,261
2,017	65,261
2,018	65,261
2,019	64,844
2,020	63,436
Thereafter	403,125
Net	$ 727,188

Debt of The Company (Details)

Debt of The Company (Details)	Dec. 31, 2015
3.950% Notes Due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)	3.95%
3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)	3.625%
3.400% Notes Due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)	3.40%
4.750% Notes Due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)	4.75%
Exchangeable senior debentures | 4.750% Notes Due 2023
Debt Instrument [Line Items]
Interest rate (as a percent)	4.75%
Senior Notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)	5.875%
Senior Notes | 5.25% notes due 2021
Debt Instrument [Line Items]
Interest rate (as a percent)	5.25%
Senior Notes | 3.950% Notes Due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)	3.95%
Senior Notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)	3.625%
Senior Notes | 4.25% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)	4.25%
Senior Notes | 3.400% Notes Due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)	3.40%
Senior Notes | 4.750% Notes Due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)	4.75%

Debt of the Operating Partner63

Debt of the Operating Partnership (Debt Schedule) (Details) $ in Thousands	Aug. 15, 2013extension	Dec. 31, 2015USD ($)extension	Dec. 31, 2015	Dec. 31, 2015$ / ¥	Dec. 31, 2015$ / £	Dec. 31, 2015$ / CAD	Dec. 31, 2015$ / SGD	Dec. 31, 2015$ / €	Dec. 31, 2015$ / AUD	Dec. 31, 2015$ / HKD	Dec. 31, 2014USD ($)	Dec. 31, 2014	Dec. 31, 2014$ / ¥	Dec. 31, 2014$ / £	Dec. 31, 2014$ / CAD	Dec. 31, 2014$ / SGD	Dec. 31, 2014$ / €	Dec. 31, 2014$ / AUD	Dec. 31, 2014$ / HKD	Apr. 01, 2014$ / £	Jan. 18, 2013USD ($)	Sep. 24, 2012USD ($)	Mar. 08, 2011USD ($)	Feb. 03, 2010	Jan. 28, 2010USD ($)	Jan. 20, 2010
Debt Instrument [Line Items]
Unsecured senior notes, net of discount		$ 3,738,606									$ 2,791,758
Mortgage loans, including premiums		303,183									378,818
Singapore dollar (SGD)
Debt Instrument [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / SGD							0.70									0.75
3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)			3.625%
Global revolving credit facility
Debt Instrument [Line Items]
Principal outstanding		967,884									525,951
Unsecured term loan
Debt Instrument [Line Items]
Principal outstanding		924,568									976,600
Senior Notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)			5.875%
Senior Notes | 5.25% notes due 2021
Debt Instrument [Line Items]
Interest rate (as a percent)			5.25%
Senior Notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)			3.625%
Senior Notes | 4.25% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)			4.25%
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Principal outstanding, gross		5,951,716
Unamortized discounts		(17,914)
Unsecured senior notes, net of discount		3,738,606									2,791,758
Mortgage loans, including premiums		303,183									378,818
Unamortized premium		439
Long-term debt		5,934,241									4,673,127
Digital Realty Trust, L.P. | 5.875% notes due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)																									5.875%
Unamortized discounts																									$ (8,500)
Digital Realty Trust, L.P. | 5.25% notes due 2021
Debt Instrument [Line Items]
Interest rate (as a percent)																							5.25%
Unamortized discounts																							$ (900)
Digital Realty Trust, L.P. | 3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)																						3.625%
Unamortized discounts																						$ (3,900)
Digital Realty Trust, L.P. | 4.75% notes due 2023
Debt Instrument [Line Items]
Interest rate (as a percent)																				4.75%
Unamortized discounts		(3,000)
Digital Realty Trust, L.P. | 4.75% notes due 2023 | British pound sterling (£)
Debt Instrument [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / £																				1.66
Digital Realty Trust, L.P. | 4.25% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)																					4.25%
Unamortized discounts																					$ (4,800)
Digital Realty Trust, L.P. | Global revolving credit facility
Debt Instrument [Line Items]
Principal outstanding		967,884									525,951
Principal outstanding, gross		967,884
Unamortized discounts		0
Unamortized premium		0
Long-term debt		$ 967,884
Basis spread on variable rate		1.10%
Commitment fee percentage		0.20%
Number of extension options | extension	2	2
Revolving credit facility commitments extension (in months)	6 months	6 months
Weighted-average interest rate (as a percent)			1.53%									1.87%
Derivative forward exchange rate (in dollars per share)				0.01	1.47	0.72	0.70	1.09	0.73	0.13			0.01	1.56	0.86	0.75	1.21	0.82	0.13
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		$ 967,884									514,951
Basis spread on variable rate		1.10%
Weighted-average interest rate (as a percent)			1.53%									1.84%
Digital Realty Trust, L.P. | Global revolving credit facility | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.10%
Weighted-average interest rate (as a percent)			3.35%
Digital Realty Trust, L.P. | Global revolving credit facility | U.S. dollar ($) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		$ 274,000									90,000
Weighted-average interest rate (as a percent)			1.46%									1.27%
Digital Realty Trust, L.P. | Global revolving credit facility | U.S. dollar ($) | Base Rate
Debt Instrument [Line Items]
Principal outstanding		0									11,000
Weighted-average interest rate (as a percent)			0.00%									3.35%
Digital Realty Trust, L.P. | Global revolving credit facility | British pound sterling (£) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		95,784									132,716
Weighted-average interest rate (as a percent)			1.61%									1.61%
Digital Realty Trust, L.P. | Global revolving credit facility | Euro (€) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		280,565									58,071
Weighted-average interest rate (as a percent)			0.90%									1.13%
Digital Realty Trust, L.P. | Global revolving credit facility | Australian dollar (AUD) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		96,831									72,676
Weighted-average interest rate (as a percent)			3.16%									3.74%
Digital Realty Trust, L.P. | Global revolving credit facility | Hong Kong dollar (HKD) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		86,082									79,336
Weighted-average interest rate (as a percent)			1.33%									1.34%
Digital Realty Trust, L.P. | Global revolving credit facility | Japanese yen (JPY) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		14,304									13,201
Weighted-average interest rate (as a percent)			1.15%									1.17%
Digital Realty Trust, L.P. | Global revolving credit facility | Singapore dollar (SGD) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		49,132									6,565
Weighted-average interest rate (as a percent)			1.92%									1.64%
Digital Realty Trust, L.P. | Global revolving credit facility | Canadian dollar (CAD) | Floating Rate
Debt Instrument [Line Items]
Principal outstanding		71,186									62,386
Weighted-average interest rate (as a percent)			1.95%									2.39%
Digital Realty Trust, L.P. | Unsecured term loan
Debt Instrument [Line Items]
Principal outstanding		924,568									976,600
Principal outstanding, gross		924,568
Unamortized discounts		0
Unamortized premium		0
Long-term debt		$ 924,568
Basis spread on variable rate		1.20%
Number of extension options | extension		2
Revolving credit facility commitments extension (in months)		6 months
Weighted-average interest rate (as a percent)			1.76%									1.66%
Derivative forward exchange rate (in dollars per share)					1.47		0.70	1.09	0.73					1.56		0.75	1.21	0.82
Digital Realty Trust, L.P. | Unsecured term loan | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			1.94%									2.00%
Digital Realty Trust, L.P. | Unsecured term loan | U.S. dollar ($)
Debt Instrument [Line Items]
Principal outstanding		$ 410,905									410,905
Weighted-average interest rate (as a percent)			1.51%									1.36%
Digital Realty Trust, L.P. | Unsecured term loan | U.S. dollar ($) | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			1.90%									1.92%
Digital Realty Trust, L.P. | Unsecured term loan | British pound sterling (£)
Debt Instrument [Line Items]
Principal outstanding		178,195									188,365
Weighted-average interest rate (as a percent)			1.78%									1.76%
Digital Realty Trust, L.P. | Unsecured term loan | Euro (€)
Debt Instrument [Line Items]
Principal outstanding		99,061									120,375
Weighted-average interest rate (as a percent)			1.00%									1.22%
Digital Realty Trust, L.P. | Unsecured term loan | Australian dollar (AUD)
Debt Instrument [Line Items]
Principal outstanding		75,337									84,529
Weighted-average interest rate (as a percent)			3.27%									3.98%
Digital Realty Trust, L.P. | Unsecured term loan | Singapore dollar (SGD)
Debt Instrument [Line Items]
Principal outstanding		161,070									172,426
Weighted-average interest rate (as a percent)			2.16%									1.45%
Digital Realty Trust, L.P. | Unsecured term loan | Singapore dollar (SGD) | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate (as a percent)			2.19%									2.01%
Digital Realty Trust, L.P. | Prudential Shelf Facility
Debt Instrument [Line Items]
Principal outstanding, gross		75,000									142,000
Unamortized discounts		0
Unamortized premium		0
Long-term debt		75,000
Digital Realty Trust, L.P. | Prudential Shelf Facility | Series C
Debt Instrument [Line Items]
Interest rate (as a percent)			9.68%
Principal outstanding, gross		25,000									25,000
Digital Realty Trust, L.P. | Prudential Shelf Facility | Series D
Debt Instrument [Line Items]
Interest rate (as a percent)			4.57%
Principal outstanding, gross		0									50,000
Digital Realty Trust, L.P. | Prudential Shelf Facility | Series E
Debt Instrument [Line Items]
Interest rate (as a percent)			5.73%
Principal outstanding, gross		50,000									50,000
Digital Realty Trust, L.P. | Prudential Shelf Facility | Series F
Debt Instrument [Line Items]
Interest rate (as a percent)			4.50%
Principal outstanding, gross		0									17,000
Digital Realty Trust, L.P. | Senior Notes
Debt Instrument [Line Items]
Principal outstanding, gross		3,681,520
Unamortized discounts		(17,914)									(15,632)
Unsecured senior notes, net of discount		3,663,606									2,649,758
Unamortized premium		0
Long-term debt		3,663,606
Digital Realty Trust, L.P. | Senior Notes | 4.50% notes due 2015
Debt Instrument [Line Items]
Interest rate (as a percent)			4.50%
Principal outstanding, gross		0									375,000
Digital Realty Trust, L.P. | Senior Notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)			5.875%
Principal outstanding, gross		500,000									500,000
Digital Realty Trust, L.P. | Senior Notes | 3.40% notes due 2020
Debt Instrument [Line Items]
Interest rate (as a percent)			3.40%
Principal outstanding, gross		500,000									0
Digital Realty Trust, L.P. | Senior Notes | 5.25% notes due 2021
Debt Instrument [Line Items]
Interest rate (as a percent)			5.25%
Principal outstanding, gross		400,000									400,000
Digital Realty Trust, L.P. | Senior Notes | 3.95% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)			3.95%
Principal outstanding, gross		500,000									0
Digital Realty Trust, L.P. | Senior Notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)			3.625%
Principal outstanding, gross		300,000									300,000
Digital Realty Trust, L.P. | Senior Notes | 4.75% notes due 2023
Debt Instrument [Line Items]
Interest rate (as a percent)			4.75%
Principal outstanding, gross		442,080									467,310
Digital Realty Trust, L.P. | Senior Notes | 4.25% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)			4.25%
Principal outstanding, gross		589,440									623,080
Digital Realty Trust, L.P. | Senior Notes | 4.75% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)			4.75%
Principal outstanding, gross		450,000									0
Digital Realty Trust, L.P. | Mortgage loans
Debt Instrument [Line Items]
Principal outstanding, gross		302,744
Unamortized discounts		0
Unamortized premium		439									582
Long-term debt		303,183									378,818
Digital Realty Trust, L.P. | Mortgage loans | 200 Paul Avenue
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			5.74%
Mortgage loans, including premiums		0									68,665
Digital Realty Trust, L.P. | Mortgage loans | 2045 & 2055 LaFayette Street
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			5.93%
Mortgage loans, including premiums		61,437									62,563
Digital Realty Trust, L.P. | Mortgage loans | 34551 Ardenwood Boulevard 1-4
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			5.95%
Mortgage loans, including premiums		50,477									51,339
Digital Realty Trust, L.P. | Mortgage loans | 1100 Space Park Drive
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			5.89%
Mortgage loans, including premiums		50,423									51,295
Digital Realty Trust, L.P. | Mortgage loans | 600 West Seventh Street
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			5.80%
Mortgage loans, including premiums		46,000									47,825
Digital Realty Trust, L.P. | Mortgage loans | 150 South First Street
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			6.30%
Mortgage loans, including premiums		48,484									49,316
Digital Realty Trust, L.P. | Mortgage loans | 2334 Lundy Place
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			5.96%
Mortgage loans, including premiums		36,714									37,340
Digital Realty Trust, L.P. | Mortgage loans | 8025 North Interstate 35
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			4.09%
Mortgage loans, including premiums		5,789									6,057
Digital Realty Trust, L.P. | Mortgage loans | 731 East Trade Street
Debt Instrument [Line Items]
Interest rate at period end (as a percent)			8.22%
Mortgage loans, including premiums		3,420									3,836
Digital Realty Trust, L.P. | Mortgage loans | Manchester Technopark
Debt Instrument [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / £					1.47									1.56
Digital Realty Trust, L.P. | Unsecured Senior Notes
Debt Instrument [Line Items]
Principal outstanding, gross		$ 75,000									$ 142,000
Basis spread on variable rate		1.20%
Digital Realty Trust, L.P. | Unsecured Senior Notes | Series D
Debt Instrument [Line Items]
Interest rate (as a percent)																										4.57%
Digital Realty Trust, L.P. | Unsecured Senior Notes | Series E
Debt Instrument [Line Items]
Interest rate (as a percent)																										5.73%
Digital Realty Trust, L.P. | Unsecured Senior Notes | Series F
Debt Instrument [Line Items]
Interest rate (as a percent)																								4.50%

Debt of the Operating Partner64

Debt of the Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) - Global revolving credit facility	Jan. 15, 2016USD ($)extension	Aug. 15, 2013USD ($)extension	Dec. 31, 2015USD ($)extension	Dec. 31, 2014USD ($)	Aug. 14, 2013USD ($)
Debt Instrument [Line Items]
Line of credit			$ 967,884,000	$ 525,951,000
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 2,000,000,000			$ 1,800,000,000
Number of extension options | extension		2	2
Revolving credit facility commitments extension (in months)		6 months	6 months
Basis spread on variable rate			1.10%
Commitment fee percentage			0.20%
Weighted-average interest rate (as a percent)			1.53%	1.87%
Financing costs capitalized amount			$ 18,000,000
Line of credit			967,884,000	$ 525,951,000
Letters of credit			8,700,000
Remaining borrowing capacity			$ 900,000,000
Digital Realty Trust, L.P. | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,000,000,000
Number of extension options | extension	2
Revolving credit facility commitments extension (in months)	6 months
Digital Realty Trust, L.P. | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate			0.10%
Weighted-average interest rate (as a percent)			3.35%
Digital Realty Trust, L.P. | Floating Rate
Debt Instrument [Line Items]
Basis spread on variable rate			1.10%
Weighted-average interest rate (as a percent)			1.53%	1.84%
Line of credit			$ 967,884,000	$ 514,951,000
Digital Realty Trust, L.P. | Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate			0.10%
Digital Realty Trust, L.P. | Accordian Feature
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 2,550,000,000
Digital Realty Trust, L.P. | Accordian Feature | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,500,000,000

Debt of the Operating Partner65

Debt of the Operating Partnership (Unsecured Term Loan) (Narrative) (Details)	Jan. 15, 2016USD ($)	Dec. 31, 2015USD ($)extension	Jan. 25, 2016USD ($)	Dec. 31, 2014USD ($)	Aug. 15, 2013USD ($)	Aug. 14, 2013USD ($)	Apr. 16, 2012USD ($)
Unsecured term loan
Debt Instrument [Line Items]
Principal outstanding		$ 924,568,000		$ 976,600,000
Unsecured term loan | Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 976,600,000			$ 1,000,000,000	$ 750,000,000	$ 1,000,000,000
Number of extension options | extension		2
Revolving credit facility commitments extension (in months)		6 months
Basis spread on variable rate		1.20%
Principal outstanding		$ 924,568,000		$ 976,600,000
Capitalized financing costs		$ 8,400,000
Unsecured term loan | Digital Realty Trust, L.P. | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,500,000,000
Maximum borrowing capacity, subject to reciept of lender commitments and other conditions	$ 1,800,000,000
Unsecured term loan | Digital Realty Trust, L.P. | Accordian Feature
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 1,100,000,000
Unsecured term loan, 5 year | Subsequent event
Debt Instrument [Line Items]
Debt instrument term (in years)	5 years
Unsecured term loan, 5 year | Digital Realty Trust, L.P. | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,250,000,000
Unsecured term loan, 7 year | Digital Realty Trust, L.P. | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 300,000,000
Debt instrument term (in years)	7 years

Debt of the Operating Partner66

Debt of the Operating Partnership (Unsecured Senior Notes) (Narrative) (Details)

Jan. 20, 2010USD ($)series

Dec. 31, 2015USD ($)

Dec. 31, 2014USD ($)

Nov. 05, 2013USD ($)

Aug. 15, 2013USD ($)

Jul. 25, 2011USD ($)

Jul. 24, 2011USD ($)

Dec. 08, 2010USD ($)

Dec. 07, 2010USD ($)

Feb. 03, 2010USD ($)

Jan. 31, 2009USD ($)

Nov. 30, 2008USD ($)

Jul. 31, 2008USD ($)

Debt of the Operating Partnership [Line Items]

Number of series notes were issued in | series

2

Digital Realty Trust, L.P.

Debt of the Operating Partnership [Line Items]

Balance outstanding

$ 5,951,716,000

Digital Realty Trust, L.P. | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 50,000,000

Balance outstanding

$ 75,000,000

$ 142,000,000

Digital Realty Trust, L.P. | Prudential Shelf Facility | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 100,000,000

$ 250,000,000

$ 200,000,000

Unissued amount

$ 50,000,000

Digital Realty Trust, L.P. | Series D | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 50,000,000

Interest rate (as a percent)

4.57%

Debt instrument term (in years)

5 years

Digital Realty Trust, L.P. | Series E | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 50,000,000

Interest rate (as a percent)

5.73%

Debt instrument term (in years)

7 years

Digital Realty Trust, L.P. | Series F | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 17,000,000

Interest rate (as a percent)

4.50%

Debt instrument term (in years)

5 years

Digital Realty Trust, L.P. | Series A | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 25,000,000

Interest rate (as a percent)

7.00%

Repaid amount

$ 25,000,000

Digital Realty Trust, L.P. | Series B | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 33,000,000

Interest rate (as a percent)

9.32%

Repaid amount

$ 33,000,000

Digital Realty Trust, L.P. | Series C | Unsecured Senior Notes

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 25,000,000

Debt of the Operating Partner67

Debt of the Operating Partnership (5.875% Notes Due 2020) (Narrative) (Details)	Jan. 28, 2010USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690,000
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		17,914,000
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690,000
Digital Realty Trust, L.P. | 5.875% notes due 2020
Debt Instrument [Line Items]
Debt face amount	$ 500,000,000
Interest rate (as a percent)	5.875%
Purchase price paid, percentage of face amount	98.296%
Unamortized discount	$ 8,500,000
Debt issuance cost	4,400,000
Borrowings of unsecured senior notes	$ 487,100,000
Leverage ratio percentage		60.00%
Secured debt ratio percentage		40.00%
Interest coverage ratio		1.50
Unencumbered assets to unsecured debt (as a percent)		150.00%

Debt of the Operating Partner68

Debt of the Operating Partnership (5.250% Notes Due 2021) (Narrative) (Details)	Mar. 08, 2011USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690,000
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		17,914,000
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690,000
5.25% notes due 2021 | Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Debt face amount	$ 400,000,000
Interest rate (as a percent)	5.25%
Purchase price paid, percentage of face amount	99.775%
Unamortized discount	$ 900,000
Debt issuance cost	3,600,000
Borrowings of unsecured senior notes	$ 395,500,000
Leverage ratio percentage		60.00%
Secured debt ratio percentage		40.00%
Interest coverage ratio		1.50
Unencumbered assets to unsecured debt (as a percent)		150.00%

Debt of the Operating Partner69

Debt of the Operating Partnership (3.625% Notes Due 2022) (Narrative) (Details)	Sep. 24, 2012USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690,000
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		17,914,000
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690,000
3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate (as a percent)		3.625%
3.625% notes due 2022 | Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Debt face amount	$ 300,000,000
Interest rate (as a percent)	3.625%
Purchase price paid, percentage of face amount	98.684%
Unamortized discount	$ 3,900,000
Debt issuance cost	3,000,000
Borrowings of unsecured senior notes	$ 293,100,000
Leverage ratio percentage		60.00%
Secured debt ratio percentage		40.00%
Interest coverage ratio		1.50
Unencumbered assets to unsecured debt (as a percent)		150.00%

Debt of the Operating Partner70

Debt of the Operating Partnership (4.750% Notes Due 2023) (Narrative) (Details) - Digital Realty Trust, L.P. $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)	Apr. 01, 2014USD ($)$ / £	Apr. 01, 2014GBP (£)$ / £
Debt Instrument [Line Items]
Unamortized discount	$ 17,914
4.75% notes due 2023
Debt Instrument [Line Items]
Debt face amount		$ 498,900	£ 300,000,000
Interest rate (as a percent)		4.75%	4.75%
Unamortized discount	3,000
Debt issuance cost	5,000
Preceeds form debt, net of issuance costs	$ 490,900
Secured debt ratio percentage	40.00%
Unencumbered assets to unsecured debt (as a percent)	150.00%
British pound sterling (£) | 4.75% notes due 2023
Debt Instrument [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / £		1.66	1.66
Maximum | Secured Debt | 4.75% notes due 2023
Debt Instrument [Line Items]
Leverage ratio (as a percent)	60.00%
Minimum | 4.75% notes due 2023
Debt Instrument [Line Items]
Interest coverage ratio	1.50

Debt of the Operating Partner71

Debt of the Operating Partnership (4.25% Notes Due 2025) (Narrative) (Details) $ in Thousands	Jan. 18, 2013USD ($)$ / £	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Jan. 18, 2013GBP (£)$ / £
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 0	$ 0	$ 264,690
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		17,914
Borrowings of unsecured senior notes		$ 0	0	$ 264,690
Digital Realty Trust, L.P. | 4.25% notes due 2025
Debt Instrument [Line Items]
Debt face amount	$ 634,800				£ 400,000,000
Exchange rate (in usd per gbp) | $ / £	1.59				1.59
Interest rate (as a percent)	4.25%				4.25%
Unamortized discount	$ 4,800
Debt issuance cost	5,800
Borrowings of unsecured senior notes	$ 624,200
Leverage ratio percentage		60.00%
Secured debt ratio percentage		40.00%
Interest coverage ratio		1.50
Unencumbered assets to unsecured debt (as a percent)		150.00%
Senior Notes | 4.25% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)		4.25%
Senior Notes | Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		$ 17,914	$ 15,632
Senior Notes | Digital Realty Trust, L.P. | 4.25% notes due 2025
Debt Instrument [Line Items]
Interest rate (as a percent)		4.25%

Debt of the Operating Partner72

Debt of the Operating Partnership (3.950% Notes Due 2022) (Narrative) (Details) - Senior Notes - 3.950% Notes Due 2022 $ in Millions	Jun. 23, 2015USD ($)
Debt Instrument [Line Items]
Debt face amount	$ 500
Interest rate (as a percent)	3.95%
Issuance as a percentage of par	99.236%
Unamortized discount	$ 3.8
Debt issuance cost	4.4
Preceeds form debt, net of issuance costs	$ 491.8
Covenant, leverage ratio allowable maximum (as a percent)	60.00%
Covenant, secured leverage ration allowable maximum (as a percent)	40.00%
Convenant, interest coverage ratio required minimum	1.50
Covenant, unencumbered assets relative to aggregate principal amount of unsecured debt required minimum (as a percent)	150.00%

Debt of the Operating Partner73

Debt of the Operating Partnership (3.400% Notes Due 2020 and 4.750% Notes Due 2025) (Narrative) (Details) - USD ($) $ in Millions	Oct. 01, 2015	Dec. 31, 2015	Oct. 05, 2015
Debt Instrument [Line Items]
Number of business days following consummation of acquisition by wholly owned subsidiary to merge with parent company	5 days
Senior Notes | 3.400% Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt face amount	$ 500
Interest rate (as a percent)	3.40%		3.40%
Issuance as a percentage of par	99.777%
Redemption price percentage		100.00%
Senior Notes | 4.750% Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt face amount	$ 450
Interest rate (as a percent)	4.75%		4.75%
Issuance as a percentage of par	100.00%
Redemption price percentage		100.00%

Debt of the Operating Partner74

Debt of the Operating Partnership (Schedule of Debt Maturities and Principal Maturities) (Details) - Digital Realty Trust, L.P. $ in Thousands	Jan. 15, 2016extension	Jan. 06, 2016USD ($)	Aug. 15, 2013extension	Feb. 29, 2016USD ($)loan	Dec. 31, 2015USD ($)extension	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
2,016					$ 216,979
2,017					2,050,847
2,018					593
2,019					644
2,020					1,001,133
Thereafter					2,681,520
Subtotal					5,951,716
Unamortized discount					(17,914)
Unamortized premium					439
Total					5,934,241	$ 4,673,127
Global revolving credit facility
Debt Instrument [Line Items]
2,016					0
2,017					967,884
2,018					0
2,019					0
2,020					0
Thereafter					0
Subtotal					967,884
Unamortized discount					0
Unamortized premium					0
Total					$ 967,884
Number of extension options | extension			2		2
Revolving credit facility commitments extension (in months)			6 months		6 months
Unsecured term loan
Debt Instrument [Line Items]
2,016					$ 0
2,017					924,568
2,018					0
2,019					0
2,020					0
Thereafter					0
Subtotal					924,568
Unamortized discount					0
Unamortized premium					0
Total					$ 924,568
Number of extension options | extension					2
Revolving credit facility commitments extension (in months)					6 months
Prudential Shelf Facility
Debt Instrument [Line Items]
2,016					$ 25,000
2,017					50,000
2,018					0
2,019					0
2,020					0
Thereafter					0
Subtotal					75,000	142,000
Unamortized discount					0
Unamortized premium					0
Total					75,000
Senior Notes
Debt Instrument [Line Items]
2,016					0
2,017					0
2,018					0
2,019					0
2,020					1,000,000
Thereafter					2,681,520
Subtotal					3,681,520
Unamortized discount					(17,914)	(15,632)
Unamortized premium					0
Total					3,663,606
Mortgage loans
Debt Instrument [Line Items]
2,016					191,979
2,017					108,395
2,018					593
2,019					644
2,020					1,133
Thereafter					0
Subtotal					302,744
Unamortized discount					0
Unamortized premium					439	582
Total					303,183	378,818
Subsequent event
Debt Instrument [Line Items]
Number of mortgage loans on real estate repaid in full | loan				2
Subsequent event | Global revolving credit facility
Debt Instrument [Line Items]
Number of extension options | extension	2
Revolving credit facility commitments extension (in months)	6 months
Series D | Prudential Shelf Facility
Debt Instrument [Line Items]
Subtotal					$ 0	50,000
Interest rate (as a percent)					4.57%
Series D | Subsequent event | Prudential Shelf Facility
Debt Instrument [Line Items]
Extinguishment of debt, amount		$ 25,000
Interest rate (as a percent)		9.68%
Series F | Prudential Shelf Facility
Debt Instrument [Line Items]
Subtotal					$ 0	$ 17,000
Interest rate (as a percent)					4.50%
Mortgage loans | Subsequent event
Debt Instrument [Line Items]
Extinguishment of debt, amount				$ 51,500

Income Per Share (Summary of Ba

Income Per Share (Summary of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income available to common unitholders	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ (52,268)	$ 109,314	$ 41,510	$ 34,186	$ 217,266	$ 132,718	$ 271,583
Weighted average units outstanding—basic (in shares)									138,247,606	133,369,047	127,941,134
Stock options (in shares)									20,424	30,434	61,375
Unvested incentive units (in shares)									95,746	90,449	125,132
Market performance-based awards (in shares)									501,645	147,305	0
Weighted average units outstanding—diluted (in shares)									138,865,421	133,637,235	128,127,641
Basic (in dollars per share)	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.81	$ 0.31	$ 0.27	$ 1.57	$ 1	$ 2.12
Diluted (in dollars per share)	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.80	$ 0.31	$ 0.26	$ 1.56	$ 0.99	$ 2.12

Income Per Share (Schedule of A

Income Per Share (Schedule of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	20,118,783	21,429,247	22,000,089
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,658,291	2,753,614	2,521,400
Potentially dilutive 2029 Debentures
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	1,957,963	6,649,510
Potentially dilutive Series D Cumulative Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	0	470,748
Potentially dilutive Series E Cumulative Redeemable Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	4,301,438	4,956,175	5,176,886
Potentially dilutive Series F Cumulative Redeemable Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,727,962	3,143,195	3,283,169
Potentially dilutive Series G Cumulative Redeemable Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	3,730,042	4,297,805	3,898,376
Potentially dilutive Series H Cumulative Redeemable Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	5,465,987	4,320,495	0
Potentially dilutive Series I Cumulative Redeemable Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,235,063	0	0

Income Per Unit (Summary of Bas

Income Per Unit (Summary of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Net income available to common unitholders	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ (52,268)	$ 109,314	$ 41,510	$ 34,186	$ 217,266	$ 132,718	$ 271,583
Weighted average units outstanding—basic (in shares)									138,247,606	133,369,047	127,941,134
Stock options (in shares)									20,424	30,434	61,375
Unvested incentive units (in shares)									95,746	90,449	125,132
Market performance-based awards (in shares)									501,645	147,305	0
Weighted average units outstanding—diluted (in shares)									138,865,421	133,637,235	128,127,641
Basic (in dollars per share)	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.81	$ 0.31	$ 0.27	$ 1.57	$ 1	$ 2.12
Diluted (in dollars per share)	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.80	$ 0.31	$ 0.26	$ 1.56	$ 0.99	$ 2.12
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Net income available to common unitholders	$ (40,959)	$ 38,116	$ 119,432	$ 103,754	$ (53,363)	$ 111,586	$ 42,383	$ 34,879	$ 220,343	$ 135,485	$ 276,949
Weighted average units outstanding—basic (in shares)									140,905,897	136,122,661	130,462,534
Stock options (in shares)									20,424	30,434	61,375
Unvested incentive units (in shares)									95,746	90,449	125,132
Market performance-based awards (in shares)									501,645	147,305	0
Weighted average units outstanding—diluted (in shares)									141,523,712	136,390,849	130,649,041
Basic (in dollars per share)	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.81	$ 0.31	$ 0.27	$ 1.56	$ 1	$ 2.12
Diluted (in dollars per share)	$ (0.28)	$ 0.27	$ 0.86	$ 0.75	$ (0.39)	$ 0.80	$ 0.31	$ 0.26	$ 1.55	$ 0.99	$ 2.12

Income Per Unit (Schedule of An

Income Per Unit (Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	20,118,783	21,429,247	22,000,089
Potentially dilutive 2029 Debentures
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	1,957,963	6,649,510
Series D Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	0	470,748
Series E Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	4,301,438	4,956,175	5,176,886
Series F Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,727,962	3,143,195	3,283,169
Series G Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	3,730,042	4,297,805	3,898,376
Series H Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	5,465,987	4,320,495	0
Series I Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,235,063	0	0
Digital Realty Trust, L.P.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	17,460,492	18,675,633	19,478,689
Digital Realty Trust, L.P. | Potentially dilutive 2029 Debentures
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	1,957,963	6,649,510
Digital Realty Trust, L.P. | Series D Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	0	470,748
Digital Realty Trust, L.P. | Series E Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	4,301,438	4,956,175	5,176,886
Digital Realty Trust, L.P. | Series F Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,727,962	3,143,195	3,283,169
Digital Realty Trust, L.P. | Series G Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	3,730,042	4,297,805	3,898,376
Digital Realty Trust, L.P. | Series H Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	5,465,987	4,320,495	0
Digital Realty Trust, L.P. | Series I Preferred Stock and Unit
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,235,063	0	0

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Percentage of taxable income distributed to the partnership	100.00%
Net deferred tax liability	$ 131,196	$ 137,948
Components of Deferred Tax Assets [Abstract]
Net operating loss carryforwards	123,091	74,285
Basis difference - real estate property	103,789	42,989
Basis difference - intangibles	2,002	8,817
Other - temporary differences	9,406	9,310
Total gross deferred income tax assets	238,288	135,401
Valuation allowance	(35,266)	(23,357)
Total deferred income tax assets, net of valuation allowance	203,022	112,044
Components of Deferred Tax Liabilities [Abstract]
Basis difference - real estate property	273,155	202,499
Basis difference - intangibles	14,374	24,712
Straight-line rent	14,269	15,561
Other-temporary differences	32,420	7,220
Total gross deferred income tax liabilities	334,218	249,992
Net deferred income tax liabilities	$ 131,196	$ 137,948

Equity and Accumulated Other 80

Equity and Accumulated Other Comprehensive Loss, Net (Equity Distribution Agreements Narrative) (Details) - 2011 Equity Distribution Agreements - USD ($) $ / shares in Units, shares in Millions	Jun. 29, 2011	Dec. 31, 2015
Class of Stock [Line Items]
Aggregate offering price of the distribution agreement maximum	$ 400,000,000
Net proceeds from sale of common stock	$ 342,700,000
Issuance of common shares	5.7
Equity distribution agreements at an average price per share	$ 60.35
Payment of commissions to sales agents	$ 3,500,000
Aggregate offering price remaining available for offer and sale		$ 53,800,000

Equity and Accumulated Other 81

Equity and Accumulated Other Comprehensive Loss, Net (7.000% Series E Cumulative Convertible Preferred Stock Narrative) (Details) - Series E Preferred Stock and Unit $ / shares in Units, $ in Millions	Sep. 15, 2011USD ($)shares	Dec. 31, 2015quarter$ / sharesshares	Dec. 31, 2014$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares	11,500,000	11,500,000	11,500,000
Preferred Stock, dividend rate	7.00%	7.00%	7.00%
Gross proceeds from issuance of redeemable preferred stock | $	$ 277.2
Annual rate of dividend per share (in dollars per share)		$ 1.75
Preferred stock, liquidation preference per share/unit		25	$ 25
Preferred stock, dividends in arrears per share		0.515278
Preferred stock, redemption price per share (in dollars per share)		$ 25
Number of quarters with no dividends triggering voting rights | quarter		6
Shares issued upon conversion | shares		0.8378

Equity and Accumulated Other 82

Equity and Accumulated Other Comprehensive Loss, Net (6.625% Series F Cumulative Convertible Preferred Stock Narrative) (Details) - Series F Preferred Stock and Unit $ / shares in Units, $ in Millions	Jun. 29, 2012$ / shares	Dec. 31, 2015USD ($)quarter$ / sharesshares	Dec. 31, 2014$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares		7,300,000	7,300,000
Preferred stock, dividend rate		6.625%	6.625%
Gross proceeds from issuance of redeemable preferred stock | $		$ 176.2
Annual rate of dividend per share (in dollars per share)		$ 1.65625
Preferred stock, liquidation preference per share/unit		25	$ 25
Preferred stock, dividends in arrears per share	$ 0.395660
Preferred stock, redemption price per share (in dollars per share)		$ 25
Number of quarters with no dividends triggering voting rights | quarter		6
Shares issued upon conversion | shares		0.6843

Equity and Accumulated Other 83

Equity and Accumulated Other Comprehensive Loss, Net (5.875% Series G Cumulative Convertible Preferred Stock Narrative) (Details) - Series G Preferred Stock and Unit $ / shares in Units, $ in Millions	Jun. 28, 2013$ / shares	Apr. 09, 2013USD ($)shares	Dec. 31, 2015quarter$ / sharesshares	Dec. 31, 2014$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares		10,000,000	10,000,000	10,000,000
Preferred stock, dividend rate		5.875%	5.875%	5.875%
Gross proceeds from issuance of redeemable preferred stock | $		$ 250
Annual rate of dividend per share (in dollars per share)	$ 0.334550		$ 1.46875
Preferred stock, liquidation preference per share/unit			25	$ 25
Preferred stock, redemption price per share (in dollars per share)			$ 25
Number of quarters with no dividends triggering voting rights | quarter			6
Shares issued upon conversion | shares			0.7532

Equity and Accumulated Other 84

Equity and Accumulated Other Comprehensive Loss, Net (7.375% Series H Cumulative Convertible Preferred Stock Narrative) (Details) - Series H Preferred Stock and Unit $ / shares in Units, $ in Millions	Mar. 26, 2014USD ($)shares	Jun. 30, 2015$ / shares	Dec. 31, 2015USD ($)quarter$ / sharesshares	Dec. 31, 2014$ / sharesshares	Apr. 07, 2014shares
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares	12,000,000		14,600,000	14,600,000	2,000,000
Preferred stock, dividend rate	7.375%		7.375%	7.375%
Gross proceeds from issuance of redeemable preferred stock | $	$ 289.3		$ 353.3
Annual rate of dividend per share (in dollars per share)			$ 1.84375
Preferred Stock, liquidation preference per share/unit			25	$ 25
Preferred stock dividends per share declared (in dollars per share)		$ 0.48655
Preferred stock, redemption price per share (in dollars per share)			$ 25
Number of quarters with no dividends triggering voting rights | quarter			6
Shares issued upon conversion | shares			0.9632
Over Allotment Option
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares					600,000

Equity and Accumulated Other 85

Equity and Accumulated Other Comprehensive Loss, Net Equity and Accumulated Other Comprehensive Loss, Net (6.350% Series I Cumulative Redeemable Preferred Stock Narrative) (Details) $ / shares in Units, $ in Thousands	Dec. 31, 2015quarter$ / sharesshares	Aug. 24, 2015USD ($)$ / sharesshares	Dec. 31, 2015USD ($)quarter$ / sharesshares	Dec. 31, 2014USD ($)$ / sharesshares	Dec. 31, 2013USD ($)
Class of Stock [Line Items]
Gross proceeds from the issuance of preferred stock | $			$ 250,000	$ 365,000	$ 250,000
Series I Preferred Stock and Unit
Class of Stock [Line Items]
Net proceeds from sale of common stock (shares) | shares		10,000,000
Preferred Stock, liquidation preference per share/unit	$ 25	$ 25	$ 25	$ 0
Preferred stock dividends per share declared (in dollars per share)	$ 0.56003	$ 1.5875
Preferred stock, shares issued (in shares) | shares	10,000,000		10,000,000	0
Preferred stock, dividend rate		6.35%	6.35%	0.00%
Gross proceeds from the issuance of preferred stock | $		$ 242,000
Annual rate of dividend per share (in dollars per share)			$ 1.588
Preferred stock, redemption price per share (in dollars per share)	$ 25		$ 25
Number of quarters with no dividends triggering voting rights | quarter	6		6
Shares issued upon conversion | shares	0.76231		0.76231

Equity and Accumulated Other 86

Equity and Accumulated Other Comprehensive Loss, Net (Ownership Interest In The Operating Partnership) (Details) $ in Millions	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)shares
Class of Stock [Line Items]
Partners' capital account units	146,384,247	135,626,255
Percentage of total	98.10%	97.80%
Redeemable noncontrolling interest | $	$ 192.7	$ 179
Common stock conversion ratio	1
Common units held by third parties
Class of Stock [Line Items]
Common units held by third parties	1,421,314	1,463,814
Percentage of total	1.00%	1.10%
Incentive Units Held By Employees And Directors
Class of Stock [Line Items]
Incentive units held by employees and directors	1,412,012	1,549,847
Percentage of total	0.90%	1.10%
Noncontrolling Interests in Operating Partnership
Class of Stock [Line Items]
Partners' capital account units	149,217,573	138,639,916
Percentage of total	100.00%	100.00%

Equity and Accumulated Other 87

Equity and Accumulated Other Comprehensive Loss, Net (Summary of Activity for Noncontrolling Interests in the Operating Partnership) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Noncontrolling Interest, Shares [Roll Forward]
Beginning balance	3,013,661	2,967,021	2,851,400
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(42,500)	(28,000)	(24,000)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(113,508)	(106,073)	(33,138)
Vesting of Class C Units (2007 Grant)			(19,483)
Cancellation of incentive units held by employees and directors	(151,579)	(18,773)
Grant of incentive units to employees and directors	127,252	199,486	192,242
Ending balance	2,833,326	3,013,661	2,967,021
Common Units
Noncontrolling Interest, Shares [Roll Forward]
Beginning balance	1,463,814	1,491,814	1,515,814
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(42,500)	(28,000)	(24,000)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	0	0	0
Vesting of Class C Units (2007 Grant)			0
Cancellation of incentive units held by employees and directors	0	0
Grant of incentive units to employees and directors	0		0
Ending balance	1,421,314	1,463,814	1,491,814
Incentive Units
Noncontrolling Interest, Shares [Roll Forward]
Beginning balance	1,549,847	1,475,207	1,335,586
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	0	0	0
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(113,508)	(106,073)	(33,138)
Vesting of Class C Units (2007 Grant)			(19,483)
Cancellation of incentive units held by employees and directors	(151,579)	(18,773)
Grant of incentive units to employees and directors	127,252	199,486	192,242
Ending balance	1,412,012	1,549,847	1,475,207

Equity and Accumulated Other 88

Equity and Accumulated Other Comprehensive Loss, Net (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 24, 2015	Mar. 26, 2014	Jun. 28, 2013	Apr. 09, 2013	Sep. 15, 2011	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Feb. 26, 2013
Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 0	$ 0	$ 0
Annual rate of dividend per share (in dollars per share)						$ 1.375
Shares issued upon conversion									0.6360
Series D Preferred Stock and Unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series D Preferred Stock and Unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series D Preferred Stock and Unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series D Preferred Stock and Unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series D Preferred Stock and Unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series D Preferred Stock and Unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series D Preferred Stock and Unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series D Preferred Stock and Unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series D Preferred Stock and Unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 0
Series D Preferred Stock and Unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Series D Preferred Stock and Unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Series D Preferred Stock and Unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 20,124	$ 20,124	20,124
Annual rate of dividend per share (in dollars per share)						$ 1.75
Preferred stock, dividend rate					7.00%	7.00%	7.00%
Shares issued upon conversion						0.8378
Series E Preferred Stock and Unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 5,031
Series E Preferred Stock and Unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Series E Preferred Stock and Unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Series E Preferred Stock and Unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Series E Preferred Stock and Unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 5,031
Series E Preferred Stock and Unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Series E Preferred Stock and Unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Series E Preferred Stock and Unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 12,092	$ 12,092	12,092
Annual rate of dividend per share (in dollars per share)						$ 1.65625
Preferred stock, dividend rate						6.625%	6.625%
Shares issued upon conversion						0.6843
Series F Preferred Stock and Unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 3,023
Series F Preferred Stock and Unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Series F Preferred Stock and Unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Series F Preferred Stock and Unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Series F Preferred Stock and Unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 3,023
Series F Preferred Stock and Unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Series F Preferred Stock and Unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Series F Preferred Stock and Unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 14,688	$ 14,688	10,689
Annual rate of dividend per share (in dollars per share)			$ 0.334550			$ 1.46875
Preferred stock, dividend rate				5.875%		5.875%	5.875%
Shares issued upon conversion						0.7532
Series G Preferred Stock and Unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series G Preferred Stock and Unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,345
Series G Preferred Stock and Unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 3,672
Series G Preferred Stock and Unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Series G Preferred Stock and Unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Series G Preferred Stock and Unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Series G Preferred Stock and Unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 3,672
Series G Preferred Stock and Unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Series G Preferred Stock and Unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Series G Preferred Stock and Unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 26,920	$ 20,564	0
Annual rate of dividend per share (in dollars per share)						$ 1.84375
Preferred stock, dividend rate		7.375%				7.375%	7.375%
Shares issued upon conversion						0.9632
Series H Preferred Stock and Unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series H Preferred Stock and Unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series H Preferred Stock and Unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series H Preferred Stock and Unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series H Preferred Stock and Unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 0
Series H Preferred Stock and Unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							7,104
Series H Preferred Stock and Unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Series H Preferred Stock and Unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Series H Preferred Stock and Unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 6,730
Series H Preferred Stock and Unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Series H Preferred Stock and Unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Series H Preferred Stock and Unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 5,600	$ 0	0
Annual rate of dividend per share (in dollars per share)						$ 1.588
Preferred stock, dividend rate	6.35%					6.35%	0.00%
Shares issued upon conversion						0.76231
Series I Preferred Stock and Unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 0
Series I Preferred Stock and Unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series I Preferred Stock and Unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series I Preferred Stock and Unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series I Preferred Stock and Unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 0
Series I Preferred Stock and Unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Series I Preferred Stock and Unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Series I Preferred Stock and Unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,600
Common stock and common unit
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						470,748	444,103	$ 400,701
Common stock dividend per share amount (in dollars per share)								$ 3.120
Common stock and common unit | Installment 1 Year One
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 100,165
Common stock and common unit | Installment 2 Year One
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								100,169
Common stock and common unit | Installment 3 Year One
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								100,180
Common stock and common unit | Installment 4 Year One
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 100,187
Common stock and common unit | Installment 1 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							106,743
Common stock and common unit | Installment 2 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							112,357
Common stock and common unit | Installment 3 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							112,465
Common stock and common unit | Installment 4 Year Two
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							$ 112,538
Common stock dividend per share amount (in dollars per share)							$ 3.320
Common stock and common unit | Installment 1 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						115,419
Common stock and common unit | Installment 2 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						115,458
Common stock and common unit | Installment 3 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						115,454
Common stock and common unit | Installment 4 Year Three
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						$ 124,417
Common stock dividend per share amount (in dollars per share)						$ 3.400

Equity and Accumulated Other 89

Equity and Accumulated Other Comprehensive Loss, Net (Schedule of Accumulated Other Comprehensive Loss, Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	$ (45,046)	$ 10,691
Net current period change	(54,113)	(59,087)
Reclassification to interest expense from interest rate swaps	2,569	3,350
Accumulated other comprehensive loss, net, Ending balance	(96,590)	(45,046)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(39,567)	11,745
Net current period change	(50,775)	(51,312)
Reclassification to interest expense from interest rate swaps	0	0
Accumulated other comprehensive loss, net, Ending balance	(90,342)	(39,567)
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(5,479)	(1,054)
Net current period change	(3,338)	(7,775)
Reclassification to interest expense from interest rate swaps	2,569	3,350
Accumulated other comprehensive loss, net, Ending balance	$ (6,248)	$ (5,479)

Capital and Accumulated Other90

Capital and Accumulated Other Comprehensive Income (Loss) (7.000% Series E Cumulative Convertible Preferred Units Narrative) (Details) - Series E Preferred Stock and Unit - $ / shares	Sep. 15, 2011	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2011
Class of Stock [Line Items]
Preferred stock, dividend rate	7.00%	7.00%	7.00%
Annual rate of dividend per share (in dollars per share)		$ 1.75
Preferred stock, liquidation preference per share/unit		25	$ 25
Preferred stock, dividends in arrears per share		0.515278
Preferred stock, redemption price per share (in dollars per share)		$ 25
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in shares)	11,500,000	11,500,000	11,500,000
Preferred stock, dividend rate	7.00%	7.00%	7.00%
Annual rate of dividend per share (in dollars per share)	$ 1.750
Preferred stock, liquidation preference per share/unit	$ 25	$ 25	$ 25
Preferred stock, dividends in arrears per share				$ 0.515278
Preferred stock, redemption price per share (in dollars per share)		$ 25

Capital and Accumulated Other91

Capital and Accumulated Other Comprehensive Income (Loss) (6.625% Series F Cumulative Convertible Preferred Units Narrative) (Details) - Series F Preferred Stock and Unit - $ / shares	Jun. 29, 2012	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Preferred stock, dividend rate		6.625%	6.625%
Annual rate of dividend per share (in dollars per share)		$ 1.65625
Preferred stock, liquidation preference per share/unit		25	$ 25
Preferred stock, dividends in arrears per share	$ 0.395660
Preferred stock, redemption price per share (in dollars per share)		$ 25
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in shares)		7,300,000	7,300,000
Preferred stock, dividend rate		6.625%	6.625%
Annual rate of dividend per share (in dollars per share)		$ 1.65625
Preferred stock, liquidation preference per share/unit		25	$ 25
Preferred stock, dividends in arrears per share	$ 0.39566
Preferred stock, redemption price per share (in dollars per share)		$ 25

Capital and Accumulated Other92

Capital and Accumulated Other Comprehensive Income (Loss) (5.875% Series G Cumulative Convertible Preferred Units Narrative) (Details) - Series G Preferred Stock and Unit - $ / shares	Jun. 28, 2013	Apr. 09, 2013	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Preferred stock, dividend rate		5.875%	5.875%	5.875%
Annual rate of dividend per share (in dollars per share)	$ 0.334550		$ 1.46875
Preferred stock, liquidation preference per share/unit			25	$ 25
Preferred stock, redemption price per share (in dollars per share)			$ 25
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in shares)		10,000,000	10,000,000	10,000,000
Preferred stock, dividend rate		5.875%	5.875%	5.875%
Annual rate of dividend per share (in dollars per share)			$ 1.46875
Preferred stock, liquidation preference per share/unit			25	$ 25
Preferred stock, dividends in arrears per share	$ 0.334550
Preferred stock, redemption price per share (in dollars per share)			$ 25

Capital and Accumulated Other93

Capital and Accumulated Other Comprehensive Income (Loss) (7.375% Series H Cumulative Redeemable Preferred Units Narrative) (Details) - Series H Preferred Stock and Unit - $ / shares	Jun. 30, 2014	Mar. 26, 2014	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Preferred stock, dividend rate		7.375%		7.375%	7.375%
Annual rate of dividend per share (in dollars per share)				$ 1.84375
Preferred stock, liquidation preference per share/unit				$ 25	$ 25
Preferred stock dividends per share declared (in dollars per share)			$ 0.48655
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in shares)				14,600,000	14,600,000
Preferred stock, dividend rate				7.375%	7.375%
Annual rate of dividend per share (in dollars per share)				$ 1.84375
Preferred stock, liquidation preference per share/unit				$ 25	$ 25
Preferred stock dividends per share declared (in dollars per share)	$ 0.48655

Capital and Accumulated Other94

Capital and Accumulated Other Comprehensive Income (Loss) Capital and Accumulated Other Comprehensive Income (Loss) (6.350% Series I Cumulative Redeemable Preferred Units Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2015	Oct. 08, 2015	Aug. 24, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Gross proceeds from the issuance of preferred stock				$ 250,000	$ 365,000	$ 250,000
Intercompany Loans, Interest Rate, Stated Percentage			4.50%
Series I Preferred Stock and Unit
Class of Stock [Line Items]
Preferred stock, dividend rate			6.35%	6.35%	0.00%
Annual rate of dividend per share (in dollars per share)				$ 1.588
Preferred stock, liquidation preference per share/unit	$ 25		$ 25	$ 25	$ 0
Net proceeds from sale of common stock (shares)			10,000,000
Gross proceeds from the issuance of preferred stock			$ 242,000
Intercompany Loans, Amount Borrowed			$ 242,700
Preferred stock dividends per share declared (in dollars per share)	$ 0.56003		$ 1.5875
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Intercompany Loans, Extinguishment of Debt, Amount		$ 244,100
Digital Realty Trust, L.P. | Series I Preferred Stock and Unit
Class of Stock [Line Items]
Preferred units, issued (in shares)	10,000,000	10,000,000		10,000,000	0
Preferred stock, dividend rate		6.35%		6.35%	0.00%
Annual rate of dividend per share (in dollars per share)		$ 1.5875
Preferred stock, liquidation preference per share/unit	$ 25	$ 25		$ 25	$ 0
Preferred stock dividends per share declared (in dollars per share)				$ 0.56003

Capital and Accumulated Other95

Capital and Accumulated Other Comprehensive Income (Loss) (Partnership Units Narrative) (Details) $ in Millions	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Class of Stock [Line Items]
Common stock conversion ratio	1
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Common stock conversion ratio	1
Redemption value of common units	$ 192.7	$ 179

Capital and Accumulated Other96

Capital and Accumulated Other Comprehensive Income (Loss) (Schedule of Distributions) (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 08, 2015	Aug. 24, 2015	Mar. 26, 2014	Apr. 09, 2013	Sep. 15, 2011	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Feb. 26, 2013
Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 0	$ 0	$ 0
Shares issued upon conversion									0.6360
Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 0	0	0
Common stock dividend per share amount (in dollars per share)						$ 1.375
Shares issued upon conversion									0.6360
Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 20,124	$ 20,124	20,124
Preferred stock, dividend rate					7.00%	7.00%	7.00%
Shares issued upon conversion						0.8378
Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 20,124	$ 20,124	20,124
Common stock dividend per share amount (in dollars per share)						$ 1.75
Preferred stock, dividend rate					7.00%	7.00%	7.00%
Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 12,092	$ 12,092	12,092
Preferred stock, dividend rate						6.625%	6.625%
Shares issued upon conversion						0.6843
Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 12,092	$ 12,092	12,092
Common stock dividend per share amount (in dollars per share)						$ 1.65625
Preferred stock, dividend rate						6.625%	6.625%
Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 14,688	$ 14,688	10,689
Preferred stock, dividend rate				5.875%		5.875%	5.875%
Shares issued upon conversion						0.7532
Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 14,688	$ 14,688	10,689
Common stock dividend per share amount (in dollars per share)						$ 1.46875
Preferred stock, dividend rate				5.875%		5.875%	5.875%
Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 26,920	$ 20,564	0
Preferred stock, dividend rate			7.375%			7.375%	7.375%
Shares issued upon conversion						0.9632
Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 26,920	$ 20,564	0
Common stock dividend per share amount (in dollars per share)						$ 1.84375
Preferred stock, dividend rate						7.375%	7.375%
Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 5,600	$ 0	0
Preferred stock, dividend rate		6.35%				6.35%	0.00%
Shares issued upon conversion						0.76231
Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 5,600	$ 0	0
Common stock dividend per share amount (in dollars per share)						$ 1.588
Preferred stock, dividend rate	6.35%					6.35%	0.00%
Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						$ 480,623	$ 454,414	$ 410,028
Common stock dividend per share amount (in dollars per share)						$ 3.400	$ 3.320	$ 3.120
Installment 1 Year One | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 0
Installment 1 Year One | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 1 Year One | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 1 Year One | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 1 Year One | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 1 Year One | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 1 Year One | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								102,506
Installment 2 Year One | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 2 Year One | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 2 Year One | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 2 Year One | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 2 Year One | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 2 Year One | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 2 Year One | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,345
Installment 2 Year One | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,345
Installment 2 Year One | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 2 Year One | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 2 Year One | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 2 Year One | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 2 Year One | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								102,507
Installment 3 Year One | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 3 Year One | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 3 Year One | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 3 Year One | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 3 Year One | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 3 Year One | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 3 Year One | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Installment 3 Year One | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Installment 3 Year One | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 3 Year One | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 3 Year One | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 3 Year One | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 3 Year One | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								102,506
Installment 4 Year One | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 4 Year One | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 4 Year One | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 4 Year One | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Installment 4 Year One | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 4 Year One | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Installment 4 Year One | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Installment 4 Year One | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Installment 4 Year One | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 4 Year One | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 4 Year One | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 4 Year One | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Installment 4 Year One | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 102,509
Installment 1 Year Two | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 0
Installment 1 Year Two | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 1 Year Two | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 1 Year Two | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 1 Year Two | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 1 Year Two | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 1 Year Two | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 1 Year Two | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 1 Year Two | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 1 Year Two | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 1 Year Two | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 1 Year Two | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 1 Year Two | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							109,378
Installment 2 Year Two | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 2 Year Two | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 2 Year Two | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 2 Year Two | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 2 Year Two | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 2 Year Two | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 2 Year Two | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 2 Year Two | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 2 Year Two | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							7,104
Installment 2 Year Two | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							7,104
Installment 2 Year Two | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 2 Year Two | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 2 Year Two | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							115,008
Installment 3 Year Two | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 3 Year Two | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 3 Year Two | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 3 Year Two | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 3 Year Two | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 3 Year Two | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 3 Year Two | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 3 Year Two | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 3 Year Two | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Installment 3 Year Two | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Installment 3 Year Two | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 3 Year Two | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 3 Year Two | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							115,012
Installment 4 Year Two | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 4 Year Two | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 4 Year Two | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 4 Year Two | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Installment 4 Year Two | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 4 Year Two | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Installment 4 Year Two | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 4 Year Two | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Installment 4 Year Two | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Installment 4 Year Two | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Installment 4 Year Two | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 4 Year Two | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Installment 4 Year Two | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							$ 115,016
Installment 1 Year Three | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 0
Installment 1 Year Three | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 1 Year Three | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 1 Year Three | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 1 Year Three | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 1 Year Three | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 1 Year Three | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 1 Year Three | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 1 Year Three | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 1 Year Three | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 1 Year Three | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 1 Year Three | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 1 Year Three | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						117,896
Installment 2 Year Three | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 2 Year Three | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 2 Year Three | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 2 Year Three | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 2 Year Three | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 2 Year Three | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 2 Year Three | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 2 Year Three | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 2 Year Three | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 2 Year Three | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 2 Year Three | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 2 Year Three | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 2 Year Three | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						117,938
Installment 3 Year Three | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 3 Year Three | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 3 Year Three | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 3 Year Three | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 3 Year Three | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 3 Year Three | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 3 Year Three | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 3 Year Three | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 3 Year Three | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 3 Year Three | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 3 Year Three | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 3 Year Three | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 3 Year Three | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						117,962
Installment 4 Year Three | Series D Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 4 Year Three | Series D Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Installment 4 Year Three | Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 4 Year Three | Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Installment 4 Year Three | Series F Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 4 Year Three | Series F Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Installment 4 Year Three | Series G Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 4 Year Three | Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Installment 4 Year Three | Series H Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 4 Year Three | Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Installment 4 Year Three | Series I Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,600
Installment 4 Year Three | Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,600
Installment 4 Year Three | Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						$ 126,827

Capital and Accumulated Other97

Capital and Accumulated Other Comprehensive Income (Loss) (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	$ (45,046)	$ 10,691
Net current period change	(54,113)	(59,087)
Reclassification to interest expense from interest rate swaps	2,569	3,350
Accumulated other comprehensive loss, net, Ending balance	(96,590)	(45,046)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(39,567)	11,745
Net current period change	(50,775)	(51,312)
Reclassification to interest expense from interest rate swaps	0	0
Accumulated other comprehensive loss, net, Ending balance	(90,342)	(39,567)
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(5,479)	(1,054)
Net current period change	(3,338)	(7,775)
Reclassification to interest expense from interest rate swaps	2,569	3,350
Accumulated other comprehensive loss, net, Ending balance	(6,248)	(5,479)
Digital Realty Trust, L.P.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(48,433)	8,457
Net current period change	(55,152)	(60,309)
Reclassification to interest expense from interest rate swaps	2,621	3,419
Accumulated other comprehensive loss, net, Ending balance	(100,964)	(48,433)
Digital Realty Trust, L.P. | Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(42,138)	10,235
Net current period change	(51,745)	(52,373)
Reclassification to interest expense from interest rate swaps	0	0
Accumulated other comprehensive loss, net, Ending balance	(93,883)	(42,138)
Digital Realty Trust, L.P. | Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance	(6,295)	(1,778)
Net current period change	(3,407)	(7,936)
Reclassification to interest expense from interest rate swaps	2,621	3,419
Accumulated other comprehensive loss, net, Ending balance	$ (7,081)	$ (6,295)

Incentive Plan (Narrative) (Det

Incentive Plan (Narrative) (Details) - USD ($)	May. 02, 2007	Dec. 31, 2015
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	$ 10,000,000
Number of shares remaining for issuance under the "Incentive Plan"		4,737,954
2004 Incentive Award Plan
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
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 Incentive Plan (

Incentive Plan Incentive Plan (Long-Term Incentive Units) (Details) - Long-Term Incentive Units - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares:
Unvested units, ending (in shares)	280,891	314,415
Units granted (in shares)	127,252
Units vested (in shares)	(143,898)
Units cancelled or expired (in shares)	(16,878)
Unvested units, beginning (in shares)	314,415
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 59.34
Granted (in dollars per share)	66.99
Vested (in dollars per share)	59.65
Cancelled (in dollars per share)	58.13
Ending balance (in dollars per share)	$ 62.72	$ 59.34
Share/unit compensation expense	$ 5.9	$ 12.6	$ 8.9
Capitalized expense related to construction and leasing activities	1.2	1.7	$ 1.6
Unearned compensation	$ 9.9	$ 9.3
Unearned compensation, period of recognition	863 days

Incentive Plan (2014 and 2015 M

Incentive Plan (2014 and 2015 Market Performance-Based Awards) (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)simulationshares	Dec. 31, 2014USD ($)
Market Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of trials run | simulation	100,000
Fair value of awards	$ 34.3
Expected service period	4 years
Unearned compensation	$ 17.8	$ 9.5
Compensation expense	4.1	3
Capitalized expense related to construction and leasing activities	$ 4.1	$ 1.4
Class D Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares) | shares	1,148,991
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares) | shares	368,878
2014 Performance Grant | Market Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
Expected volatility rate	33.00%
Risk free interest rate	0.67%
2014 Performance Grant | Market Performance-Based Awards | Below Threshold Level (less than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Performance threshold percentage	0.00%
2014 Performance Grant | Market Performance-Based Awards | Threshold Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Performance threshold percentage	0.00%
2014 Performance Grant | Market Performance-Based Awards | Target Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Performance threshold percentage	3.25%
2014 Performance Grant | Market Performance-Based Awards | High Level (greater than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	100.00%
Performance threshold percentage	6.50%
2014 Performance Grant | Market Performance-Based Awards | Share Based Compensation Award Tranche Fifth
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2014 Performance Grant | Market Performance-Based Awards | Share Based Compensation Award Tranche Six
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2015 Performance Grant | Market Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
Expected volatility rate	24.00%
Risk free interest rate	1.00%
2015 Performance Grant | Market Performance-Based Awards | Below Threshold Level (less than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Performance threshold percentage	(3.00%)
2015 Performance Grant | Market Performance-Based Awards | Threshold Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Performance threshold percentage	(3.00%)
2015 Performance Grant | Market Performance-Based Awards | Target Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Performance threshold percentage	1.00%
2015 Performance Grant | Market Performance-Based Awards | High Level (greater than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	100.00%
Performance threshold percentage	5.00%
2015 Performance Grant | Market Performance-Based Awards | Share Based Compensation Award Tranche Fifth
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2015 Performance Grant | Market Performance-Based Awards | Share Based Compensation Award Tranche Six
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%

Incentive Plan (Summary of Ince

Incentive Plan (Summary of Incentive Award Plan's Stock Option) (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Shares:
Options outstanding, beginning of period (in shares) | shares	80,933
Exercised (in shares) | shares	(29,311)
Options outstanding, end of period (in shares) | shares	51,622
Exercisable, end of period (in shares) | shares	51,622
Weighted average exercise price
Options outstanding, beginning of period (in dollars per share) | $ / shares	$ 37.25
Exercised (in dollars per share) | $ / shares	30.58
Options outstanding, end of period (in dollars per share) | $ / shares	41.04
Exercisable, end of period (in dollars per share) | $ / shares	$ 41.04

Incentive Plan (Summary of Stoc

Incentive Plan (Summary of Stock Options Outstanding and Exercisable) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding	51,622	80,933
Weighted average remaining contractual life (years), Outstanding	473 days
Weighted average exercise price per option, Outstanding	$ 41.04
Aggregate intrinsic value, Outstanding	$ 1,785,166
$ 33.18
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in shares)	$ 33.18
Number of options outstanding	4,175
Weighted average remaining contractual life (years), Outstanding	305 days
Weighted average exercise price per option, Outstanding	$ 33.18
Aggregate intrinsic value, Outstanding	$ 177,187
$ 41.73
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, upper limit (in shares)	$ 41.73
Number of options outstanding	47,447
Weighted average remaining contractual life (years), Outstanding	488 days
Weighted average exercise price per option, Outstanding	$ 41.73
Aggregate intrinsic value, Outstanding	$ 1,607,979

Incentive Plan (Restricted Stoc

Incentive Plan (Restricted Stock Activity) (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares:
Unvested units, beginning (in shares)	302,298
Units granted (in shares)	109,780
Units vested (in shares)	(99,988)
Units cancelled or expired (in shares)	(41,376)
Unvested units, ending (in shares)	270,714	302,298
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 57.10
Granted (in dollars per share)	66.90
Vested (in dollars per share)	59.57
Cancelled (in dollars per share)	56.85
Ending balance (in dollars per share)	$ 60.20	$ 57.10
Additional Information:
Restricted stock expense	$ 2.5	$ 2.5	$ 2.7
Capitalized expense related to construction and leasing activities	2.7	2.7	$ 2.5
Compensation not yet recognized	$ 10.4	$ 10.4
Unearned compensation, period of recognition	883 days
Minimum
Additional Information:
Award vesting period	3 years
Maximum
Additional Information:
Award vesting period	4 years

Incentive Plan (401(k)) (Narrat

Incentive Plan (401(k)) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Vesting percentage of discretionary contributions	100.00%
Aggregate cost of contributions to the 401(k) Plan	$ 3.4	$ 2.8	$ 2.4

Derivative Instruments (Details

Derivative Instruments (Details)	Jan. 13, 2015USD ($)	Jan. 31, 2014	Dec. 31, 2015USD ($)$ / SGD	Dec. 31, 2014USD ($)$ / SGD	Dec. 31, 2013USD ($)
Derivative [Line Items]
Lender accelerated indebtedness repayment threshold amount			$ 75,000,000
Fair value of effective cash flow hedges			1,100,000	$ (2,400,000)
Ineffective portion of cash flow hedges			0	800,000	$ 0
Gain (loss) to be reclassified within twelve months			(700,000)
Notional Amount			469,484,000	703,870,000
Fair Value at Significant Other Observable Inputs (Level 2)			1,143,000	(2,409,000)
Gain (loss) on cash flow hedge ineffectiveness			$ (1,600,000)	800,000	$ 0
Designated as Hedging Instrument | Cash Flow Hedging
Derivative [Line Items]
Derivative term of contract		5 years
Gain (loss) on cash flow hedge ineffectiveness				$ 800,000
Payments for derivative instruments	$ 5,700,000
Singapore dollar (SGD)
Derivative [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / SGD			0.70	0.75
Currently-paying contracts
Derivative [Line Items]
Notional Amount			$ 469,484,000	$ 553,870,000
Fair Value at Significant Other Observable Inputs (Level 2)			1,143,000	428,000
Currently-paying contracts | Swap 1
Derivative [Line Items]
Notional Amount			$ 335,905,000	410,905,000
Strike Rate			0.717%
Fair Value at Significant Other Observable Inputs (Level 2)			$ (357,000)	(241,000)
Currently-paying contracts | Swap 2
Derivative [Line Items]
Notional Amount			$ 133,579,000	142,965,000
Strike Rate			0.925%
Fair Value at Significant Other Observable Inputs (Level 2)			$ 1,500,000	669,000
Forward-starting contracts
Derivative [Line Items]
Notional Amount			$ 0	150,000,000
Strike Rate			2.091%
Fair Value at Significant Other Observable Inputs (Level 2)			$ 0	$ (2,837,000)

Fair Value of Instruments (Esti

Fair Value of Instruments (Estimated Fair Value and Carrying Amounts) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	$ 17,900	$ 15,600
3.400% Notes Due 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate (as a percent)	3.40%
3.950% Notes Due 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate (as a percent)	3.95%
3.625% notes due 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate (as a percent)	3.625%
4.750% Notes Due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate (as a percent)	4.75%
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Exchangeable senior debentures	$ 3,868,979	2,968,073
Mortgage Loans	313,717	399,569
Long-term Debt	6,075,148	4,870,193
Estimated Fair Value | Global revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	967,884	525,951
Estimated Fair Value | Unsecured term loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	924,568	976,600
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Exchangeable senior debentures	3,738,606	2,791,758
Mortgage Loans	303,183	378,818
Long-term Debt	5,934,241	4,673,127
Carrying Value | Global revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	967,884	525,951
Carrying Value | Unsecured term loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	$ 924,568	$ 976,600

Tenant Leases (Schedule of Futu

Tenant Leases (Schedule of Future Minimum Lease Payments to be Received) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Receivable [Abstract]
2,016	$ 1,379,451
2,017	1,260,324
2,018	1,125,712
2,019	988,289
2,020	769,150
Thereafter	2,948,210
Total	$ 8,471,136

Commitments and Contingencie108

Commitments and Contingencies (Details) $ in Thousands, £ in Millions, SGD in Millions	12 Months Ended					30 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2015GBP (£)	Dec. 31, 2014USD ($)	Dec. 31, 2014GBP (£)	Dec. 31, 2013USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2014GBP (£)	Dec. 31, 2015SGD	Jul. 11, 2012USD ($)	Jul. 11, 2012GBP (£)
Commitments and Contingencies [Line Items]
Lease term	12 years	12 years
Lease term extension	5 years	5 years
Rent expense	$ 24,600		$ 16,200		$ 23,100
Straight-line rent expense adjustment					10,000
Straight-line rent adjustments related to prior years					7,500
Increase (decrease) in fair value of contingent consideration	(44,276)		(8,093)		(1,762)
Commitments related to construction contracts	157,600
29A International Business Park
Commitments and Contingencies [Line Items]
Additional performance based consideration earned (maximum)	35,200							SGD 50
Contingent liability	19,400		12,600			$ 12,600
Sentrum Portfolio
Commitments and Contingencies [Line Items]
Contingent liability									$ 87,600	£ 56.5
Earnout payment	1,100	£ 0.7	10,300	£ 6.2		$ 37,200	£ 23.8
Increase (decrease) in fair value of contingent consideration	(43,000)	£ (30.3)	$ (8,400)		$ (1,800)
Convergence Business Park
Commitments and Contingencies [Line Items]
Sale price of building	24,000
Real estate price, per square acre	$ 225

Commitments And Contingencie109

Commitments And Contingencies (Schedule of Future Minimum Lease Payments) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	$ 54,713
2,017	62,581
2,018	65,417
2,019	69,709
2,020	72,433
Thereafter	699,590
Total minimum commitment under leases	$ 1,024,443

Quarterly Financial Informat110

Quarterly Financial Information (Digital Realty Trust, Inc.) (Summary Of Selected Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Total operating revenues	$ 500,443	$ 435,989	$ 420,295	$ 406,609	$ 412,216	$ 412,186	$ 401,446	$ 390,590	$ 1,763,336	$ 1,616,438	$ 1,482,259
Net income	(16,573)	57,842	137,997	122,325	(34,795)	130,161	61,332	46,717	301,591	203,415	320,449
Net income (loss) attributable to Digital Realty Trust, Inc.	(15,983)	56,978	135,511	120,183	(33,813)	127,769	60,339	45,912	296,689	200,183	314,488
Preferred unit distributions	24,056	18,456	18,456	18,455	18,455	18,455	18,829	11,726	79,423	67,465	42,905
Net income available to common unitholders	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ (52,268)	$ 109,314	$ 41,510	$ 34,186	$ 217,266	$ 132,718	$ 271,583
Basic net income per unit available to common unitholders	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.81	$ 0.31	$ 0.27	$ 1.57	$ 1	$ 2.12
Diluted net income per unit available to common unitholders	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.80	$ 0.31	$ 0.26	$ 1.56	$ 0.99	$ 2.12

Quarterly Financial Informat111

Quarterly Financial Information (Digital Realty Trust, L.P.) (Summary Of Selected Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information [Line Items]
Total operating revenues	$ 500,443	$ 435,989	$ 420,295	$ 406,609	$ 412,216	$ 412,186	$ 401,446	$ 390,590	$ 1,763,336	$ 1,616,438	$ 1,482,259
Net income	(16,573)	57,842	137,997	122,325	(34,795)	130,161	61,332	46,717	301,591	203,415	320,449
Net income attributable to Digital Realty Trust, L.P.	(15,983)	56,978	135,511	120,183	(33,813)	127,769	60,339	45,912	296,689	200,183	314,488
Preferred unit distributions	24,056	18,456	18,456	18,455	18,455	18,455	18,829	11,726	79,423	67,465	42,905
Net income available to common unitholders	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ (52,268)	$ 109,314	$ 41,510	$ 34,186	$ 217,266	$ 132,718	$ 271,583
Basic net income per unit available to common unitholders	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.81	$ 0.31	$ 0.27	$ 1.57	$ 1	$ 2.12
Diluted net income per unit available to common unitholders	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.80	$ 0.31	$ 0.26	$ 1.56	$ 0.99	$ 2.12
Digital Realty Trust, L.P.
Quarterly Financial Information [Line Items]
Total operating revenues	$ 500,443	$ 435,989	$ 420,295	$ 406,609	$ 412,216	$ 412,186	$ 401,446	$ 390,590	$ 1,763,336	$ 1,616,438	$ 1,482,259
Net income	(16,785)	56,689	137,997	122,325	(34,795)	130,161	61,332	46,717	300,226	203,415	320,449
Net income attributable to Digital Realty Trust, L.P.	(16,903)	56,572	137,888	122,209	(34,908)	130,041	61,212	46,605	299,766	202,950	319,854
Preferred unit distributions	24,056	18,456	18,456	18,455	18,455	18,455	18,829	11,726	79,423	67,465	42,905
Net income available to common unitholders	$ (40,959)	$ 38,116	$ 119,432	$ 103,754	$ (53,363)	$ 111,586	$ 42,383	$ 34,879	$ 220,343	$ 135,485	$ 276,949
Basic net income per unit available to common unitholders	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ (0.39)	$ 0.81	$ 0.31	$ 0.27	$ 1.56	$ 1	$ 2.12
Diluted net income per unit available to common unitholders	$ (0.28)	$ 0.27	$ 0.86	$ 0.75	$ (0.39)	$ 0.80	$ 0.31	$ 0.26	$ 1.55	$ 0.99	$ 2.12

Subsequent Events (Sale of Kato

Subsequent Events (Sale of Kato Road and Page Avenue) (Details) ft² in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016USD ($)	Jan. 21, 2016USD ($)ft²property	Dec. 31, 2015USD ($)property
Subsequent Event [Line Items]
Number of real estate properties | property			139
Disposal group consideration			$ 215.3
47700 Kato Road and 1055 Page Avenue | Subsequent event
Subsequent Event [Line Items]
Number of real estate properties | property		2
Square footage of real estate property | ft²		199
Disposal group consideration		$ 37.5
47700 Kato Road and 1055 Page Avenue | Forecast | Subsequent event
Subsequent Event [Line Items]
Proceeds from divestiture of business	$ 35.8
Gain (loss) on disposal	$ 1.2

Subsequent Events (Dividends De

Subsequent Events (Dividends Declared and Distributions Per Unit) (Details) - $ / shares	Feb. 17, 2016	Jun. 28, 2013	Dec. 31, 2015
Series E Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)			$ 1.75
Series F Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)			1.65625
Series G Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)		$ 0.334550	1.46875
Series H Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)			1.84375
Series I Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)			$ 1.588
Subsequent event | Series E Preferred Stock and Unit
Subsequent Event [Line Items]
Dividend and distribution amount (per share)	$ 0.437500
Dividend and distribution payable date	Mar. 31, 2016
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2016
Annual rate of dividend per share (in dollars per share)	$ 1.750
Subsequent event | Series F Preferred Stock and Unit
Subsequent Event [Line Items]
Dividend and distribution amount (per share)	$ 0.414063
Dividend and distribution payable date	Mar. 31, 2016
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2016
Annual rate of dividend per share (in dollars per share)	$ 1.656
Subsequent event | Series G Preferred Stock and Unit
Subsequent Event [Line Items]
Dividend and distribution amount (per share)	$ 0.367188
Dividend and distribution payable date	Mar. 31, 2016
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2016
Annual rate of dividend per share (in dollars per share)	$ 1.469
Subsequent event | Series H Preferred Stock and Unit
Subsequent Event [Line Items]
Dividend and distribution amount (per share)	$ 0.460938
Dividend and distribution payable date	Mar. 31, 2016
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2016
Annual rate of dividend per share (in dollars per share)	$ 1.844
Subsequent event | Series I Preferred Stock and Unit
Subsequent Event [Line Items]
Dividend and distribution amount (per share)	$ 0.396875
Dividend and distribution payable date	Mar. 31, 2016
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2016
Annual rate of dividend per share (in dollars per share)	$ 1.588
Subsequent event | Common stock and common unit
Subsequent Event [Line Items]
Dividend and distribution amount (per share)	$ 0.880000
Dividend and distribution payable date	Mar. 31, 2016
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2016
Annual rate of dividend per share (in dollars per share)	$ 3.520

Schedule III Properties And 114

Schedule III Properties And Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 303,183
Land, Initial costs	731,863
Acquired ground lease, Initial costs	14,986
Buildings and improvements, Initial costs	5,014,720
Costs capitalized subsequent to acquisition, Improvements	5,156,151
Costs capitalized subsequent to acquisition, Carry costs	(5,900)
Land, Total costs	689,573
Acquired ground lease, Total costs	12,639
Buildings and improvements, Total costs	10,213,161
Total	10,915,373	$ 9,982,612	$ 9,879,578	$ 8,742,519
Accumulated depreciation and amortization	$ (2,251,268)	$ (1,874,054)	$ (1,565,996)	$ (1,206,017)
36 NE 2nd Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	36 NE 2nd Street
Metropolitan Area	Miami
Encumbrances	$ 0
Land, Initial costs	1,942
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	24,184
Costs capitalized subsequent to acquisition, Improvements	11,693
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,942
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	35,877
Total	37,819
Accumulated depreciation and amortization	$ (13,839)
2323 Bryan Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2323 Bryan Street
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	1,838
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	77,604
Costs capitalized subsequent to acquisition, Improvements	48,808
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,838
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	126,412
Total	128,250
Accumulated depreciation and amortization	$ (55,285)
300 Boulevard East
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	300 Boulevard East
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	5,140
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	48,526
Costs capitalized subsequent to acquisition, Improvements	61,457
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,140
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	109,983
Total	115,123
Accumulated depreciation and amortization	$ (56,085)
2334 Lundy Place
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2334 Lundy Place
Metropolitan Area	Silicon Valley
Encumbrances	$ 36,714
Land, Initial costs	3,607
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	23,008
Costs capitalized subsequent to acquisition, Improvements	67
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,607
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	23,075
Total	26,682
Accumulated depreciation and amortization	$ (9,201)
34551 Ardenwood Boulevard 1-4
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	34551 Ardenwood Boulevard 1-4
Metropolitan Area	Silicon Valley
Encumbrances	$ 50,477
Land, Initial costs	15,330
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	32,419
Costs capitalized subsequent to acquisition, Improvements	9,076
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	15,330
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	41,495
Total	56,825
Accumulated depreciation and amortization	$ (15,684)
2440 Marsh Lane
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2440 Marsh Lane
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	1,477
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	10,330
Costs capitalized subsequent to acquisition, Improvements	71,942
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,477
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	82,272
Total	83,749
Accumulated depreciation and amortization	$ (48,495)
2010 East Centennial Circle
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2010 East Centennial Circle
Metropolitan Area	Phoenix
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	1,477
Buildings and improvements, Initial costs	16,472
Costs capitalized subsequent to acquisition, Improvements	57
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	1,322
Buildings and improvements, Total costs	16,529
Total	17,851
Accumulated depreciation and amortization	$ (6,443)
375 Riverside Parkway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	375 Riverside Parkway
Metropolitan Area	Atlanta
Encumbrances	$ 0
Land, Initial costs	1,250
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	11,578
Costs capitalized subsequent to acquisition, Improvements	31,507
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,250
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	43,085
Total	44,335
Accumulated depreciation and amortization	$ (23,110)
4849 Alpha Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4849 Alpha Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,983
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	10,650
Costs capitalized subsequent to acquisition, Improvements	42,867
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,983
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	53,517
Total	56,500
Accumulated depreciation and amortization	$ (21,289)
600 West Seventh Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600 West Seventh Street
Metropolitan Area	Los Angeles
Encumbrances	$ 46,000
Land, Initial costs	18,478
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	50,824
Costs capitalized subsequent to acquisition, Improvements	55,587
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	18,478
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	106,411
Total	124,889
Accumulated depreciation and amortization	$ (53,335)
2045 & 2055 LaFayette Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2045 & 2055 LaFayette Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 61,437
Land, Initial costs	6,065
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	43,817
Costs capitalized subsequent to acquisition, Improvements	20
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	6,065
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	43,837
Total	49,902
Accumulated depreciation and amortization	$ (16,221)
11830 Webb Chapel Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	11830 Webb Chapel Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	5,881
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	34,473
Costs capitalized subsequent to acquisition, Improvements	2,102
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,881
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,575
Total	42,456
Accumulated depreciation and amortization	$ (14,300)
150 South First Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	150 South First Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 48,484
Land, Initial costs	2,068
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	29,214
Costs capitalized subsequent to acquisition, Improvements	1,495
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,068
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	30,709
Total	32,777
Accumulated depreciation and amortization	$ (10,742)
200 Paul Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	200 Paul Avenue
Metropolitan Area	San Francisco
Encumbrances	$ 0
Land, Initial costs	14,427
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	75,777
Costs capitalized subsequent to acquisition, Improvements	81,780
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	14,427
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	157,557
Total	171,984
Accumulated depreciation and amortization	$ (64,231)
1100 Space Park Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1100 Space Park Drive
Metropolitan Area	Silicon Valley
Encumbrances	$ 50,423
Land, Initial costs	5,130
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	18,206
Costs capitalized subsequent to acquisition, Improvements	34,478
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,130
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	52,684
Total	57,814
Accumulated depreciation and amortization	$ (26,014)
3015 Winona Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3015 Winona Avenue
Metropolitan Area	Los Angeles
Encumbrances	$ 0
Land, Initial costs	6,534
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	8,356
Costs capitalized subsequent to acquisition, Improvements	6
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	6,534
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	8,362
Total	14,896
Accumulated depreciation and amortization	$ (3,280)
1125 Energy Park Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1125 Energy Park Drive
Metropolitan Area	Minneapolis
Encumbrances	$ 0
Land, Initial costs	2,775
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	10,761
Costs capitalized subsequent to acquisition, Improvements	(5,701)
Costs capitalized subsequent to acquisition, Carry costs	(5,900)
Land, Total costs	2,775
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,060
Total	7,835
Accumulated depreciation and amortization	$ (3,890)
350 East Cermak Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	350 East Cermak Road
Metropolitan Area	Chicago
Encumbrances	$ 0
Land, Initial costs	8,466
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	103,232
Costs capitalized subsequent to acquisition, Improvements	225,410
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	8,620
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	328,488
Total	337,108
Accumulated depreciation and amortization	$ (164,451)
8534 Concord Center Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8534 Concord Center Drive
Metropolitan Area	Denver
Encumbrances	$ 0
Land, Initial costs	2,181
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	11,561
Costs capitalized subsequent to acquisition, Improvements	121
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,181
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,682
Total	13,863
Accumulated depreciation and amortization	$ (4,599)
2401 Walsh Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2401 Walsh Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	5,775
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	19,267
Costs capitalized subsequent to acquisition, Improvements	37
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,775
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	19,304
Total	25,079
Accumulated depreciation and amortization	$ (6,933)
2403 Walsh Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2403 Walsh Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	5,514
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	11,695
Costs capitalized subsequent to acquisition, Improvements	48
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,514
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,743
Total	17,257
Accumulated depreciation and amortization	$ (4,500)
200 North Nash Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	200 North Nash Street
Metropolitan Area	Los Angeles
Encumbrances	$ 0
Land, Initial costs	4,562
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	12,503
Costs capitalized subsequent to acquisition, Improvements	232
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	4,562
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	12,735
Total	17,297
Accumulated depreciation and amortization	$ (5,313)
731 East Trade Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	731 East Trade Street
Metropolitan Area	Charlotte
Encumbrances	$ 3,847
Land, Initial costs	1,748
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	5,727
Costs capitalized subsequent to acquisition, Improvements	249
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,748
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,976
Total	7,724
Accumulated depreciation and amortization	(2,043)
Unamortized net premiums	$ 427
113 North Myers
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	113 North Myers
Metropolitan Area	Charlotte
Encumbrances	$ 0
Land, Initial costs	1,098
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,127
Costs capitalized subsequent to acquisition, Improvements	2,059
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,098
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,186
Total	6,284
Accumulated depreciation and amortization	$ (2,013)
125 North Myers
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	125 North Myers
Metropolitan Area	Charlotte
Encumbrances	$ 0
Land, Initial costs	1,271
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,738
Costs capitalized subsequent to acquisition, Improvements	6,175
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,271
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	9,913
Total	11,184
Accumulated depreciation and amortization	$ (6,519)
Paul van Vlissingenstraat 16
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Paul van Vlissingenstraat 16
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	15,255
Costs capitalized subsequent to acquisition, Improvements	23,791
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	39,046
Total	39,046
Accumulated depreciation and amortization	$ (12,872)
600-780 S. Federal
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600-780 S. Federal
Metropolitan Area	Chicago
Encumbrances	$ 0
Land, Initial costs	7,849
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	27,881
Costs capitalized subsequent to acquisition, Improvements	33,536
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,849
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	61,417
Total	69,266
Accumulated depreciation and amortization	$ (13,488)
115 Second Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	115 Second Avenue
Metropolitan Area	Boston
Encumbrances	$ 0
Land, Initial costs	1,691
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	12,569
Costs capitalized subsequent to acquisition, Improvements	11,556
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,691
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	24,125
Total	25,816
Accumulated depreciation and amortization	$ (12,957)
Chemin de l’Epinglier 2
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Chemin de l’Epinglier 2
Metropolitan Area	Geneva
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	20,071
Costs capitalized subsequent to acquisition, Improvements	(1,584)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	18,487
Total	18,487
Accumulated depreciation and amortization	$ (6,300)
7500 Metro Center Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	7500 Metro Center Drive
Metropolitan Area	Austin
Encumbrances	$ 0
Land, Initial costs	1,177
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,877
Costs capitalized subsequent to acquisition, Improvements	67,500
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,177
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	72,377
Total	73,554
Accumulated depreciation and amortization	$ (5,775)
3 Corporate Place
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3 Corporate Place
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	2,124
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	12,678
Costs capitalized subsequent to acquisition, Improvements	127,334
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,124
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	140,012
Total	142,136
Accumulated depreciation and amortization	$ (67,989)
4025 Midway Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4025 Midway Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,196
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	14,037
Costs capitalized subsequent to acquisition, Improvements	28,627
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,196
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	42,664
Total	44,860
Accumulated depreciation and amortization	$ (24,747)
Clonshaugh Industrial Estate
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Clonshaugh Industrial Estate
Metropolitan Area	Dublin
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	1,444
Buildings and improvements, Initial costs	5,569
Costs capitalized subsequent to acquisition, Improvements	2,625
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	90
Buildings and improvements, Total costs	8,194
Total	8,284
Accumulated depreciation and amortization	$ (4,793)
6800 Millcreek Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	6800 Millcreek Drive
Metropolitan Area	Toronto
Encumbrances	$ 0
Land, Initial costs	1,657
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	11,352
Costs capitalized subsequent to acquisition, Improvements	2,279
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,657
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	13,631
Total	15,288
Accumulated depreciation and amortization	$ (5,337)
101 Aquila Way
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	101 Aquila Way
Metropolitan Area	Atlanta
Encumbrances	$ 0
Land, Initial costs	1,480
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	34,797
Costs capitalized subsequent to acquisition, Improvements	52
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,480
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	34,849
Total	36,329
Accumulated depreciation and amortization	$ (11,827)
12001 North Freeway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	12001 North Freeway
Metropolitan Area	Houston
Encumbrances	$ 0
Land, Initial costs	6,965
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	23,492
Costs capitalized subsequent to acquisition, Improvements	145,311
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	6,965
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	168,803
Total	175,768
Accumulated depreciation and amortization	$ (34,400)
120 E Van Buren
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	120 E Van Buren
Metropolitan Area	Phoenix
Encumbrances	$ 0
Land, Initial costs	4,524
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	157,822
Costs capitalized subsequent to acquisition, Improvements	106,684
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	4,524
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	264,506
Total	269,030
Accumulated depreciation and amortization	$ (101,945)
Gyroscoopweg 2E-2F
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Gyroscoopweg 2E-2F
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	13,450
Costs capitalized subsequent to acquisition, Improvements	(2,011)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,439
Total	11,439
Accumulated depreciation and amortization	$ (3,978)
Clonshaugh Industrial Estate II
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Clonshaugh Industrial Estate II
Metropolitan Area	Dublin
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	75,735
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	75,735
Total	75,735
Accumulated depreciation and amortization	$ (32,367)
600 Winter Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600 Winter Street
Metropolitan Area	Boston
Encumbrances	$ 0
Land, Initial costs	1,429
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	6,228
Costs capitalized subsequent to acquisition, Improvements	456
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,429
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,684
Total	8,113
Accumulated depreciation and amortization	$ (1,898)
2300 NW 89th Place
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2300 NW 89th Place
Metropolitan Area	Miami
Encumbrances	$ 0
Land, Initial costs	1,022
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,767
Costs capitalized subsequent to acquisition, Improvements	19
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,022
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,786
Total	4,808
Accumulated depreciation and amortization	$ (1,450)
2055 East Technology Circle
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2055 East Technology Circle
Metropolitan Area	Phoenix
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	8,519
Costs capitalized subsequent to acquisition, Improvements	27,522
Costs capitalized subsequent to acquisition, Carry costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,041
Total	36,041
Accumulated depreciation and amortization	$ (21,882)
114 Rue Ambroise Croizat
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	114 Rue Ambroise Croizat
Metropolitan Area	Paris
Encumbrances	$ 0
Land, Initial costs	12,261
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	34,051
Costs capitalized subsequent to acquisition, Improvements	65,181
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	9,533
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	101,960
Total	111,493
Accumulated depreciation and amortization	$ (39,419)
Unit 9, Blanchardstown Corporate Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Unit 9, Blanchardstown Corporate Park
Metropolitan Area	Dublin
Encumbrances	$ 0
Land, Initial costs	1,927
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	40,024
Costs capitalized subsequent to acquisition, Improvements	14,850
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,573
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	55,228
Total	56,801
Accumulated depreciation and amortization	$ (17,215)
111 8th Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	111 8th Avenue
Metropolitan Area	New York
Encumbrances	$ 0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	17,688
Costs capitalized subsequent to acquisition, Improvements	16,993
Costs capitalized subsequent to acquisition, Carry costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	34,681
Total	34,681
Accumulated depreciation and amortization	$ (27,068)
8100 Boone Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8100 Boone Boulevard
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	158
Costs capitalized subsequent to acquisition, Improvements	1,206
Costs capitalized subsequent to acquisition, Carry costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	1,364
Total	1,364
Accumulated depreciation and amortization	$ (1,119)
21110 Ridgetop Circle
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	21110 Ridgetop Circle
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	2,934
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	14,311
Costs capitalized subsequent to acquisition, Improvements	1,307
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,934
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	15,618
Total	18,552
Accumulated depreciation and amortization	$ (4,756)
3011 Lafayette Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3011 Lafayette Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	3,354
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	10,305
Costs capitalized subsequent to acquisition, Improvements	49,187
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,354
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	59,492
Total	62,846
Accumulated depreciation and amortization	$ (40,001)
44470 Chilum Place
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	44470 Chilum Place
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,531
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	37,360
Costs capitalized subsequent to acquisition, Improvements	1
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,531
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	37,361
Total	40,892
Accumulated depreciation and amortization	$ (9,065)
43881 Devin Shafron Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43881 Devin Shafron Drive
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	4,653
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	23,631
Costs capitalized subsequent to acquisition, Improvements	91,427
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	4,653
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	115,058
Total	119,711
Accumulated depreciation and amortization	$ (71,066)
43831 Devin Shafron Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43831 Devin Shafron Drive
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,027
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	16,247
Costs capitalized subsequent to acquisition, Improvements	1,229
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,027
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,476
Total	20,503
Accumulated depreciation and amortization	$ (4,541)
43791 Devin Shafron Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43791 Devin Shafron Drive
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,490
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	17,444
Costs capitalized subsequent to acquisition, Improvements	77,073
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,490
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	94,517
Total	98,007
Accumulated depreciation and amortization	$ (38,282)
Mundells Roundabout
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Mundells Roundabout
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	31,354
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	53,426
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	23,489
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	61,291
Total	84,780
Accumulated depreciation and amortization	$ (11,536)
1 Savvis Parkway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1 Savvis Parkway
Metropolitan Area	St. Louis
Encumbrances	$ 0
Land, Initial costs	3,301
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	20,639
Costs capitalized subsequent to acquisition, Improvements	1,125
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,301
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	21,764
Total	25,065
Accumulated depreciation and amortization	$ (5,553)
1500 Space Park Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1500 Space Park Drive
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	6,732
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	6,325
Costs capitalized subsequent to acquisition, Improvements	46,078
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	4,106
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	55,029
Total	59,135
Accumulated depreciation and amortization	$ (40,103)
Cressex 1
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Cressex 1
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	3,629
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	9,036
Costs capitalized subsequent to acquisition, Improvements	23,810
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,833
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	33,642
Total	36,475
Accumulated depreciation and amortization	$ (16,677)
Naritaweg 52
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Naritaweg 52
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	1,192
Buildings and improvements, Initial costs	23,441
Costs capitalized subsequent to acquisition, Improvements	(5,812)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	888
Buildings and improvements, Total costs	17,629
Total	18,517
Accumulated depreciation and amortization	$ (4,319)
1 St. Anne’s Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1 St. Anne’s Boulevard
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	1,490
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	1,045
Costs capitalized subsequent to acquisition, Improvements	(534)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,128
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	873
Total	2,001
Accumulated depreciation and amortization	$ (178)
2 St. Anne’s Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2 St. Anne’s Boulevard
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	922
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	695
Costs capitalized subsequent to acquisition, Improvements	37,874
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	751
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	38,740
Total	39,491
Accumulated depreciation and amortization	$ (4,255)
3 St. Anne’s Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3 St. Anne’s Boulevard
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	22,079
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	16,351
Costs capitalized subsequent to acquisition, Improvements	96,759
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	16,563
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	118,626
Total	135,189
Accumulated depreciation and amortization	$ (42,834)
365 South Randolphville Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	365 South Randolphville Road
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	3,019
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	17,404
Costs capitalized subsequent to acquisition, Improvements	275,759
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,019
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	293,163
Total	296,182
Accumulated depreciation and amortization	$ (69,056)
701 & 717 Leonard Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	701 & 717 Leonard Street
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,165
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	9,934
Costs capitalized subsequent to acquisition, Improvements	826
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,165
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	10,760
Total	12,925
Accumulated depreciation and amortization	$ (2,204)
Manchester Technopark
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Manchester Technopark
Metropolitan Area	Manchester
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	23,918
Costs capitalized subsequent to acquisition, Improvements	(5,802)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	18,116
Total	18,116
Accumulated depreciation and amortization	$ (3,919)
1201 Comstock Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1201 Comstock Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	2,093
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	1,606
Costs capitalized subsequent to acquisition, Improvements	26,684
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,398
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	26,985
Total	30,383
Accumulated depreciation and amortization	$ (14,210)
1550 Space Park Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1550 Space Park Drive
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	2,301
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	766
Costs capitalized subsequent to acquisition, Improvements	1,747
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,929
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,885
Total	4,814
Accumulated depreciation and amortization	$ 0
1525 Comstock Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1525 Comstock Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	2,293
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	16,216
Costs capitalized subsequent to acquisition, Improvements	30,616
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,061
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	47,064
Total	49,125
Accumulated depreciation and amortization	$ (23,287)
43830 Devin Shafron Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	43830 Devin Shafron Drive
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	5,509
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	73,468
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,509
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	73,468
Total	78,977
Accumulated depreciation and amortization	$ (23,394)
1232 Alma Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1232 Alma Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,267
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,740
Costs capitalized subsequent to acquisition, Improvements	63,830
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,266
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	67,571
Total	69,837
Accumulated depreciation and amortization	$ (26,467)
900 Quality Way
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	900 Quality Way
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	1,446
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	1,659
Costs capitalized subsequent to acquisition, Improvements	69,165
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,446
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	70,824
Total	72,270
Accumulated depreciation and amortization	$ (10,008)
1400 N. Bowser Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1400 N. Bowser Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,041
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,389
Costs capitalized subsequent to acquisition, Improvements	6,181
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,636
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	7,975
Total	11,611
Accumulated depreciation and amortization	$ 0
1301 International Parkway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1301 International Parkway
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	333
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	344
Costs capitalized subsequent to acquisition, Improvements	76,746
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,131
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	75,292
Total	77,423
Accumulated depreciation and amortization	$ (238)
908 Quality Way
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	908 Quality Way
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	6,730
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,493
Costs capitalized subsequent to acquisition, Improvements	13,693
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,067
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	22,849
Total	24,916
Accumulated depreciation and amortization	$ (13,011)
904 Quality Way
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	904 Quality Way
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	760
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	744
Costs capitalized subsequent to acquisition, Improvements	6,814
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,151
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	7,167
Total	8,318
Accumulated depreciation and amortization	$ (624)
905 Security Row
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	905 Security Row
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	0
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	0
Total	0
Accumulated depreciation and amortization	$ 0
1202 Alma Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1202 Alma Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	44,349
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,921
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	42,428
Total	44,349
Accumulated depreciation and amortization	$ (8,715)
1350 Duane
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1350 Duane
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	7,081
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	69,817
Costs capitalized subsequent to acquisition, Improvements	61
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,081
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	69,878
Total	76,959
Accumulated depreciation and amortization	$ (11,175)
45901 & 45845 Nokes Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	45901 & 45845 Nokes Boulevard
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,437
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	28,785
Costs capitalized subsequent to acquisition, Improvements	450
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,437
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	29,235
Total	32,672
Accumulated depreciation and amortization	$ (4,913)
21561 & 21571 Beaumeade Circle
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	21561 & 21571 Beaumeade Circle
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,966
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	24,211
Costs capitalized subsequent to acquisition, Improvements	45
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,966
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	24,256
Total	28,222
Accumulated depreciation and amortization	$ (3,767)
60 & 80 Merritt
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	60 & 80 Merritt
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	3,418
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	71,477
Costs capitalized subsequent to acquisition, Improvements	92,311
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,418
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	163,788
Total	167,206
Accumulated depreciation and amortization	$ (22,425)
55 Middlesex
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	55 Middlesex
Metropolitan Area	Boston
Encumbrances	$ 0
Land, Initial costs	9,975
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	68,363
Costs capitalized subsequent to acquisition, Improvements	8,170
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	9,975
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	76,533
Total	86,508
Accumulated depreciation and amortization	$ (15,970)
128 First Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	128 First Avenue
Metropolitan Area	Boston
Encumbrances	$ 0
Land, Initial costs	5,465
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	185,348
Costs capitalized subsequent to acquisition, Improvements	30,328
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,465
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	215,676
Total	221,141
Accumulated depreciation and amortization	$ (44,598)
Cateringweg 5
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Cateringweg 5
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	3,518
Buildings and improvements, Initial costs	3,517
Costs capitalized subsequent to acquisition, Improvements	37,032
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	3,122
Buildings and improvements, Total costs	40,549
Total	43,671
Accumulated depreciation and amortization	$ (4,959)
1725 Comstock Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1725 Comstock Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	3,274
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	6,567
Costs capitalized subsequent to acquisition, Improvements	37,900
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,274
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	44,467
Total	47,741
Accumulated depreciation and amortization	$ (15,944)
3015 and 3115 Alfred Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3015 and 3115 Alfred Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	6,533
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,725
Costs capitalized subsequent to acquisition, Improvements	55,645
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	6,562
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	59,341
Total	65,903
Accumulated depreciation and amortization	$ (17,930)
365 Main Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	365 Main Street
Metropolitan Area	San Francisco
Encumbrances	$ 0
Land, Initial costs	22,854
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	158,709
Costs capitalized subsequent to acquisition, Improvements	22,737
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	22,854
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	181,446
Total	204,300
Accumulated depreciation and amortization	$ (32,439)
720 2nd Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	720 2nd Street
Metropolitan Area	San Francisco
Encumbrances	$ 0
Land, Initial costs	3,884
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	116,861
Costs capitalized subsequent to acquisition, Improvements	9,594
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,884
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	126,455
Total	130,339
Accumulated depreciation and amortization	$ (20,522)
2260 East El Segundo
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2260 East El Segundo
Metropolitan Area	Los Angeles
Encumbrances	$ 0
Land, Initial costs	11,053
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	51,397
Costs capitalized subsequent to acquisition, Improvements	13,205
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	11,053
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	64,602
Total	75,655
Accumulated depreciation and amortization	$ (12,276)
2121 South Price Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2121 South Price Road
Metropolitan Area	Phoenix
Encumbrances	$ 0
Land, Initial costs	7,335
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	238,452
Costs capitalized subsequent to acquisition, Improvements	199,624
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,335
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	438,076
Total	445,411
Accumulated depreciation and amortization	$ (67,279)
4030 La Fayette
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4030 La Fayette
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	2,492
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	16,912
Costs capitalized subsequent to acquisition, Improvements	3,517
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,492
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	20,429
Total	22,921
Accumulated depreciation and amortization	$ (3,788)
4040 La Fayette
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4040 La Fayette
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	1,246
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,267
Costs capitalized subsequent to acquisition, Improvements	24,510
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,246
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	28,777
Total	30,023
Accumulated depreciation and amortization	$ (1,773)
4050 La Fayette
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	4050 La Fayette
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	1,246
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,371
Costs capitalized subsequent to acquisition, Improvements	35,017
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,246
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	39,388
Total	40,634
Accumulated depreciation and amortization	$ (13,601)
800 Central Expressway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	800 Central Expressway
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	8,976
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	18,155
Costs capitalized subsequent to acquisition, Improvements	130,755
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	8,294
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	149,592
Total	157,886
Accumulated depreciation and amortization	$ (10,502)
29A International Business Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	29A International Business Park
Metropolitan Area	Singapore
Encumbrances	$ 0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	137,545
Costs capitalized subsequent to acquisition, Improvements	190,975
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	328,520
Total	328,520
Accumulated depreciation and amortization	$ (56,103)
Loudoun Parkway North
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Loudoun Parkway North
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	17,300
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	495,564
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	17,746
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	495,118
Total	512,864
Accumulated depreciation and amortization	$ (32,184)
1-23 Templar Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1-23 Templar Road
Metropolitan Area	Sydney
Encumbrances	$ 0
Land, Initial costs	11,173
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	62,906
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,181
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	66,898
Total	74,079
Accumulated depreciation and amortization	$ (6,681)
Fountain Court
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Fountain Court
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	7,544
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	12,506
Costs capitalized subsequent to acquisition, Improvements	95,637
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,217
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	108,470
Total	115,687
Accumulated depreciation and amortization	$ (9,995)
98 Radnor Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	98 Radnor Drive
Metropolitan Area	Melbourne
Encumbrances	$ 0
Land, Initial costs	4,467
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	91,340
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,215
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	92,592
Total	95,807
Accumulated depreciation and amortization	$ (10,456)
Cabot Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Cabot Street
Metropolitan Area	Boston
Encumbrances	$ 0
Land, Initial costs	2,386
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	58,806
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,427
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	58,765
Total	61,192
Accumulated depreciation and amortization	$ (3,634)
3825 NW Aloclek Place
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3825 NW Aloclek Place
Metropolitan Area	Portland
Encumbrances	$ 0
Land, Initial costs	1,689
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	57,201
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,689
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	57,201
Total	58,890
Accumulated depreciation and amortization	$ (10,724)
11085 Sun Center Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	11085 Sun Center Drive
Metropolitan Area	Sacramento
Encumbrances	$ 0
Land, Initial costs	2,490
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	21,509
Costs capitalized subsequent to acquisition, Improvements	1
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,490
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	21,510
Total	24,000
Accumulated depreciation and amortization	$ (2,633)
Profile Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Profile Park
Metropolitan Area	Dublin
Encumbrances	$ 0
Land, Initial costs	6,288
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	38,565
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,350
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	39,503
Total	44,853
Accumulated depreciation and amortization	$ (530)
1506 Moran Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1506 Moran Road
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	1,527
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	17,185
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,115
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,597
Total	18,712
Accumulated depreciation and amortization	$ (1,348)
760 Doug Davis Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	760 Doug Davis Drive
Metropolitan Area	Atlanta
Encumbrances	$ 0
Land, Initial costs	4,837
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	53,551
Costs capitalized subsequent to acquisition, Improvements	2,807
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	4,837
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	56,358
Total	61,195
Accumulated depreciation and amortization	$ (7,712)
360 Spear Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	360 Spear Street
Metropolitan Area	San Francisco
Encumbrances	$ 0
Land, Initial costs	19,828
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	56,733
Costs capitalized subsequent to acquisition, Improvements	(854)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	19,828
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	55,879
Total	75,707
Accumulated depreciation and amortization	$ (8,397)
2501 S. State Hwy 121
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2501 S. State Hwy 121
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	23,137
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	93,943
Costs capitalized subsequent to acquisition, Improvements	14,828
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	23,137
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	108,771
Total	131,908
Accumulated depreciation and amortization	$ (17,611)
9333, 9355, 9377 Grand Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	9333, 9355, 9377 Grand Avenue
Metropolitan Area	Chicago
Encumbrances	$ 0
Land, Initial costs	5,686
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	14,515
Costs capitalized subsequent to acquisition, Improvements	259,630
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,960
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	273,871
Total	279,831
Accumulated depreciation and amortization	$ (17,681)
8025 North Interstate 35
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8025 North Interstate 35
Metropolitan Area	Austin
Encumbrances	$ 5,801
Land, Initial costs	2,920
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	8,512
Costs capitalized subsequent to acquisition, Improvements	184
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,920
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	8,696
Total	11,616
Accumulated depreciation and amortization	(1,095)
Unamortized net premiums	$ 12
850 E Collins
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	850 E Collins
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	1,614
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	81,875
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,614
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	81,875
Total	83,489
Accumulated depreciation and amortization	$ (6,925)
950 E Collins
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	950 E Collins
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	1,546
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	74,994
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,546
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	74,994
Total	76,540
Accumulated depreciation and amortization	$ (3,621)
400 S. Akard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	400 S. Akard
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	10,075
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	62,730
Costs capitalized subsequent to acquisition, Improvements	1,690
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	10,075
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	64,420
Total	74,495
Accumulated depreciation and amortization	$ (6,066)
410 Commerce Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	410 Commerce Boulevard
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	29,747
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	29,747
Total	29,747
Accumulated depreciation and amortization	$ (5,625)
Unit B Prologis Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Unit B Prologis Park
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	1,683
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	104,728
Costs capitalized subsequent to acquisition, Improvements	(6,565)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,552
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	98,294
Total	99,846
Accumulated depreciation and amortization	$ (9,903)
The Chess Building
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	The Chess Building
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	7,355
Buildings and improvements, Initial costs	219,273
Costs capitalized subsequent to acquisition, Improvements	9,773
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	7,217
Buildings and improvements, Total costs	229,046
Total	236,263
Accumulated depreciation and amortization	$ (22,462)
Unit 21 Goldsworth Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Unit 21 Goldsworth Park
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	17,334
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	928,129
Costs capitalized subsequent to acquisition, Improvements	(26,882)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	15,800
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	902,781
Total	918,581
Accumulated depreciation and amortization	$ (89,393)
11900 East Cornell
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	11900 East Cornell
Metropolitan Area	Denver
Encumbrances	$ 0
Land, Initial costs	3,352
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	80,640
Costs capitalized subsequent to acquisition, Improvements	1,758
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,352
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	82,398
Total	85,750
Accumulated depreciation and amortization	$ (8,837)
701 Union Boulevard
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	701 Union Boulevard
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	10,045
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	6,755
Costs capitalized subsequent to acquisition, Improvements	27,878
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	10,045
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	34,633
Total	44,678
Accumulated depreciation and amortization	$ 0
23 Waterloo Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	23 Waterloo Road
Metropolitan Area	Sydney
Encumbrances	$ 0
Land, Initial costs	7,112
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,868
Costs capitalized subsequent to acquisition, Improvements	(3,284)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	4,985
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,711
Total	7,696
Accumulated depreciation and amortization	$ (244)
1 Rue Jean-Pierre
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1 Rue Jean-Pierre
Metropolitan Area	Paris
Encumbrances	$ 0
Land, Initial costs	9,621
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	35,825
Costs capitalized subsequent to acquisition, Improvements	(8,029)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,921
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	29,496
Total	37,417
Accumulated depreciation and amortization	$ (3,209)
Liet-dit le Christ de Saclay
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Liet-dit le Christ de Saclay
Metropolitan Area	Paris
Encumbrances	$ 0
Land, Initial costs	3,402
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,090
Costs capitalized subsequent to acquisition, Improvements	(1,147)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,801
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,544
Total	5,345
Accumulated depreciation and amortization	$ (357)
127 Rue de Paris
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	127 Rue de Paris
Metropolitan Area	Paris
Encumbrances	$ 0
Land, Initial costs	8,637
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	10,838
Costs capitalized subsequent to acquisition, Improvements	(3,441)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	7,111
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	8,923
Total	16,034
Accumulated depreciation and amortization	$ (1,208)
17201 Waterview Parkway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	17201 Waterview Parkway
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,070
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	6,409
Costs capitalized subsequent to acquisition, Improvements	(1)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	2,070
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,408
Total	8,478
Accumulated depreciation and amortization	$ (615)
1900 S. Price Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1900 S. Price Road
Metropolitan Area	Phoenix
Encumbrances	$ 0
Land, Initial costs	5,380
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	16,975
Costs capitalized subsequent to acquisition, Improvements	320
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,380
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,295
Total	22,675
Accumulated depreciation and amortization	$ (1,609)
371 Gough Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	371 Gough Road
Metropolitan Area	Toronto
Encumbrances	$ 0
Land, Initial costs	7,394
Buildings and improvements, Initial costs	677
Costs capitalized subsequent to acquisition, Improvements	67,316
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	5,700
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	69,687
Total	75,387
Accumulated depreciation and amortization	$ (2,126)
1500 Towerview Road
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1500 Towerview Road
Metropolitan Area	Minneapolis
Encumbrances	$ 0
Land, Initial costs	10,190
Buildings and improvements, Initial costs	20,054
Costs capitalized subsequent to acquisition, Improvements	3,168
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	10,190
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	23,222
Total	33,412
Accumulated depreciation and amortization	$ (2,124)
Principal Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Principal Park
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	11,837
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	114,293
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	13,886
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	112,244
Total	126,130
Accumulated depreciation and amortization	$ (1,991)
MetCenter Business Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	MetCenter Business Park
Metropolitan Area	Austin
Encumbrances	$ 0
Land, Initial costs	8,604
Buildings and improvements, Initial costs	20,314
Costs capitalized subsequent to acquisition, Improvements	364
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	8,604
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	20,678
Total	29,282
Accumulated depreciation and amortization	$ (2,208)
Liverpoolweg 10
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Liverpoolweg 10
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	733
Buildings and improvements, Initial costs	3,122
Costs capitalized subsequent to acquisition, Improvements	7,085
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	611
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	10,329
Total	10,940
Accumulated depreciation and amortization	$ (775)
DePresident
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	DePresident
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	6,737
Costs capitalized subsequent to acquisition, Improvements	6,354
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	6,774
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,317
Total	13,091
Accumulated depreciation and amortization	$ 0
Saito Industrial Park
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Saito Industrial Park
Metropolitan Area	Osaka
Encumbrances	$ 0
Land, Initial costs	9,649
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	1,744
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	8,321
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,072
Total	11,393
Accumulated depreciation and amortization	$ 0
Crawley 2
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Crawley 2
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	24,305
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	1,741
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	22,020
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	4,026
Total	26,046
Accumulated depreciation and amortization	$ (97)
Digital Deer Park 3
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Digital Deer Park 3
Metropolitan Area	Melbourne
Encumbrances	$ 0
Land, Initial costs	1,600
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	29
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,629
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	0
Total	1,629
Accumulated depreciation and amortization	$ 0
Digital Deer Park 3
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3 Loyang Way
Metropolitan Area	Singapore
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	77,190
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	77,190
Total	77,190
Accumulated depreciation and amortization	$ 0
Digital Loudoun 3
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Digital Loudoun 3
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	43,000
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	1,445
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	44,155
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	290
Total	44,445
Accumulated depreciation and amortization	$ (10)
Digital Frankfurt
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Digital Frankfurt
Metropolitan Area	Frankfurt
Encumbrances	$ 0
Land, Initial costs	5,543
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	1,121
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	6,664
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	0
Total	6,664
Accumulated depreciation and amortization	$ 0
56 Marietta Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	56 Marietta Street
Metropolitan Area	Atlanta
Encumbrances	$ 0
Land, Initial costs	1,700
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	211,397
Costs capitalized subsequent to acquisition, Improvements	1,116
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	1,700
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	212,513
Total	214,213
Accumulated depreciation and amortization	$ (2,136)
2 Peekay Drive
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2 Peekay Drive
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	115,439
Costs capitalized subsequent to acquisition, Improvements	3,102
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	118,541
Total	118,541
Accumulated depreciation and amortization	$ (1,575)
100 Delawanna Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	100 Delawanna Avenue
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	3,600
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	85,438
Costs capitalized subsequent to acquisition, Improvements	682
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	3,600
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	86,120
Total	89,720
Accumulated depreciation and amortization	$ (742)
60 Hudson Street
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	60 Hudson Street
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	32,280
Costs capitalized subsequent to acquisition, Improvements	945
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	33,225
Total	33,225
Accumulated depreciation and amortization	$ (715)
32 Avenue of the Americas
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	32 Avenue of the Americas
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	30,980
Costs capitalized subsequent to acquisition, Improvements	465
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	31,445
Total	31,445
Accumulated depreciation and amortization	$ (514)
3433 S 120th Place
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3433 S 120th Place
Metropolitan Area	Seattle
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	11,688
Costs capitalized subsequent to acquisition, Improvements	240
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,928
Total	11,928
Accumulated depreciation and amortization	$ (359)
8435 Stemmons Freeway
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	8435 Stemmons Freeway
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	5,023
Costs capitalized subsequent to acquisition, Improvements	121
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,144
Total	5,144
Accumulated depreciation and amortization	$ (148)
2625 Walsh Avenue
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2625 Walsh Avenue
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,276
Costs capitalized subsequent to acquisition, Improvements	536
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	4,812
Total	4,812
Accumulated depreciation and amortization	$ (72)
111 8th Avenue - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	111 8th Avenue - Telx
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	42,454
Costs capitalized subsequent to acquisition, Improvements	818
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	43,272
Total	43,272
Accumulated depreciation and amortization	$ (1,084)
350 East Cermak Road - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	350 East Cermak Road - Telx
Metropolitan Area	Chicago
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	13,933
Costs capitalized subsequent to acquisition, Improvements	405
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	14,338
Total	14,338
Accumulated depreciation and amortization	$ (303)
200 Paul Avenue - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	200 Paul Avenue - Telx
Metropolitan Area	San Francisco
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	6,719
Costs capitalized subsequent to acquisition, Improvements	243
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,962
Total	6,962
Accumulated depreciation and amortization	$ (142)
2323 Bryan Street - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	2323 Bryan Street - Telx
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	5,191
Costs capitalized subsequent to acquisition, Improvements	157
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,348
Total	5,348
Accumulated depreciation and amortization	$ (108)
600 W. 7th Street - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600 W. 7th Street - Telx
Metropolitan Area	Los Angeles
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,689
Costs capitalized subsequent to acquisition, Improvements	101
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,790
Total	3,790
Accumulated depreciation and amortization	$ (89)
3825 NW Aloclek Place - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	3825 NW Aloclek Place - Telx
Metropolitan Area	Portland
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,131
Costs capitalized subsequent to acquisition, Improvements	137
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,268
Total	3,268
Accumulated depreciation and amortization	$ (39)
120 E. Van Buren Street - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	120 E. Van Buren Street - Telx
Metropolitan Area	Phoenix
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	2,848
Costs capitalized subsequent to acquisition, Improvements	(351)
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,497
Total	2,497
Accumulated depreciation and amortization	$ (53)
36 NE 2nd Street - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	36 NE 2nd Street - Telx
Metropolitan Area	Miami
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	1,842
Costs capitalized subsequent to acquisition, Improvements	36
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	1,878
Total	1,878
Accumulated depreciation and amortization	$ (42)
600-780 S. Federal Street - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	600-780 S. Federal Street - Telx
Metropolitan Area	Chicago
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	1,815
Costs capitalized subsequent to acquisition, Improvements	30
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	1,845
Total	1,845
Accumulated depreciation and amortization	$ (39)
113 N. Myers Street - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	113 N. Myers Street - Telx
Metropolitan Area	Charlotte
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	476
Costs capitalized subsequent to acquisition, Improvements	27
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	503
Total	503
Accumulated depreciation and amortization	$ (7)
1100 Space Park Drive - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	1100 Space Park Drive - Telx
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	352
Costs capitalized subsequent to acquisition, Improvements	11
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	363
Total	363
Accumulated depreciation and amortization	$ (10)
300 Boulevard East - Telx
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	300 Boulevard East - Telx
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	197
Costs capitalized subsequent to acquisition, Improvements	19
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	216
Total	216
Accumulated depreciation and amortization	$ (5)
Other
Real Estate and Accumulated Depreciation [Line Items]
PROPERTIES:	Other
Encumbrances	$ 0
Land, Initial costs	8,298
Buildings and improvements, Initial costs	0
Costs capitalized subsequent to acquisition, Improvements	14,839
Costs capitalized subsequent to acquisition, Carry costs	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	23,137
Total	23,137
Accumulated depreciation and amortization	$ (8,096)

Schedule III Properties And 115

Schedule III Properties And Accumulated Depreciation (Narrative) (Details) $ in Billions	Dec. 31, 2015USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Aggregate gross cost of properties for federal income tax purposes	$ 11.7

Schedule III Properties And 116

Schedule III Properties And Accumulated Depreciation (Summary Of Historical Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, beginning of year	$ 9,982,612	$ 9,879,578	$ 8,742,519
Additions during period (acquisitions and improvements)	1,133,263	560,307	1,345,046
Deductions during period (dispositions, impairments and assets held for sale)	(200,502)	(457,273)	(207,987)
Balance, end of year	$ 10,915,373	$ 9,982,612	$ 9,879,578

Schedule III Properties And 117

Schedule III Properties And Accumulated Depreciation (Summary Of Accumulated Depreciation And Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of year	$ 1,874,054	$ 1,565,996	$ 1,206,017
Additions during period (depreciation and amortization expense)	429,057	413,652	386,935
Deductions during period (dispositions and assets held for sale)	(51,843)	(105,594)	(26,956)
Balance, end of year	$ 2,251,268	$ 1,874,054	$ 1,565,996