Digital Realty Trust (DLR) 10-K 1 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Feb. 23, 2017	Jun. 30, 2016
Statement [Line Items]
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
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
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		159,267,316
Entity Public Float			$ 16,000,000,000
Entity Well-known Seasoned Issuer	Yes
Digital Realty Trust, L.P.
Statement [Line Items]
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
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
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0
Entity Public Float			$ 0
Entity Well-known Seasoned Issuer	No

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Properties:
Land	$ 746,822	$ 689,573
Acquired ground leases	11,335	12,639
Buildings and improvements	10,267,525	9,676,427
Tenant improvements	532,787	536,734
Total investments in properties	11,558,469	10,915,373
Accumulated depreciation and amortization	(2,668,509)	(2,251,268)
Net investments in properties	8,889,960	8,664,105
Investment in unconsolidated joint ventures	106,402	106,107
Net investments in real estate	8,996,362	8,770,212
Cash and cash equivalents	10,528	57,053
Accounts and other receivables, net of allowance for doubtful accounts of $7,446 and $5,844 as of December 31, 2016 and December 31, 2015, respectively	203,938	177,398
Deferred rent	412,269	403,327
Acquired above-market leases, net of accumulated amortization of $87,961 and $89,613 as of December 31, 2016 and December 31, 2015, respectively	22,181	32,698
Goodwill	752,970	330,664
Acquired in-place lease value, deferred leasing costs and intangibles, net of accumulated amortization of $772,443 and $621,132	1,522,378	1,391,659
Restricted cash	11,508	18,009
Assets held for sale	56,097	180,139
Other assets	204,354	54,904
Total assets	12,192,585	11,416,063
LIABILITIES AND EQUITY
Unsecured senior notes, net of discount	4,153,797	3,712,569
Mortgage loans, including premiums	3,240	302,930
Accounts payable and other accrued liabilities	824,878	608,343
Accrued dividends and distributions	144,194	126,925
Acquired below-market leases, net of accumulated amortization of $202,000 and $193,677 as of December 31, 2016 and December 31, 2015, respectively	81,899	101,114
Security deposits and prepaid rents	168,111	138,347
Obligations associated with assets held for sale	2,599	5,795
Total liabilities	7,060,288	6,879,561
Commitments and contingencies
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Common Stock: $0.01 par value, 265,000,000 shares authorized as of December 31, 2016 and 215,000,000 shares authorized as of December 31, 2015, 159,019,118 and 146,384,247 shares issued and outstanding as of December 31, 2016 and December 31, 2015, respectively	1,582	1,456
Additional paid-in capital	5,764,497	4,655,220
Accumulated dividends in excess of earnings	(1,547,420)	(1,350,089)
Accumulated other comprehensive loss, net	(135,605)	(96,590)
Total stockholders’ equity	5,096,015	4,500,132
Noncontrolling Interests:
Noncontrolling interests in operating partnership	29,684	29,612
Noncontrolling interests in consolidated joint ventures	6,598	6,758
Total noncontrolling interests	36,282	36,370
Total equity	5,132,297	4,536,502
Total liabilities and equity	12,192,585	11,416,063
Digital Realty Trust, L.P.
Properties:
Land	746,822	689,573
Acquired ground leases	11,335	12,639
Buildings and improvements	10,267,525	9,676,427
Tenant improvements	532,787	536,734
Total investments in properties	11,558,469	10,915,373
Accumulated depreciation and amortization	(2,668,509)	(2,251,268)
Net investments in properties	8,889,960	8,664,105
Investment in unconsolidated joint ventures	106,402	106,107
Net investments in real estate	8,996,362	8,770,212
Cash and cash equivalents	10,528	57,053
Accounts and other receivables, net of allowance for doubtful accounts of $7,446 and $5,844 as of December 31, 2016 and December 31, 2015, respectively	203,938	177,398
Deferred rent	412,269	403,327
Acquired above-market leases, net of accumulated amortization of $87,961 and $89,613 as of December 31, 2016 and December 31, 2015, respectively	22,181	32,698
Goodwill	752,970	330,664
Acquired in-place lease value, deferred leasing costs and intangibles, net of accumulated amortization of $772,443 and $621,132	1,522,378	1,391,659
Restricted cash	11,508	18,009
Assets held for sale	56,097	180,139
Other assets	204,354	54,904
Total assets	12,192,585	11,416,063
LIABILITIES AND EQUITY
Unsecured senior notes, net of discount	4,153,797	3,712,569
Mortgage loans, including premiums	3,240	302,930
Accounts payable and other accrued liabilities	824,878	609,708
Accrued dividends and distributions	144,194	126,925
Acquired below-market leases, net of accumulated amortization of $202,000 and $193,677 as of December 31, 2016 and December 31, 2015, respectively	81,899	101,114
Security deposits and prepaid rents	168,111	138,347
Obligations associated with assets held for sale	2,599	5,795
Total liabilities	7,060,288	6,880,926
Commitments and contingencies
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Common units: 146,384,247 and 135,626,255 units issued and outstanding as of December 31, 2015 and December 31, 2014, respectively	4,218,659	3,305,222
Limited partners, 1,141,814 and 1,421,314 common units, 995,265 and 1,032,775 profits interest units and 338,584 and 379,237 class C units outstanding as of December 31, 2016 and December 31, 2015, respectively	34,698	33,986
Accumulated other comprehensive loss, net	(140,619)	(100,964)
Total partners’ capital	5,125,699	4,528,379
Noncontrolling Interests:
Noncontrolling interests in consolidated joint ventures	6,598	6,758
Total capital	5,132,297	4,535,137
Total liabilities and equity	12,192,585	11,416,063
Series E Cumulative Redeemable Preferred Stock
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	0	277,172
Series E Cumulative Redeemable Preferred Stock | Digital Realty Trust, L.P.
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	0	277,172
Series F Cumulative Redeemable Preferred Stock
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	176,191	176,191
Series F Cumulative Redeemable Preferred Stock | Digital Realty Trust, L.P.
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	176,191	176,191
Series G Cumulative Redeemable Preferred Stock
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	241,468	241,468
Series G Cumulative Redeemable Preferred Stock | Digital Realty Trust, L.P.
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	241,468	241,468
Series H Cumulative Redeemable Preferred Stock
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	353,290	353,290
Series H Cumulative Redeemable Preferred Stock | Digital Realty Trust, L.P.
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	353,290	353,290
Series I Cumulative Redeemable Preferred Stock
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	242,012	242,014
Series I Cumulative Redeemable Preferred Stock | Digital Realty Trust, L.P.
Preferred Stock: $0.01 par value per share, 110,000,000 authorized as of December 31, 2016 and 70,000,000 shares authorized as of December 31, 2015:
Preferred Stock	242,012	242,014
Global revolving credit facility
LIABILITIES AND EQUITY
Line of credit	199,209	960,271
Global revolving credit facility | Digital Realty Trust, L.P.
LIABILITIES AND EQUITY
Line of credit	199,209	960,271
Unsecured term loan
LIABILITIES AND EQUITY
Line of credit	1,482,361	923,267
Unsecured term loan | Digital Realty Trust, L.P.
LIABILITIES AND EQUITY
Line of credit	$ 1,482,361	$ 923,267

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 7,446	$ 5,844
Accumulated amortization, acquired in-place leases, deferred leasing costs, and other intangible assets	772,443	621,132
Accumulated amortization, below market leases	$ 202,000	$ 193,677
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	110,000,000	70,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	265,000,000	215,000,000
Common stock, shares issued (in shares)	159,019,118	146,384,247
Common stock, shares outstanding (in shares)	159,019,118	146,384,247
Acquired above-market leases
Accumulated amortization, acquired above market leases	$ 87,961	$ 89,613
Series E Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 0	$ 287,500
Preferred stock, dividend rate	7.00%	7.00%
Preferred stock, liquidation preference per share/unit (in dollars per share/unit)	$ 25	$ 25
Preferred stock, shares issued (in shares)	0	11,500,000
Preferred stock, shares outstanding (in shares)	0	11,500,000
Series F Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 182,500	$ 182,500
Preferred stock, dividend rate	6.625%	6.625%
Preferred stock, liquidation preference per share/unit (in dollars 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 Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 250,000	$ 250,000
Preferred stock, dividend rate	5.875%	5.875%
Preferred stock, liquidation preference per share/unit (in dollars 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 Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 365,000	$ 365,000
Preferred stock, dividend rate	7.375%	7.375%
Preferred stock, liquidation preference per share/unit (in dollars 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 Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 250,000	$ 250,000
Preferred stock, dividend rate	6.35%	6.35%
Preferred stock, liquidation preference per share/unit (in dollars 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
Digital Realty Trust, L.P.
Allowance for doubtful accounts	$ 7,446	$ 5,844
Accumulated amortization, deferred leasing costs and intangible	772,443	621,132
Accumulated amortization, below market leases	$ 202,000	$ 193,677
Common units, issued (in units)	159,019,118	146,384,247
Common units, outstanding (in units)	159,019,118	146,384,247
Limited Partners, common units (in units)	1,141,814	1,421,314
Limited Partners, profits interest units (in units)	995,265	1,032,775
Limited Partners, Class C units outstanding (in units)	338,584	379,237
Digital Realty Trust, L.P. | Acquired above-market leases
Accumulated amortization, acquired above market leases	$ 87,961	$ 89,613
Digital Realty Trust, L.P. | Series E Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 0	$ 287,500
Preferred stock, dividend rate	7.00%	7.00%
Preferred stock, liquidation preference per share/unit (in dollars per share/unit)	$ 25	$ 25
Preferred units, issued (in units)	0	11,500,000
Preferred units, outstanding (in units)	0	11,500,000
Digital Realty Trust, L.P. | Series F Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 182,500	$ 182,500
Preferred stock, dividend rate	6.625%	6.625%
Preferred stock, liquidation preference per share/unit (in dollars per share/unit)	$ 25	$ 25
Preferred units, issued (in units)	7,300,000	7,300,000
Preferred units, outstanding (in units)	7,300,000	7,300,000
Digital Realty Trust, L.P. | Series G Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 250,000	$ 250,000
Preferred stock, dividend rate	5.875%	5.875%
Preferred stock, liquidation preference per share/unit (in dollars per share/unit)	$ 25	$ 25
Preferred units, issued (in units)	10,000,000	10,000,000
Preferred units, outstanding (in units)	10,000,000	10,000,000
Digital Realty Trust, L.P. | Series H Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 365,000	$ 365,000
Preferred stock, dividend rate	7.375%	7.375%
Preferred stock, liquidation preference per share/unit (in dollars per share/unit)	$ 25	$ 25
Preferred units, issued (in units)	14,600,000	14,600,000
Preferred units, outstanding (in units)	14,600,000	14,600,000
Digital Realty Trust, L.P. | Series I Cumulative Redeemable Preferred Stock
Preferred stock, liquidation preference value	$ 250,000	$ 250,000
Preferred stock, dividend rate	6.35%	6.35%
Preferred stock, liquidation preference per share/unit (in dollars per share/unit)	$ 25	$ 25
Preferred units, issued (in units)	10,000,000	10,000,000
Preferred units, outstanding (in units)	10,000,000	10,000,000

Consolidated Income Statements

Consolidated Income Statements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Revenues:
Rental	$ 1,542,511	$ 1,354,986	$ 1,256,086
Tenant reimbursements	355,903	359,875	350,234
Interconnection and other	204,317	40,759	0
Fee income	6,285	6,638	7,268
Other	33,197	1,078	2,850
Total operating revenues	2,142,213	1,763,336	1,616,438
Operating Expenses:
Rental property operating and maintenance	660,177	549,885	503,140
Property taxes	102,497	92,588	91,538
Insurance	9,492	8,809	8,643
Change in fair value of contingent consideration	0	(44,276)	(8,093)
Depreciation and amortization	699,324	570,527	538,513
General and administrative	152,733	105,549	93,188
Transaction expenses	20,491	17,400	1,303
Impairment of investments in real estate	0	0	126,470
Other	213	60,943	3,070
Total operating expenses	1,644,927	1,361,425	1,357,772
Operating income	497,286	401,911	258,666
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	17,104	15,491	13,289
Gain on sale of property	169,902	94,604	15,945
Gain on contribution of properties to unconsolidated joint ventures	0	0	95,404
Gain on sale of equity investment	0	0	14,551
Interest and other income	(4,564)	(2,381)	2,663
Interest expense	(236,480)	(201,435)	(191,085)
Tax expense	(10,385)	(6,451)	(5,238)
Loss from early extinguishment of debt	(1,011)	(148)	(780)
Net income	431,852	301,591	203,415
Net income attributable to noncontrolling interests	(5,665)	(4,902)	(3,232)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	426,187	296,689	200,183
Preferred stock dividends/Preferred units distributions	(83,771)	(79,423)	(67,465)
Issuance costs associated with redeemed preferred stock	(10,328)	0	0
Net income available to common stockholders/unitholders	$ 332,088	$ 217,266	$ 132,718
Net income per share/unit available to common stockholders/unitholders:
Basic (in dollars per share)	$ 2.21	$ 1.57	$ 1
Diluted (in dollars per share)	$ 2.20	$ 1.56	$ 0.99
Weighted average common shares/units outstanding:
Basic (in shares)	149,953,662	138,247,606	133,369,047
Diluted (in shares)	150,679,688	138,865,421	133,637,235
Digital Realty Trust, L.P.
Operating Revenues:
Rental	$ 1,542,511	$ 1,354,986	$ 1,256,086
Tenant reimbursements	355,903	359,875	350,234
Interconnection and other	204,317	40,759	0
Fee income	6,285	6,638	7,268
Other	33,197	1,078	2,850
Total operating revenues	2,142,213	1,763,336	1,616,438
Operating Expenses:
Rental property operating and maintenance	660,177	549,885	503,140
Property taxes	102,497	92,588	91,538
Insurance	9,492	8,809	8,643
Change in fair value of contingent consideration	0	(44,276)	(8,093)
Depreciation and amortization	699,324	570,527	538,513
General and administrative	152,733	105,549	93,188
Transaction expenses	20,491	17,400	1,303
Impairment of investments in real estate	0	0	126,470
Other	213	60,943	3,070
Total operating expenses	1,644,927	1,361,425	1,357,772
Operating income	497,286	401,911	258,666
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	17,104	15,491	13,289
Gain on sale of property	169,902	94,604	15,945
Gain on contribution of properties to unconsolidated joint ventures	0	0	95,404
Gain on sale of equity investment	0	0	14,551
Interest and other income	(4,564)	(2,381)	2,663
Interest expense	(236,480)	(202,800)	(191,085)
Tax expense	(10,385)	(6,451)	(5,238)
Loss from early extinguishment of debt	(1,011)	(148)	(780)
Net income	431,852	300,226	203,415
Net loss attributable to noncontrolling interests in consolidated joint ventures	(367)	(460)	(465)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	431,485	299,766	202,950
Preferred stock dividends/Preferred units distributions	(83,771)	(79,423)	(67,465)
Issuance costs associated with redeemed preferred stock	(10,328)	0	0
Net income available to common stockholders/unitholders	$ 337,386	$ 220,343	$ 135,485
Net income per share/unit available to common stockholders/unitholders:
Basic (in dollars per share)	$ 2.21	$ 1.56	$ 1
Diluted (in dollars per share)	$ 2.20	$ 1.55	$ 0.99
Weighted average common shares/units outstanding:
Basic (in shares)	152,359,680	140,905,897	136,122,661
Diluted (in shares)	153,085,706	141,523,712	136,390,849

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 431,852	$ 301,591	$ 203,415
Other comprehensive income:
Foreign currency translation adjustments	(86,621)	(51,745)	(52,373)
Increase (decrease) in fair value of derivatives	41,998	(3,407)	(7,936)
Reclassification to interest expense from interest rate swaps	4,968	2,621	3,419
Comprehensive income	392,197	249,060	146,525
Comprehensive income attributable to noncontrolling interests	(5,025)	(3,915)	(2,079)
Comprehensive income attributable to Digital Realty Trust, Inc.	387,172	245,145	144,446
Digital Realty Trust, L.P.
Net income	431,852	300,226	203,415
Other comprehensive income:
Foreign currency translation adjustments	(86,621)	(51,745)	(52,373)
Increase (decrease) in fair value of derivatives	41,998	(3,407)	(7,936)
Reclassification to interest expense from interest rate swaps	4,968	2,621	3,419
Comprehensive income	$ 392,197	$ 247,695	$ 146,525

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 Beginning of Period 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
Balance (shares) at Dec. 31, 2013			128,455,350
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 common units to common stock (shares)			134,073
Issuance of unvested restricted stock, net of forfeitures (in 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 (in shares)			6,869,912
Issuance of common stock in exchange for cash and debentures	266,400		$ 69	266,331			266,400
Issuance of preferred stock, net of offering costs	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 (loss)	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 derivatives	(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 at End of Period 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
Balance (shares) at Dec. 31, 2014			135,626,255
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 common units to common stock (shares)			156,008
Issuance of unvested restricted stock, net of forfeitures (in shares)			72,673
Common stock offering costs	799			799			799
Exercise of stock options	896			896			896
Exercise of stock options (shares)			29,311
Issuance of common stock in exchange for cash and debentures (in shares)			10,500,000
Issuance of common stock in exchange for cash and debentures	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 (loss)	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 derivatives	(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 at End of Period 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
Balance (shares) at Dec. 31, 2015			146,384,247
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of common units to common stock			$ 5	5,237			5,242	(5,242)		(5,242)
Conversion of common units to common stock (shares)			430,493
Issuance of unvested restricted stock, net of forfeitures (in shares)			120,082
Exercise of stock options	$ 1,380			1,380			1,380
Exercise of stock options (shares)	33,948		33,948
Issuance of common stock in exchange for cash and debentures (in shares)			12,000,000
Issuance of common stock in exchange for cash and debentures	$ 1,085,444		$ 120	1,085,324			1,085,444
Units issued in connection with employee stock purchase plan	3,349		$ 1	3,348			3,349
Shares issued under employee stock purchase plan (in shares)			50,348
Redemption of series E preferred units	(287,500)	(277,172)			(10,328)		(287,500)
Preferred unit offering costs	(2)	(2)					(2)
Amortization of unearned compensation on share-based awards	24,113			24,113			24,113
Reclassification of vested share-based awards				(10,125)			(10,125)	10,125		10,125
Dividends declared on preferred stock	(83,771)				(83,771)		(83,771)
Dividends and distributions on common stock and common and incentive units	(538,888)				(529,419)		(529,419)	(9,469)		(9,469)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	(527)								(527)	(527)
Net income (loss)	431,852				426,187		426,187	5,298	367	5,665
Other comprehensive income— foreign currency translation adjustments	(86,621)					(85,300)	(85,300)	(1,321)		(1,321)
Other comprehensive income— fair value of derivatives	41,998					41,395	41,395	603		603
Other comprehensive income— reclassification of accumulated other comprehensive loss to interest expense	4,968					4,890	4,890	78		78
Balance at End of Period at Dec. 31, 2016	$ 5,132,297	$ 1,012,961	$ 1,582	$ 5,764,497	$ (1,547,420)	$ (135,605)	$ 5,096,015	$ 29,684	$ 6,598	$ 36,282
Balance (shares) at Dec. 31, 2016			159,019,118

Consolidated Statements of Capi

Consolidated Statements of Capital - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (in units)		146,384,247			146,384,247
Conversion of limited partner common units to general partner common units					$ (5,242)	$ 1,843	$ 1,655
Common unit offering costs						799	(625)
Units issued in connection with employee stock purchase plan					3,349
Net proceeds from issuance of preferred units					1,085,444	675,577	266,400
Preferred unit offering costs					(2)
Redemption of series E preferred units					(287,500)
Conversion of preferred units						242,014	353,290
Amortization of unearned compensation on share-based awards					24,113	14,375	23,737
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions					(527)	(493)	(643)
Net income (loss)	$ 96,140	$ 62,333	$ (16,573)	$ 122,325	431,852	301,591	203,415
Other comprehensive income— foreign currency translation adjustments					(86,621)	(51,745)	(52,373)
Other comprehensive income— fair value of derivatives					41,998	(3,407)	(7,936)
Other comprehensive income— reclassification of accumulated other comprehensive loss to interest expense					$ 4,968	$ 2,621	3,419
Balance (in units)	159,019,118		146,384,247		159,019,118	146,384,247
Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of Beginning of Period		4,535,137		3,914,238	$ 4,535,137	$ 3,914,238	3,646,512
Common unit offering costs						799	(625)
Issuance of common units in connection with the exercise of stock options					1,380	896	711
Issuance of common units					1,085,444	675,577	266,400
Units issued in connection with employee stock purchase plan					3,349
Net proceeds from issuance of preferred units						242,014	353,290
Preferred unit offering costs					(2)
Redemption of series E preferred units					(287,500)
Amortization of unearned compensation on share-based awards					24,113	14,375	23,737
Distributions					(621,294)	(559,964)	(521,669)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions					(527)	(493)	(643)
Net income (loss)	$ 96,140	62,333	$ (16,785)	122,325	431,852	300,226	203,415
Other comprehensive income— foreign currency translation adjustments					(86,621)	(51,745)	(52,373)
Other comprehensive income— fair value of derivatives					41,998	(3,407)	(7,936)
Other comprehensive income— reclassification of accumulated other comprehensive loss to interest expense					4,968	2,621	3,419
Balance as of End of Period	5,132,297		4,535,137		5,132,297	4,535,137	3,914,238
Accumulated Other Comprehensive Income (Loss) | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of Beginning of Period		(100,964)		(48,433)	(100,964)	(48,433)	8,457
Other comprehensive income— foreign currency translation adjustments					(86,621)	(51,745)	(52,373)
Other comprehensive income— fair value of derivatives					41,998	(3,407)	(7,936)
Other comprehensive income— reclassification of accumulated other comprehensive loss to interest expense					4,968	2,621	3,419
Balance as of End of Period	(140,619)		(100,964)		(140,619)	(100,964)	(48,433)
Noncontrolling Interests in Consolidated Joint Ventures | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of Beginning of Period		6,758		6,791	6,758	6,791	6,969
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions					(527)	(493)	(643)
Net income (loss)					367	460	465
Balance as of End of Period	$ 6,598		$ 6,758		6,598	6,758	6,791
General Partner | Preferred Units | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of Beginning of Period		$ 1,290,135		$ 1,048,121	$ 1,290,135	$ 1,048,121	$ 694,831
Balance (in units)		53,400,000		43,400,000	53,400,000	43,400,000	28,800,000
Net proceeds from issuance of preferred units						$ 242,014	$ 353,290
Net proceeds from issuance of preferred units (in units)						10,000,000	14,600,000
Preferred unit offering costs					$ (2)
Redemption of series E preferred units					$ (277,172)
Redemption of series E preferred units (units)					(11,500,000)
Distributions					$ (83,771)	$ (79,423)	$ (67,465)
Net income (loss)					$ 83,771	$ 79,423	$ 67,465
Balance (in units)	41,900,000		53,400,000		41,900,000	53,400,000	43,400,000
Balance as of End of Period	$ 1,012,961		$ 1,290,135		$ 1,012,961	$ 1,290,135	$ 1,048,121
General Partner | Common Units | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of Beginning of Period		$ 3,305,222		$ 2,875,181	$ 3,305,222	$ 2,875,181	$ 2,904,994
Balance (in units)		146,384,247		135,626,255	146,384,247	135,626,255	128,455,350
Conversion of limited partner common units to general partner common units					$ 5,242	$ 1,843	$ 1,655
Conversion of limited partner common units to general partner common units (units)					430,493	156,008	134,073
Issuance of restricted common units, net of forfeitures (units)					120,082	72,673	124,163
Common unit offering costs						$ 799	$ (625)
Issuance of common units in connection with the exercise of stock options					$ 1,380	$ 896	$ 711
Issuance of common units in connection with the exercise of stock options (units)					33,948	29,311	42,757
Issuance of common units					$ 1,085,444	$ 675,577	$ 266,400
Issuance of common stock in exchange for cash and debentures (units)					12,000,000	10,500,000	6,869,912
Units issued in connection with employee stock purchase plan					$ 3,349
Units issued in connection with employee stock purchase plan (units)					50,348
Redemption of series E preferred units					$ (10,328)
Amortization of unearned compensation on share-based awards					24,113	$ 14,375	$ 23,737
Reclassification of vested share-based awards					(10,125)	(8,602)	(10,306)
Distributions					(528,054)	(470,748)	(444,103)
Net income (loss)					$ 342,416	$ 215,901	$ 132,718
Balance (in units)	159,019,118		146,384,247		159,019,118	146,384,247	135,626,255
Balance as of End of Period	$ 4,218,659		$ 3,305,222		$ 4,218,659	$ 3,305,222	$ 2,875,181
Limited Partners | Common Units | Digital Realty Trust, L.P.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance as of Beginning of Period		$ 33,986		$ 32,578	$ 33,986	$ 32,578	$ 31,261
Balance (in units)		2,833,326		3,013,661	2,833,326	3,013,661	2,967,021
Conversion of limited partner common units to general partner common units					$ (5,242)	$ (1,843)	$ (1,655)
Conversion of limited partner common units to general partner common units (units)					(430,493)	(156,008)	(134,073)
Issuance of common units, net of forfeitures (units)					72,830	(24,327)	180,713
Reclassification of vested share-based awards					$ 10,125	$ 8,602	$ 10,306
Distributions					(9,469)	(9,793)	(10,101)
Net income (loss)					$ 5,298	$ 4,442	$ 2,767
Balance (in units)	2,475,663		2,833,326		2,475,663	2,833,326	3,013,661
Balance as of End of Period	$ 34,698		$ 33,986		$ 34,698	$ 33,986	$ 32,578

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss)	$ 431,852	$ 301,591	$ 203,415
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of properties	(169,902)	(94,604)	(15,945)
Non-cash gain on lease termination	(29,205)	0	0
Gain on contribution of investment properties to unconsolidated joint venture	0	0	(95,404)
Gain on sale of investment	0	0	(14,551)
Impairment of investments in real estate	0	0	126,470
Equity in earnings of unconsolidated joint ventures	(17,104)	(15,491)	(13,289)
Change in fair value of contingent consideration	0	(44,276)	(8,093)
Distributions from unconsolidated joint ventures	16,755	14,947	9,684
Write-off of net assets due to early lease terminations	213	75,263	2,692
Gain on settlement of pre-existing relationships with Telx	0	(14,355)	0
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	518,716	464,694	456,204
Amortization of share-based unearned compensation	17,433	6,360	18,019
Allowance for (recovery of) doubtful accounts	1,602	(458)	726
Amortization of deferred financing costs	9,908	8,481	8,969
Write-off of deferred financing costs, included in loss on early extinguishment of debt	1,011	148	780
Amortization of debt discount/premium	2,616	2,032	1,837
Amortization of acquired in-place lease value and deferred leasing costs	180,608	105,833	82,310
Amortization of acquired above-market leases and acquired below-market leases	(8,351)	(9,336)	(9,983)
Changes in assets and liabilities, net of impact of Telx and European Portfolio Acquisitions
Restricted cash	1,020	2,392	13,523
Accounts and other receivables	(13,754)	(10,127)	(11,426)
Deferred rent	(24,401)	(48,404)	(77,483)
Deferred leasing costs	60	(11,688)	(32,068)
Other assets	(69,924)	(2,928)	(11,675)
Accounts payable and other accrued liabilities	38,432	36,113	24,775
Security deposits and prepaid rents	24,677	33,045	(3,599)
Net cash provided by operating activities	912,262	799,232	655,888
Cash flows from investing activities:
Telx Acquisition, net of cash acquired	0	(1,850,061)	0
Acquisitions of real estate, net of cash acquired	(873,285)	(99,247)	(24,305)
Proceeds from sale of assets, net of sales costs	359,319	185,565	37,945
Proceeds from contribution of investment properties to unconsolidated joint venture	0	0	178,933
Proceeds from sale of investment	0	0	31,635
Investment in unconsolidated joint ventures	0	(10,797)	(20,627)
Receipt of value added tax refund	11,624	17,570	18,992
Refundable value added tax paid	(43,719)	(30,322)	(29,585)
Change in restricted cash	4,166	1,479	14,899
Improvements to and advances for investments in real estate	(758,081)	(737,180)	(852,386)
Improvement advances to tenants	(16,239)	(40,553)	(20,059)
Collection of advances from tenants for improvements	16,784	37,524	20,378
Net cash used in investing activities	(1,299,431)	(2,526,022)	(644,180)
Cash flows from financing activities:
Borrowings on revolving credit facility	2,533,507	2,436,032	1,124,608
Repayments on revolving credit facility	(3,283,087)	(1,958,025)	(1,297,785)
Borrowings on unsecured term loan	766,201	0	0
Repayments on unsecured term loan	(170,736)	0	0
Principal payments on unsecured notes	0	(374,927)	0
Borrowings on unsecured senior notes	675,591	1,445,127	495,872
Repayments on other secured loans	(25,000)	(67,000)	0
Principal payments on mortgage loans	(299,826)	(75,492)	(177,882)
Earnout payments related to acquisitions	(23,213)	(12,985)	(11,011)
Change in restricted cash	1,314	(1,502)	510
Payment of loan fees and costs	(19,574)	(13,488)	(4,860)
Capital distributions to from noncontrolling interests in consolidated joint ventures	(527)	(493)	(643)
Gross proceeds from the issuance of common stock	1,089,154	675,577	0
Gross proceeds from the issuance of preferred stock	0	250,000	365,000
Common and preferred stock offering costs paid, net	(3,712)	(6,633)	(12,335)
Proceeds from exercise of stock options	4,729	896	711
Redemption of preferred stock	(287,500)	0	0
Payment of distributions to preferred stockholders/unitholders	(83,771)	(79,423)	(67,465)
Payment of distributions to common stockholders/unitholders	(521,619)	(468,635)	(441,694)
Net cash provided by (used in) financing activities	351,931	1,749,029	(26,974)
Net (decrease) increase in cash and cash equivalents	(35,238)	22,239	(15,266)
Effect of exchange rate changes on cash	(11,287)	0	0
Cash and cash equivalents at beginning of period	57,053	34,814	50,080
Cash and cash equivalents at end of period	10,528	57,053	34,814
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	216,713	180,141	180,456
Cash paid for income taxes	3,698	3,122	3,099
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	(86,621)	(51,745)	(52,373)
Accrual of dividends and distributions	144,194	126,925	115,019
Increase (decrease) in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	41,998	(3,407)	(7,936)
Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock	(5,242)	1,843	1,655
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	128,531	109,394	153,080
Accrual for potential earnout contingency	0	19,364	12,338
Note receivable related to sale of property	0	9,000	0
Issuance of common units associated with exchange of exchangeable senior debentures	0	0	261,166
Assumption of capital lease obligations upon acquisition	118,923	63,692	0
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	378,431	99,247	24,305
Accounts receivable	8,537	0	0
Goodwill	448,123	0	0
Acquired below-market leases	(922)	0	0
Acquired in-place lease value and deferred leasing costs	226,877	0	0
Other assets	9,011	0	0
Capital lease obligations	(118,923)	0	0
Accounts payables and other accrued liabilities	(69,084)	0	0
Security deposits and prepaid rents	(8,765)	0	0
Cash paid for acquisition of real estate	873,285	99,247	24,305
Digital Realty Trust, L.P.
Cash flows from operating activities:
Net income (loss)	431,852	300,226	203,415
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of properties	(169,902)	(94,604)	(15,945)
Non-cash gain on lease termination	(29,205)	0	0
Gain on contribution of investment properties to unconsolidated joint venture	0	0	(95,404)
Gain on sale of investment	0	0	(14,551)
Impairment of investments in real estate	0	0	126,470
Equity in earnings of unconsolidated joint ventures	(17,104)	(15,491)	(13,289)
Change in fair value of contingent consideration	0	(44,276)	(8,093)
Distributions from unconsolidated joint ventures	16,755	14,947	9,684
Write-off of net assets due to early lease terminations	213	75,263	2,692
Gain on settlement of pre-existing relationships with Telx	0	(14,355)	0
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	518,716	464,694	456,204
Amortization of share-based unearned compensation	17,433	6,360	18,019
Allowance for (recovery of) doubtful accounts	1,602	(458)	726
Amortization of deferred financing costs	9,908	8,481	8,969
Write-off of deferred financing costs, included in loss on early extinguishment of debt	1,011	148	780
Amortization of debt discount/premium	2,616	2,032	1,837
Amortization of acquired in-place lease value and deferred leasing costs	180,608	105,833	82,310
Amortization of acquired above-market leases and acquired below-market leases	(8,351)	(9,336)	(9,983)
Changes in assets and liabilities, net of impact of Telx and European Portfolio Acquisitions
Restricted cash	1,020	2,392	13,523
Accounts and other receivables	(13,754)	(10,127)	(11,426)
Deferred rent	(24,401)	(48,404)	(77,483)
Deferred leasing costs	60	(11,688)	(32,068)
Other assets	(69,924)	(2,928)	(11,675)
Accounts payable and other accrued liabilities	38,432	37,478	24,775
Security deposits and prepaid rents	24,677	33,045	(3,599)
Net cash provided by operating activities	912,262	799,232	655,888
Cash flows from investing activities:
Telx Acquisition, net of cash acquired	0	(1,850,061)	0
Acquisitions of real estate, net of cash acquired	(873,285)	(99,247)	(24,305)
Proceeds from sale of assets, net of sales costs	359,319	185,565	37,945
Proceeds from contribution of investment properties to unconsolidated joint venture	0	0	178,933
Proceeds from sale of investment	0	0	31,635
Investment in unconsolidated joint ventures	0	(10,797)	(20,627)
Receipt of value added tax refund	11,624	17,570	18,992
Refundable value added tax paid	(43,719)	(30,322)	(29,585)
Change in restricted cash	4,166	1,479	14,899
Improvements to and advances for investments in real estate	(758,081)	(737,180)	(852,386)
Improvement advances to tenants	(16,239)	(40,553)	(20,059)
Collection of advances from tenants for improvements	16,784	37,524	20,378
Net cash used in investing activities	(1,299,431)	(2,526,022)	(644,180)
Cash flows from financing activities:
Borrowings on revolving credit facility	2,533,507	2,436,032	1,124,608
Repayments on revolving credit facility	(3,283,087)	(1,958,025)	(1,297,785)
Borrowings on unsecured term loan	766,201	0	0
Repayments on unsecured term loan	(170,736)	0	0
Principal payments on unsecured notes	0	(374,927)	0
Borrowings on unsecured senior notes	675,591	1,445,127	495,872
Repayments on other secured loans	(25,000)	(67,000)	0
Principal payments on mortgage loans	(299,826)	(75,492)	(177,882)
Earnout payments related to acquisitions	(23,213)	(12,985)	(11,011)
Change in restricted cash	1,314	(1,502)	510
Payment of loan fees and costs	(19,574)	(13,488)	(4,860)
Capital distributions to from noncontrolling interests in consolidated joint ventures	(527)	(493)	(643)
General partner contributions	802,671	919,840	353,376
Payment of distributions to preferred stockholders/unitholders	(83,771)	(79,423)	(67,465)
Payment of distributions to common stockholders/unitholders	(521,619)	(468,635)	(441,694)
Net cash provided by (used in) financing activities	351,931	1,749,029	(26,974)
Net (decrease) increase in cash and cash equivalents	(35,238)	22,239	(15,266)
Effect of exchange rate changes on cash	(11,287)	0	0
Cash and cash equivalents at beginning of period	57,053	34,814	50,080
Cash and cash equivalents at end of period	10,528	57,053	34,814
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	216,713	180,141	180,456
Cash paid for income taxes	3,698	3,122	3,099
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	(86,621)	(51,745)	(52,373)
Accrual of dividends and distributions	144,194	126,925	115,019
Increase (decrease) in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	41,998	(3,407)	(7,936)
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	128,531	109,394	153,080
Accrual for potential earnout contingency	0	19,364	12,338
Note receivable related to sale of property	0	9,000	0
Issuance of common units associated with exchange of exchangeable senior debentures	0	261,166	0
Assumption of capital lease obligations upon acquisition	118,923	63,692	0
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	378,431	99,247	24,305
Accounts receivable	8,537	0	0
Goodwill	448,123	0	0
Acquired below-market leases	(922)	0	0
Acquired in-place lease value and deferred leasing costs	226,877	0	0
Other assets	9,011	0	0
Capital lease obligations	(118,923)	0	0
Accounts payables and other accrued liabilities	(69,084)	0	0
Security deposits and prepaid rents	(8,765)	0	0
Cash paid for acquisition of real estate	$ 873,285	$ 99,247	$ 24,305

Organization and Description of

Organization and Description of Business	12 Months Ended
	Dec. 31, 2016
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 data centers. The Company is focused on providing data center, colocation and interconnection 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, 2016 , our portfolio consisted of 145 operating properties, including 14 properties held as investments in unconsolidated joint ventures, of which 104 are located throughout the United States, 32 are located in Europe, four are located in Asia, three are located in Australia and two are located in Canada. We are diversified in major metropolitan areas where 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, London and Paris metropolitan areas in Europe and the Singapore, Sydney, Melbourne, Hong Kong and Osaka metropolitan areas in the Asia Pacific region. The portfolio consists of data centers, Internet gateway data centers and office and other non-data center space. 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, 2016 , Digital Realty Trust, Inc. owns a 98.5% 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.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
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, 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, 2016 and 2015 , 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 is amortized to expense over the remaining initial terms of the respective leases. The value of tenant relationship intangibles is 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 performs 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 our qualitative assessment indicates that goodwill impairment is more likely than not, we perform a two-step impairment test. We test goodwill for impairment under the two-step impairment test by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value or qualitative factors indicate that it is more likely than not that goodwill is impaired, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. We estimate the fair value of the reporting units using discounted cash flows. If the carrying value of goodwill exceeds its fair value, an impairment charge is recognized. We have not recognized any goodwill impairments since our inception. Goodwill amounted to approximately $753.0 million and $330.7 million as of December 31, 2016 and 2015 , respectively. (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, 2016 , 2015 and 2014 , we capitalized interest of approximately $16.3 million , $12.9 million and $20.4 million , respectively. During the years ended December 31, 2016 , 2015 and 2014 , we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $68.9 million , $56.8 million and $50.1 million , respectively. Cash flows used for capitalized leasing costs of $47.3 million , $49.9 million and $49.0 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, 2016 , 2015 and 2014 , 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 $253.7 million and $236.0 million , net of accumulated amortization, as of December 31, 2016 and 2015 , 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. In the statement of cash flows, cash flows denominated in foreign currencies are translated using the exchange rates in effect at the time of the cash flows or an average exchange rate for the period, depending on the nature of the cash flow item. (k) Deferred Financing Costs Loan fees and costs are recorded as an adjustment to the carrying amount of the related debt 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 settlement of derivatives or ineffective portion of the hedging relationships for the years ended December 31, 2016 , 2015 and 2014 was approximately $(3.1) million , $(1.6) million and $0.8 million , respectively. 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. In addition, we have entered into a series of forward contracts pursuant to which we agreed to sell an amount of foreign currency for an agreed upon amount of USD. These forward contracts were executed to manage foreign currency exposures associated with certain transactions. 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 (“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, 2016 and 2015 , 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, 2016 , 2015 and 2014 , we had no such interest or penalties. The tax year 2013 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. During the three months ended December 31, 2016 , we recognized a non-cash gain on lease termination of approximately $29.2 million , as one of our tenants, as part of a lease termination, conveyed substantially all of its colocation and turn-key improvements to the Company. Colocation services are generally governed by a master terms and conditions agreement (MTC). Customers typically execute an MTC for one - to three -year terms. The Company bills customers on a monthly basis and recognizes the revenue as those services are performed over the term of the agreement. Revenues from installation services for colocation services are initially deferred and recognized on a straight-line basis over the average life of customer contracts. Interconnection services are generally provided on a month-to-month, one-year or multi-year term under the MTC for colocation services. Interconnection services include port and cross-connect services. Port services are typically sold on a one-year or multi-year term and revenue is recognized on a recurring monthly basis similar to colocation services. The Company bills customers on a monthly basis and recognizes the revenue in the period the service is provided. Revenue for cross-connect installations is generally recognized in the period the cross-connect is installed. 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) Gains on Sale of Properties Gains on sale of properties are recognized using the full accrual or partial sale methods, as applicable, in accordance with U.S. GAAP, provided various criteria relating to the terms of sale and any subsequent involvement with the real estate sold are satisfied. (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) 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 costs associated with asbestos removal at the end of the economic life of properties that were built before 1984 along with remediation of soil contamination issues. As of December 31, 2016 and 2015 , the amount included in accounts payable and other accrued liabilities on our consolidated balance sheets was approximately $5.7 million and $1.3 million , respectively. (v) 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 w

Investments in Real Estate

Investments in Real Estate	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Investments in Real Estate	Investments in Real Estate A summary of our investments in properties as of December 31, 2016 and 2015 is as follows: As of December 31, 2016 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 109,714 $ — $ 1,924,869 $ 93,472 $ (675,725 ) $ 1,452,330 Data Centers 598,475 10,014 8,052,356 431,444 (1,924,694 ) 7,167,595 Technology Manufacturing 20,199 1,321 57,766 6,333 (24,595 ) 61,024 Technology Office 12,398 — 73,650 1,460 (21,407 ) 66,101 Other 6,036 — 158,884 78 (22,088 ) 142,910 $ 746,822 $ 11,335 $ 10,267,525 $ 532,787 $ (2,668,509 ) $ 8,889,960 As of December 31, 2015 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 109,389 $ — $ 1,440,594 $ 95,185 $ (607,452 ) $ 1,037,716 Data Centers 539,298 11,317 7,438,334 433,679 (1,575,589 ) 6,847,039 Technology Manufacturing 20,199 1,322 56,254 6,333 (22,677 ) 61,431 Technology Office 12,142 — 49,470 1,459 (18,564 ) 44,507 Other 8,545 — 691,775 78 (26,986 ) 673,412 $ 689,573 $ 12,639 $ 9,676,427 $ 536,734 $ (2,251,268 ) $ 8,664,105 (1) Balance includes, as of December 31, 2016 and 2015 , $0.9 billion and $0.7 billion of direct and accrued costs associated with development in progress, respectively. Acquisitions We acquired the following real estate properties during the years ended December 31, 2016 and 2015 : 2016 Acquisitions Location Market Date Acquired Amount Sovereign House London July 5, 2016 (1) West Drayton London July 5, 2016 (1) Olivers Yard London July 5, 2016 (1) Bonnington House London July 5, 2016 (1) Meridian Gate London July 5, 2016 (1) Amsterdam Business Park Amsterdam July 5, 2016 (1) Amsterdam Science Park Amsterdam July 5, 2016 (1) Lyonerstrasse Frankfurt July 5, 2016 (1) Land parcels (2) Various Various $ 47.6 Total $ 866.5 (1) On July 5, 2016, the Company completed the acquisition of a portfolio of eight high-quality, carrier-neutral data centers in Europe from Equinix, which we refer to as the European Portfolio Acquisition. The purchase price was $818.9 million in the aggregate (based on the exchange rate at the date of acquisition). (2) Represents currently vacant land which is not included in our operating property count. We completed four acquisitions of land parcels in the three months ended September 30, 2016 in Northern Virginia, Dallas and Chicago. Excludes capitalized closing costs on land acquisitions. The table below summarizes the preliminary purchase price allocation for the European Portfolio Acquisition (in thousands): Investments in real estate $ 270,195 Goodwill 445,137 Intangibles: Tenant relationship value 249,070 Acquired in-place lease value 18,807 Above/below-market lease value, net 4,817 Capital lease and other long-term obligations (118,923 ) Deferred taxes (50,199 ) Total purchase price $ 818,904 Due to the timing of the closing of the European Portfolio Acquisition, the final purchase price allocation is expected to be completed in early 2017. As such, the estimates used as of December 31, 2016 are subject to change, including the amounts allocated to the acquired intangible assets, including goodwill, and deferred taxes. The Company recorded transaction expenses of approximately $6.9 million in the accompanying 2016 consolidated income statement in connection with the European Portfolio Acquisition. Actual results in 2016 included total revenues and operating expenses of the acquired properties of $55.3 million and $20.1 million , respectively. Pro forma Information (unaudited) The following unaudited pro forma financial information presents our results as though the European Portfolio Acquisition had been consummated as of January 1, 2015. 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 European Portfolio Acquisition and also does not include any transaction and integration expenses. The pro forma results for 2016 include approximately six months of actual results for the European Portfolio Acquisition and six months of pro forma adjustments. (amounts in thousands, except for per share amounts) 2016 2015 Total revenues $ 2,199,358 $ 1,875,783 Net income (loss) available to common stockholders $ 343,235 $ 239,201 Net income (loss) per share available to common stockholders - basic and diluted $ 2.28 $ 1.72 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, a leading national provider of data center colocation, interconnection and cloud enablement solutions, 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. The final purchase price allocation was completed in early 2016. The final adjustments to the preliminary purchase price allocation were not material. The following table summarizes the 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 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. Purchase Price Accounting for Europe Portfolio and Telx Acquisitions 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 its respective acquisitions product and service offerings. 2015 Acquisitions Location Market 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 (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, 2016 and 2015 : 2016 Dispositions Location Market Date Sold Gross Proceeds (in millions) Gain on Sale (in millions) 47700 Kato Road and 1055 Page Avenue Silicon Valley January 21, 2016 $ 37.5 $ 1.0 Data center portfolio (1) Various July 11, 2016 114.5 24.5 114 Rue Ambroise Croizat (2) Paris August 1, 2016 212.0 144.3 $ 364.0 $ 169.8 (1) On July 11, 2016, the Company closed on the sale of a four -property data center portfolio, including two in St. Louis and two in Northern Virginia, totaling over 454,000 square feet for approximately $114.5 million . The Company recognized a gain on the sale of approximately $24.5 million in the third quarter of 2016. The four properties were classified as held for sale as of June 30, 2016. (2) The Company granted Equinix an option to acquire the Company's facility in 114 rue Ambroise Croizat in Paris. Equinix elected to exercise its option to acquire the Paris property, and on July 2, 2016, the Company entered into an agreement to sell the property to Equinix for approximately €190 million (or approximately $212 million based on the exchange rate as of August 1, 2016). The Paris property sale closed on August 1, 2016. The Company recognized a gain on the sale of approximately $144.3 million in the third quarter of 2016. This property was classified as held for sale as of June 30, 2016. 2015 Dispositions Location Market 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 (1) Gross proceeds includes a $9.0 million note receivable, which was collected prior to December 31, 2015 . In 2014, we identified certain non-core investment properties we intend to sell as part of our capital recycling strategy. Our capital recycling program was 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 evaluated the carrying value of certain investment properties identified for potential sale to ensure the carrying value was recoverable in light of a potentially shorter holding period. As a result of our evaluation, during the year ended December 31, 2014 , we recognized approximately $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. During 2015 and 2016, additional properties were identified for potential sale, however, no additional impairment losses were required. As of December 31, 2015 , eight of the identified properties with a carrying value of $180.1 million within total assets and $5.8 million within total liabilities met the criteria to be classified as held for sale. As of December 31, 2016 , three of the identified properties with a carrying value of $56.1 million within total assets and $2.6 million within total liabilities, remained in our portfolio and we concluded they continued to meet the criteria to be classified as held for sale. None of the properties that have been sold or are currently classified as held for sale represent 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, 2016
Equity Method Investments and Joint Ventures [Abstract]
Investment in Unconsolidated Joint Ventures	Investment in Unconsolidated Joint Ventures As of December 31, 2016 , 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, 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) and a 17% interest in a joint venture that owns a data property at 1101 Space Park Drive in Santa Clara, California. The following tables present summarized financial information for our material joint ventures for the years ended December 31, 2016 , 2015 , and 2014 (in thousands): 2016 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 27,342 $ 43,258 $ 101,394 $ 106,241 $ (62,983 ) $ 45,518 $ (15,574 ) $ 29,944 $ 16,374 2020 Fifth Avenue 50.00 % 45,973 55,005 47,000 47,612 7,393 8,788 (1,500 ) 7,288 4,821 33 Chun Choi Street (Hong Kong) 50.00 % 134,249 184,855 — 3,291 181,564 18,856 (6,636 ) 12,220 6,315 PREI ® 20.00 % 409,876 468,298 207,270 288,325 179,973 41,075 (8,503 ) 32,572 13,615 GCEAR 20.00 % 116,949 162,863 101,477 104,393 58,470 19,742 (7,808 ) 11,934 (1,396 ) 1101 Space Park Drive 17.00 % 6,839 8,415 — 135 8,280 3,539 (4,105 ) (566 ) $ (1,515 ) Total Unconsolidated Joint Ventures $ 741,228 $ 922,694 $ 457,141 $ 549,997 $ 372,697 $ 137,518 $ (44,126 ) $ 93,392 $ 38,214 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 106,402 $ 17,104 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 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 immaterial for each of the years ended December 31, 2016 , 2015 and 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 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 ventures. 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. 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, 2016
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, 2016 and 2015 . Balance as of (Amounts in thousands) December 31, 2016 December 31, 2015 Real Estate Intangibles: Acquired in-place lease value: Gross amount $ 896,693 $ 901,381 Accumulated amortization (517,443 ) (472,933 ) Net $ 379,250 $ 428,448 Tenant relationship value: Gross amount $ 971,519 $ 734,800 Accumulated amortization (82,069 ) (14,495 ) Net $ 889,450 $ 720,305 Trade name: Gross amount $ 7,300 $ 7,300 Accumulated amortization (7,300 ) (417 ) Net $ — $ 6,883 Acquired above-market leases: Gross amount $ 110,142 $ 122,311 Accumulated amortization (87,961 ) (89,613 ) Net $ 22,181 $ 32,698 Acquired below-market leases: Gross amount $ 283,899 $ 294,791 Accumulated amortization (202,000 ) (193,677 ) Net $ 81,899 $ 101,114 Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $7.5 million , $9.3 million and $10.0 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. The expected average remaining lives for acquired below-market leases and acquired above-market leases is 6.5 years and 4.1 years, respectively, as of December 31, 2016 . 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, 2017 is as follows: (Amounts in thousands) 2017 $ 7,216 2018 5,566 2019 5,698 2020 7,422 2021 7,114 Thereafter 26,702 Total $ 59,718 Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $52.6 million , $46.2 million and $62.2 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. The expected average amortization period for acquired in place lease value is 8.0 years as of December 31, 2016 . The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 7.0 years as of December 31, 2016 . Estimated annual amortization of acquired in-place lease value for each of the five succeeding years and thereafter, commencing January 1, 2017 is as follows: (Amounts in thousands) 2017 $ 54,088 2018 47,640 2019 40,515 2020 36,561 2021 33,958 Thereafter 166,488 Total $ 379,250 Amortization of tenant relationship value and trade names (a component of depreciation and amortization expense) was approximately $67.2 million and $6.9 million , respectively for the year ended December 31, 2016 , $14.5 million and $0.4 million , respectively for the year ended December 31, 2015 and $0 in 2014. During the quarter ended June 30, 2016, management of the Company decided to retire the Telx trade name. Accordingly, the Company wrote off the net remaining balance of approximately $6.1 million . The weighted average remaining contractual life for customer contracts is 13.0 years . Estimated annual amortization of customer contracts for each of the five succeeding years and thereafter, commencing January 1, 2017 is as follows: (Amounts in thousands) 2017 $ 69,608 2018 69,608 2019 69,608 2020 69,608 2021 69,608 Thereafter 541,410 Total $ 889,450

Debt of the Company

Debt of the Company	12 Months Ended
	Dec. 31, 2016
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), 3.400% Notes due 2020 ( 3.400% 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), 4.750% notes due 2025 ( 4.750% 2025 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) and the obligations of Digital Euro Finco, LLC, a wholly owned subsidiary of the Operating Partnership, with respect to its 2.625% notes due 2024 (2024 Notes. The Company is also the guarantor of the Operating Partnership’s and its subsidiary borrowers’ obligations under the 2016 global revolving credit facility and unsecured term loan.

Debt of the Operating Partnersh

Debt of the Operating Partnership	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 is as follows (in thousands): Indebtedness Interest Rate at December 31, 2016 Maturity Date Principal Outstanding December 31, 2016 Principal Outstanding December 31, 2015 Global revolving credit facility Various (1) Jan 15, 2020 (1) $ 210,077 (2) $ 967,884 (2) Deferred financing costs, net (10,868 ) (7,613 ) Global revolving credit facility, net 199,209 960,271 Unsecured Term Loan Unsecured term loan — 5-year Various (3)(4) Jan 15, 2021 1,188,498 (5) 924,568 (5) Unsecured term loan — 7-year Various (3)(4) Jan 15, 2023 300,000 (5) — Deferred financing costs, net (6,137 ) (1,301 ) Unsecured term loan, net 1,482,361 923,267 Unsecured senior notes: Prudential Shelf Facility: Series C 9.680% Jan 6, 2016 — 25,000 Series E 5.730% Jan 20, 2017 (6) 50,000 50,000 Total Prudential Shelf Facility 50,000 75,000 Senior Notes: 5.875% notes due 2020 5.875% Feb 1, 2020 500,000 500,000 3.400% notes due 2020 3.400% Oct 1, 2020 500,000 500,000 5.250% notes due 2021 5.250% Mar 15, 2021 400,000 400,000 3.950% notes due 2022 3.950% Jul 1, 2022 500,000 500,000 3.625% notes due 2022 3.625% Oct 1, 2022 300,000 300,000 4.750% notes due 2023 4.750% Oct 13, 2023 370,200 (7) 442,080 (7) 2.625% notes due 2024 2.625% Apr 15, 2024 631,020 (8) — 4.250% notes due 2025 4.250% Jan 17, 2025 493,600 (7) 589,440 (7) 4.750% notes due 2025 4.750% Oct 1, 2025 450,000 450,000 Unamortized discounts (15,649 ) (17,914 ) Total senior notes, net of discount 4,129,171 3,663,606 Deferred financing costs, net (25,374 ) (26,037 ) Total unsecured senior notes, net of discount and deferred financing costs 4,153,797 3,712,569 Mortgage loans: 2045 & 2055 Lafayette Street 5.93% Feb 6, 2017 — 61,437 34551 Ardenwood Boulevard 1-4 5.95% Nov 11, 2016 — 50,477 1100 Space Park Drive 5.89% Dec 11, 2016 — 50,423 600 West Seventh Street 5.80% Mar 15, 2016 — 46,000 150 South First Street 6.30% Feb 6, 2017 — 48,484 2334 Lundy Place 5.96% Nov 11, 2016 — 36,714 8025 North Interstate 35 4.09% Mar 6, 2016 — 5,789 731 East Trade Street 8.22% Jul 1, 2020 2,916 3,420 Unamortized net premiums 334 439 Total mortgage loans, including premiums 3,250 303,183 Deferred financing costs, net (10 ) (253 ) Total mortgage loans, including premiums and net of deferred financing costs 3,240 302,930 Total indebtedness $ 5,838,607 $ 5,899,037 (1) The interest rate for borrowings under the 2016 global revolving credit facility equals the applicable index plus a margin of 100 basis points, which is based on the current credit ratings of our long-term debt. An annual facility fee of 20 basis points, which is based on the current credit ratings 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, 2016 and December 31, 2015 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2016 Weighted-average Balance as of December 31, 2015 Weighted-average Floating Rate Borrowing (a) U.S. dollar ($) $ 105,000 1.67 % $ 274,000 1.46 % British pound sterling (£) 11,106 (b) 1.25 % 95,784 (d) 1.61 % Euro (€) 15,250 (b) 0.63 % 280,565 (d) 0.90 % Australian dollar (AUD) — — % 96,831 (d) 3.16 % Hong Kong dollar (HKD) 1,728 (b) 1.66 % 86,082 (d) 1.33 % Japanese yen (JPY) 54,273 (b) 0.92 % 14,304 (d) 1.15 % Singapore dollar (SGD) 11,186 (b) 1.52 % 49,132 (d) 1.92 % Canadian dollar (CAD) 11,534 (b) 1.92 % 71,186 (d) 1.95 % Total $ 210,077 1.39 % $ 967,884 1.53 % (a) The interest rates for floating rate borrowings under the global revolving credit facility currently equal the applicable index plus a margin of 100 basis points, which is based on the credit rating of our long-term debt. (b) Based on exchange rates of $1.23 to £1.00, $1.05 to €1.00 , $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.69 to 1.00 SGD and $0.74 to 1.00 CAD, respectively, as of December 31, 2016 . (c) Based on exchange rates $1.47 to £1.00, of $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 $0.72 to 1.00 CAD, respectively, as of December 31, 2015 . (3) Interest rates are based on our current senior unsecured debt ratings and are 110 basis points and 155 basis points over the applicable index for floating rate advances for the 5 -Year Term Loan and the 7 -Year Term Loan, respectively. (4) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar, Singapore dollar, British pound sterling and Canadian dollar tranches of the unsecured term loan. See Note 14 "Derivative Instruments" for further information. (5) Balances as of December 31, 2016 and December 31, 2015 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2016 Weighted-average Balance as of December 31, 2015 Weighted-average U.S. dollar ($) $ 710,911 1.99 % (b) $ 410,905 1.51 % (d) British pound sterling (£) 209,132 (a) 1.36 % (b) 178,195 (c) 1.78 % (d) Singapore dollar (SGD) 222,824 (a) 1.76 % (b) 161,070 (c) 2.16 % Australian dollar (AUD) 170,325 (a) 2.72 % 75,337 (c) 3.27 % Hong Kong dollar (HKD) 86,029 (a) 1.77 % — — % Canadian dollar (CAD) 73,294 (a) 2.00 % (b) — — % Euro (€) — — % 99,061 (c) 1.00 % Japanese yen (JPY) 15,983 (a) 0.98 % — — % Total $ 1,488,498 1.93 % (b) $ 924,568 1.76 % (d) (a) Based on exchange rates of $0.69 to 1.00 SGD, $1.23 to £1.00 , $0.72 to 1.00 AUD, $0.13 to 1.00 HKD, $0.74 to 1.00 CAD and $0.01 to 1.00 JPY, respectively, as of December 31, 2016 . (b) As of December 31, 2016 , the weighted-average interest rate reflecting interest rate swaps was 2.45% (U.S. dollar), 1.89% (British pound sterling), 1.90% (Singapore dollar), 1.88% (Canadian dollar) and 2.23% (Total). See Note 14 for further discussion on interest rate swaps. (c) 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 . (d) 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. (6) On January 20, 2017, the Company paid this unsecured note in full at maturity. (7) Based on exchange rates of $1.23 to £1.00 as of December 31, 2016 and $1.47 to £1.00 as of December 31, 2015 . (8) Based on exchange rate of $1.05 to €1.00 as of December 31, 2016 . Global Revolving Credit Facility On January 15, 2016, we 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 has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to up to $2.5 billion , subject to the receipt of lender commitments and other conditions precedent. The refinanced facility matures on January 15, 2020 , with two six -month extension options available. The interest rate for borrowings under the 2016 global revolving credit facility equals the applicable index plus a margin which is based on the credit ratings of our long-term debt and is currently 100 basis points. An annual facility fee on the total commitment amount of the facility, based on the credit ratings of our long-term debt, currently 20 basis points, is payable quarterly. Funds may be drawn in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, British pound sterling and Japanese yen. As of December 31, 2016 , interest rates are based on 1-month LIBOR, 1-month GBP LIBOR, 1-month EURIBOR, 1-month HIBOR, 1-month JPY LIBOR, 1-month SOR and 1-month CDOR, plus a margin of 1.00% . We have used and intend to use available borrowings under the 2016 global revolving credit facility to acquire additional properties, fund development opportunities and for general working capital and other corporate purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or equity securities. As of December 31, 2016 , we have capitalized approximately $10.9 million of financing costs, net of accumulated amortization, related to the 2016 global revolving credit facility. As of December 31, 2016 , approximately $210.1 million was drawn under the 2016 global revolving credit facility and $20.0 million of letters of credit were issued. 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, 2016 , we were in compliance with all of such covenants. Unsecured Term Loans On January 15, 2016, we refinanced our 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, which we refer to as the 5 -Year Term Loan, and (ii) a $300 million 7 -year senior unsecured term loan, which we refer to as the 7-Year Term Loan. The 2016 term loan agreement replaced the $1.0 billion term loan agreement executed on April 16, 2012, as amended. The 5 -Year Term Loan matures on January 15, 2021 and the 7 -Year Term Loan matures on 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 $1.55 billion to up to $1.8 billion , subject to receipt of lender commitments and other conditions precedent. Interest rates are based on our senior unsecured debt ratings and are currently 110 basis points and 155 basis points over the applicable index for floating rate advances for the 5 -Year Term Loan and the 7 -Year Term Loan, respectively. Funds may be drawn in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, British pound sterling and Japanese yen. Based on exchange rates in effect at December 31, 2016 , the balance outstanding is approximately $1.5 billion , excluding deferred financing costs. We have used borrowings under the term loan for acquisitions, repayment of indebtedness, development, working capital and general corporate purposes. The covenants under the term loans are consistent with our 2016 global revolving credit facility and, as of December 31, 2016 , we were in compliance with all of such covenants. As of December 31, 2016 , we have capitalized approximately $6.1 million , net of accumulated amortization, of financing costs related to the 2016 unsecured term loans. 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 had 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. On January 6, 2016, we repaid the $25.0 million of 9.68% Series C unsecured notes under the Prudential shelf facility at maturity. On January 20, 2017, we repaid the $50.0 million of 5.73% Series E unsecured notes under the Prudential shelf facility at maturity. As of December 31, 2016 and 2015 , there was $50.0 million and $75.0 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.1 to 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 2016 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, which we refer to as 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 . We used the net proceeds from the sale of the 2020 Notes to temporarily repay all or a portion of our borrowings under our revolving credit facility, to acquire additional properties, to fund development and redevelopment opportunities and for general corporate purposes. 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, 2016 , 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, which we refer to as 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 . We used the net proceeds from this offering to temporarily repay borrowings under our revolving credit facility, to acquire additional properties, to fund development and redevelopment opportunities and for general working capital purposes. 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, 2016 , 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, which we refer to as 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, 2016 , 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, which we refer to as 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 unsecured debt. At December 31, 2016 , 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, which we refer to as the 2025 Notes. The 2025 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 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 unsecured debt. At December 31, 2016 , 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, which we refer to as 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, 2016 , 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, which we refer to as the 3.400% 2020 notes, and $450.0 million aggregate principal amount of its 4.750% Notes due 2025, which we refer to as the 4.750% 2025 notes, fully and unconditionally guaranteed by Digital Realty Trust, Inc. and Digital Realty Trust, L.P. The terms of the 3.400% 2020 notes and 4.750% 2025 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 3.400% 2020 notes and 4.750% 2025 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 3.400% 2020 notes and 4.750% 2025 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. 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 3.400% 2020 notes and 4.750% 2025 notes became the senior unsecured obligations of the Operating Partnership and remained guaranteed by Digital Realty Trust, Inc. The indenture governing the 3.400% 2020 notes and 4.750% 2025 notes contain 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, 2016, we were in compliance with all of such covenants. 2.625% Notes due 2024 On April 15, 2016, Digital Euro Finco, LLC, a wholly owned indirect finance subsidiary of Digital Realty Trust, L.P., issued and sold €600.0 million aggregate principal amount of its 2.625% Guaranteed Notes due 2024, which we refer to as the 2024 notes. The 2024 notes are senior unsecured obligations of Digital Euro Finco, LLC and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. and Digital Realty Trust, L.P. Net proceeds from the offering were approximately €594.0 million (or approximately $670.3 million based on the exchange rate as of April 15, 2016) after deducting managers’ discounts and estimated offering expenses. We used the net proceeds from the offering of the 2024 notes to temporarily repay borrowings under our 2016 global revolving credit facility. The indenture governing the 2024 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, 2016 , we were in compliance with each of these financial covenants. The table below summarizes our debt maturities and principal payments as of December 31, 2016 (in thousands): Global Revolving (1) Unsecured Prudential (2) Senior Notes Mortgage Total 2017 $ — $ — $ 50,000 $ — $ 546 $ 50,546 2018 — — — — 593 593 2019 — — — — 644 644 2020 210,077 — — 1,000,000 1,133 1,211,210 2021 — 1,188,498 — 400,000 — 1,588,498 Thereafter — 300,000 — 2,744,820 — 3,044,820 Subtotal $ 210,077 $ 1,488,498 $ 50,000 $ 4,144,820 $ 2,916 $ 5,896,311 Unamortized discount — — — (15,649 ) — (15,649 ) Unamortized premium — — — — 334 334 Total $ 210,077 $ 1,488,498 $ 50,000 $ 4,129,171 $ 3,250 $ 5,880,996 (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. (2) On January 20, 2017, we repaid the $50.0 million of 5.73% Series E unsecured notes under the Prudential shelf facility at maturity.

Income per Share

Income per Share	12 Months Ended
	Dec. 31, 2016
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, 2016 2015 2014 Net income available to common stockholders $ 332,088 $ 217,266 $ 132,718 Weighted average shares outstanding—basic 149,953,662 138,247,606 133,369,047 Potentially dilutive common shares: Stock options 9,726 20,424 30,434 Unvested incentive units 71,031 95,746 90,449 Forward equity offering 3,990 — — Market performance-based awards 641,279 501,645 147,305 Weighted average shares outstanding—diluted 150,679,688 138,865,421 133,637,235 Income per share: Basic $ 2.21 $ 1.57 $ 1.00 Diluted $ 2.20 $ 1.56 $ 0.99 We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2016 2015 2014 Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. 2,406,018 2,658,291 2,753,614 Potentially dilutive 2029 Debentures — — 1,957,963 Potentially dilutive Series E Cumulative Redeemable Preferred Stock 2,880,254 4,301,438 4,956,175 Potentially dilutive Series F Cumulative Redeemable Preferred Stock 1,939,905 2,727,962 3,143,195 Potentially dilutive Series G Cumulative Redeemable Preferred Stock 2,652,503 3,730,042 4,297,805 Potentially dilutive Series H Cumulative Redeemable Preferred Stock 3,886,966 5,465,987 4,320,495 Potentially dilutive Series I Cumulative Redeemable Preferred Stock 2,655,607 1,235,063 — 16,421,253 20,118,783 21,429,247

Income per Unit

Income per Unit	12 Months Ended
	Dec. 31, 2016
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, 2016 2015 2014 Net income available to common unitholders $ 337,386 $ 220,343 $ 135,485 Weighted average units outstanding—basic 152,359,680 140,905,897 136,122,661 Potentially dilutive common units: Stock options 9,726 20,424 30,434 Unvested incentive units 71,031 95,746 90,449 Forward equity offering 3,990 — — Market performance-based awards 641,279 501,645 147,305 Weighted average units outstanding—diluted 153,085,706 141,523,712 136,390,849 Income per unit: Basic $ 2.21 $ 1.56 $ 1.00 Diluted $ 2.20 $ 1.55 $ 0.99 We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive: Year Ended December 31, 2016 2015 2014 Potentially dilutive 2029 Debentures — — 1,957,963 Potentially dilutive Series E Cumulative Redeemable Preferred Units 2,880,254 4,301,438 4,956,175 Potentially dilutive Series F Cumulative Redeemable Preferred Units 1,939,905 2,727,962 3,143,195 Potentially dilutive Series G Cumulative Redeemable Preferred Units 2,652,503 3,730,042 4,297,805 Potentially dilutive Series H Cumulative Redeemable Preferred Units 3,886,966 5,465,987 4,320,495 Potentially dilutive Series I Cumulative Redeemable Preferred Units 2,655,607 1,235,063 — 14,015,235 17,460,492 18,675,633

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
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. As such, no provision for federal income taxes has been included in the accompanying consolidated financial statements for the years ended December 31, 2016 , 2015 and 2014 . 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 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, 2016 , 2015 and 2014 . 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 a 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, 2016 , 2015 and 2014 . As of December 31, 2016 , we had deferred tax liabilities net of deferred tax assets of approximately $153.8 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 the tax basis and book basis of the assets acquired in the Sentrum Portfolio acquisition in 2012 and the European Portfolio Acquisition in July 2016. The valuation allowance at December 31, 2016 and 2015 relate primarily to certain foreign jurisdiction and net operating loss carryforwards from the Telx Acquisition 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, 2016 and 2015 . Deferred income tax assets and liabilities as of December 31, 2016 and 2015 were as follows (in thousands): 2016 2015 Gross deferred income tax assets: Net operating loss carryforwards $ 98,054 $ 123,091 Basis difference - real estate property 156,394 103,789 Basis difference - intangibles 2,225 2,002 Other - temporary differences 31,503 9,406 Total gross deferred income tax assets 288,176 238,288 Valuation allowance (45,628 ) (35,266 ) Total deferred income tax assets, net of valuation allowance 242,548 203,022 Gross deferred income tax liabilities: Basis difference - real estate property 289,867 273,155 Basis difference - intangibles 64,714 14,374 Straight-line rent 5,172 14,269 Other - temporary differences 36,614 32,420 Total gross deferred income tax liabilities 396,367 334,218 Net deferred income tax liabilities $ 153,819 $ 131,196

Equity and Accumulated Other Co

Equity and Accumulated Other Comprehensive Loss, Net	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 . As of December 31, 2016 , shares of common stock having an aggregate offering price of $53.8 million remained available for offer and sale under the program. (b) Forward Equity Sale On May 20, 2016, Digital Realty Trust, Inc. completed an underwritten public offering of 12,500,000 shares of its common stock, all of which were offered in connection with forward sale agreements it entered into with certain financial institutions acting as forward purchasers. On June 2, 2016, the underwriters exercised their option in full to purchase an additional 1,875,000 shares of Digital Realty Trust, Inc.’s common stock from the forward purchasers. The forward purchasers borrowed and sold an aggregate of 14,375,000 shares of Digital Realty Trust, Inc.’s common stock in the public offering. Digital Realty Trust, Inc. did not receive any proceeds from the sale of our common stock by the forward purchasers in the public offering. On September 27, 2016, we physically settled a portion of the forward sale agreements by issuing an aggregate of 12,000,000 shares of our common stock to the forward purchasers in exchange for net proceeds of approximately $1.1 billion . Following such settlement, 2,375,000 shares of our common stock remain subject to the forward sale agreements, which are anticipated to be settled no later than May 19, 2017. (c) Redeemable Preferred Stock Redemption of Series E Preferred Stock On September 15, 2016, Digital Realty Trust, Inc. redeemed all 11,500,000 outstanding shares of its 7.00% series E cumulative redeemable preferred stock, or the series E preferred stock, at a redemption price of $25.35972 per share. The redemption price was equal to the original issuance price of $25.00 per share, plus accrued and unpaid dividends up to but not including the redemption date. Digital Realty Trust, Inc. funded the redemption with borrowings under the 2016 global revolving credit facility, which the Operating Partnership distributed to Digital Realty Trust, Inc. in connection with the Operating Partnership’s redemption of all 11,500,000 of its outstanding series E preferred units held by Digital Realty Trust, Inc. The excess of the redemption price over the carrying value of the series E preferred stock of approximately $10.3 million relates to the original issuance costs and has been reflected as reduction to net income available to common stockholders in the accompanying consolidated income statements for the year ended December 31, 2016 . 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 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 F cumulative redeemable preferred stock, 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 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 $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 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, which we repaid in full in October 2015. 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 was 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 F cumulative redeemable preferred stock, series G cumulative redeemable preferred stock and series H 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 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, 2016 and 2015 : December 31, 2016 December 31, 2015 Number of units Percentage of total Number of units Percentage of total Digital Realty Trust, Inc. 159,019,118 98.5 % 146,384,247 98.1 % Noncontrolling interests consist of: Common units held by third parties 1,141,814 0.7 % 1,421,314 1.0 % Incentive units held by employees and directors (see note 13) 1,333,849 0.8 % 1,412,012 0.9 % 161,494,781 100.0 % 149,217,573 100.0 % 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 $226.3 million and $192.7 million based on the closing market price of Digital Realty Trust, Inc. common stock on December 31, 2016 and 2015 , respectively. The following table shows activity for the noncontrolling interests in the Operating Partnership for the years ended December 31, 2016 , 2015 and 2014 : Common Incentive Total 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 ) Vesting of Class C Units (2007 Grant) — (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 Redemption of common units for shares of Digital Realty Trust, Inc. common stock (1) (279,500 ) — (279,500 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1) — (150,993 ) (150,993 ) Cancellation of incentive units held by employees and directors (1,416 ) (1,416 ) Grant of incentive units to employees and directors — 74,246 74,246 As of December 31, 2016 1,141,814 1,333,849 2,475,663 (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, 2016 , 2015 and 2014 (in thousands): Date dividend Dividend payable date Series E Preferred Stock Series F Preferred Stock Series G Preferred Stock Series H Preferred Stock Series I Preferred Stock Common February 11, 2014 March 31, 2014 $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 106,743 (1) April 29, 2014 June 30, 2014 5,031 3,023 3,672 7,104 (2) — 112,357 (1) July 21, 2014 September 30, 2014 5,031 3,023 3,672 6,730 — 112,465 (1) November 4, 2014 December 31, 2014 for Preferred Stock; 5,031 3,023 3,672 6,730 — 112,538 (1) $ 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 (3) May 12, 2015 June 30, 2015 5,031 3,023 3,672 6,730 — 115,458 (3) August 11, 2015 September 30, 2015 5,031 3,023 3,672 6,730 — 115,454 (3) November 12, 2015 December 31, 2015 for Preferred Stock; 5,031 3,023 3,672 6,730 5,600 (4) 124,417 (3) $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 470,748 February 17, 2016 March 31, 2016 $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ 3,969 $ 131,587 (5) May 11, 2016 June 30, 2016 5,031 3,023 3,672 6,730 3,969 131,607 (5) August 10, 2016 September 30, 2016 — (6) 3,023 3,672 6,730 3,969 131,657 (5) November 9, 2016 December 30, 2016 for Preferred Stock; — 3,023 3,672 6,730 3,969 141,882 (5) $ 10,062 $ 12,092 $ 14,688 $ 26,920 $ 15,876 $ 536,733 Annual rate of dividend per share $ 1.75000 $ 1.65625 $ 1.46875 $ 1.84375 $ 1.58800 (1) $ 3.320 annual rate of dividend per share. (2) Represents a pro rata dividend from and including the original issue date to and including June 30, 2014. (3) $3.400 annual rate of dividend per share. (4) Represents a pro rata dividend from and including the original issue date to and including December 31, 2015 . (5) $3.520 annual rate of dividend per share. (6) Redeemed on September 15, 2016 for $25.35972 per share, or a redemption price of $25.00 per share, plus accrued and unpaid dividends up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were deducted in the computation of net income available to common stockholders. 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 2016 global revolving credit facility to fund all or a portion of 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, 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 ) Net current period change (85,300 ) 41,395 (43,905 ) Reclassification to interest expense from interest rate swaps — 4,890 4,890 Balance as of December 31, 2016 $ (175,642 ) $ 40,037 $ (135,605 )

Capital and Accumulated Other C

Capital and Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2016
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 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 the 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 G cumulative redeemable preferred units, series H cumulative redeemable preferred units and series I cumulative redeemable preferred units. Except in connection with specified change of control transactions of the General Partner, the series F preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership. 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 the 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 F cumulative redeemable preferred units, series H cumulative redeemable preferred units and series I cumulative redeemable 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 the 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 F cumulative redeemable preferred units, series G cumulative redeemable preferred units and series I cumulative redeemable 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, the General Partner completed an underwritten public offering of 10,000,000 shares of series I cumulative redeemable preferred stock, or the 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 (see note 7), the Operating Partnership issued to the General Partner 10,000,000 series I cumulative redeemable preferred units, or the 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 F cumulative redeemable preferred units, series G cumulative redeemable preferred units and series H cumulative redeemable 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 $226.3 million and $192.7 million based on the closing market price of Digital Realty Trust, Inc.’s common stock on December 31, 2016 and 2015 , 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, 2016 , 2015 and 2014 (in thousands): Date distribution Distribution payable date Series E Preferred Units Series F Preferred Units Series G Preferred Units Series H Preferred Units Series I Preferred Units Common February 11, 2014 March 31, 2014 $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 109,378 (1) April 29, 2014 June 30, 2014 5,031 3,023 3,672 7,104 (2) — 115,008 (1) July 21, 2014 September 30, 2014 5,031 3,023 3,672 6,730 — 115,012 (1) November 4, 2014 December 31, 2014 for Preferred Units; 5,031 3,023 3,672 6,730 — 115,016 (1) $ 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 (3) May 12, 2015 June 30, 2015 5,031 3,023 3,672 6,730 — 117,938 (3) August 11, 2015 September 30, 2015 5,031 3,023 3,672 6,730 — 117,962 (3) November 12, 2015 December 31, 2015 for Preferred Units; 5,031 3,023 3,672 6,730 5,600 (4) 126,827 (3) $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 480,623 February 17, 2016 March 31, 2016 $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ 3,969 $ 131,587 (5) May 11, 2016 June 30, 2016 5,031 3,023 3,672 6,730 3,969 131,607 (5) August 10, 2016 September 30, 2016 — (6) 3,023 3,672 6,730 3,969 131,657 (5) November 9, 2016 December 31, 2016 for Preferred Units; — 3,023 3,672 6,730 3,969 144,193 (5) $ 10,062 $ 12,092 $ 14,688 $ 26,920 $ 15,876 $ 539,044 Annual rate of distribution per unit $1.750 $1.656 $1.469 $1.844 $1.588 (1) $ 3.320 annual rate of distribution per unit. (2) Represents a pro rata distribution from and including the original issue date to and including June 30, 2014. (3) $3.400 annual rate of distribution per unit. (4) Represents a pro rata distribution from and including the original issue date to and including December 31, 2015. (5) $3.520 annual rate of distribution per unit. (6) Redeemed on September 15, 2016 for $25.35972 per unit, or a redemption price of $25.00 per unit, plus accrued and unpaid distributions up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were deducted in the computation of net income available to common unitholders. (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, 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 ) Net current period change (86,621 ) 41,998 (44,623 ) Reclassification to interest expense from interest rate swaps — 4,968 4,968 Balance as of December 31, 2016 $ (180,504 ) $ 39,885 $ (140,619 )

Incentive Plan

Incentive Plan	12 Months Ended
	Dec. 31, 2016
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, 2016 , 3,965,682 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, 2016 . Unvested Long-term Incentive Units Units Weighted-Average Unvested, beginning of period 278,301 $ 62.85 Granted 29,544 87.18 Vested (175,975 ) 64.35 Cancelled or expired (3,048 ) 54.48 Unvested, end of period 128,822 66.58 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, 2016 , 2015 and 2014 related to long-term incentive units was approximately $4.5 million , $5.9 million and $12.6 million , respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $1.8 million , $1.2 million and $1.7 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $5.6 million and $9.9 million as of December 31, 2016 and 2015 , respectively. We expect to recognize this unearned compensation over the next 2.1 years on a weighted average basis. (b) Market Performance-Based Awards During the years ended December 31, 2016 , 2015 and 2014 , the Compensation Committee of the Board of Directors of Digital Realty Trust, Inc. 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 Digital Realty Trust, Inc.’s common stock (collectively, the “awards”), under the 2014 Incentive Award Plan and the Amended and Restated 2004 Incentive Award Plan 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, January 2015 or January 2016, 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 Digital Realty Trust, Inc.’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 awards 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. Following the completion of the Market Performance Period, the 2016 awards that have satisfied the market condition, if any, will vest 50% on February 27, 2019 and 50% on February 27, 2020, subject to continued employment through each applicable vesting date. In January 2017, the Compensation Committee determined that the high level had been achieved for the 2014 awards and, accordingly, 399,250 class D units (including 44,702 distribution equivalent units that immediately vested on December 31, 2016, upon the high level being achieved) and 138,567 RSUs, performance vested, subject to service-based vesting. Service-based vesting will be accelerated, in full or on a pro rata basis, as applicable, in the event of a change in control, termination of employment by the Company without cause, termination of employment by the award recipient for good reason, death, disability or retirement, in any case prior to the completion of the applicable Market Performance Period. However, vesting with respect to the market condition will continue to be measured based on RMS Relative Market Performance during the applicable three -year Market Performance Period (or, in the case of a change in control, shortened Market Performance Period). The fair values of the 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 valuations are summarized as follows: Award Date Expected Stock Price Volatility Risk-Free Interest Rate February 11, 2014 33% 0.67% February 24, 2015 24% 1.00% January 1, 2016 22% 1.32% February 16, 2016 26% 0.89% 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, 2016 , 1,683,182 Class D Units and 459,569 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 distribution 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, 2016 and 2015 was $25.6 million and $17.8 million, respectively, net of cancellations. We recognized compensation expense related to these awards of approximately $7.9 million , $4.1 million and $3.0 million in the years ended December 31, 2016 , 2015 and 2014 , respectively. We capitalized amounts relating to compensation expense of employees directly engaged in construction and leasing activities of approximately $1.9 million , $4.1 million and $1.4 million for the years ended December 31, 2016 , 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, 2016 : Year Ended December 31, 2016 Shares Weighted average exercise price Options outstanding, beginning of period 51,622 $ 41.04 Exercised (33,948 ) 40.68 Options outstanding, end of period 17,674 $ 41.73 Exercisable, end of period 17,674 $ 41.73 The following table summarizes information about stock options outstanding and exercisable as of December 31, 2016 : Options outstanding and exercisable Exercise price Number outstanding Weighted average remaining contractual life (years) Weighted average exercise price Aggregate intrinsic value $41.73 17,674 0.33 $ 41.73 $ 999,111 (d) Restricted Stock Below is a summary of our restricted stock activity for the year ended December 31, 2016 . Unvested Restricted Stock Shares Weighted-Average Unvested, beginning of period 271,901 $ 61.47 Granted (1) 162,685 83.58 Vested (120,169 ) 61.30 Cancelled or expired (39,775 ) 67.22 Unvested, end of period 274,642 73.81 (1) All restricted stock awards granted in 2016 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, 2016 , 2015 and 2014 related to grants of restricted stock was approximately $4.1 million , $2.5 million and $2.5 million , respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $2.8 million , $2.7 million and $2.7 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $14.7 million and $10.4 million as of December 31, 2016 and 2015 , respectively. We expect to recognize this unearned compensation over the next 2.9 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 $3.6 million , $3.4 million , and $2.8 million for the years ended December 31, 2016 , 2015 and 2014 , respectively.

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2016
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, 2016 , 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, 2016 or December 31, 2015 . 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 the U.S. LIBOR, GBP-LIBOR, SGD-SOR and CDOR-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 recent and pervasive disruptions in the financial markets have heightened the risks to these institutions. 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, 2016 and 2015, there were no ineffective portions to our interest rate swaps. As of December 31, 2016 and December 31, 2015 , 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 $ 206,000 (1) $ 206,000 (1) Swap 0.932 Jun 18, 2012 Apr 18, 2017 $ (90 ) (6) $ (416 ) 54,905 (1) 54,905 (1) Swap 0.670 Aug 6, 2012 Apr 6, 2017 16 (6) 69 — 75,000 (1) Swap 0.500 Aug 6, 2012 Apr 6, 2016 — (10 ) 75,000 (1) — Swap 1.016 Apr 6, 2016 Jan 6, 2021 1,911 (6) — 75,000 (1) — Swap 1.164 Jan 15, 2016 Jan 15, 2021 1,487 (6) — 300,000 (2) — Swap 1.435 Jan 15, 2016 Jan 15, 2023 8,128 (6) — 130,850 (3) 133,579 (3) Swap 0.925 Jul 17, 2012 Apr 18, 2017 18 (6) 1,500 209,132 (4) — Swap 0.792 Jan 15, 2016 Jan 15, 2019 (1,818 ) (6) — 73,294 (5) — Swap 0.779 Jan 15, 2016 Jan 15, 2021 1,556 (6) — $ 1,124,181 $ 469,484 $ 11,208 $ 1,143 (1) Represents portions of the U.S. dollar tranche of the 5 -Year Term Loan. (2) Represents the U.S. dollar tranche of the 7 -Year Term Loan. (3) Represents a portion of the Singapore dollar tranche of the 5 -Year Term Loan. Translation to U.S. dollars is based on exchange rates of $0.69 to 1.00 SGD as of December 31, 2016 and $0.70 to 1.00 SGD as of December 31, 2015 . (4) Represents the British pound sterling tranche of the 5 -Year Term Loan. Translation to U.S. dollars is based on exchange rate of $1.23 to £1.00 as of December 31, 2016 . (5) Represents the Canadian dollar tranche of the 5 -Year Term Loan. Translation to U.S. dollars is based on exchange rate of $0.74 to 1.00 CAD as of December 31, 2016 . (6) Balance recorded in other assets in the consolidated balance sheets if positive and recorded in accounts payable and other accrued liabilities in the consolidated balance sheets if negative. 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, 2016 , we estimate that an additional $3.8 million will be reclassified as an increase to interest expense during the year ending December 31, 2017, when the hedged forecasted transactions impact earnings. Non-designated Hedges Derivatives not designated as hedges are derivatives that do not meet the criteria for hedge accounting under GAAP or which we have elected to not designate as hedges. We do not use these derivatives for speculative purposes, but instead they are used to manage our exposure to foreign exchange rates. Changes in the fair value of derivatives not designated as hedges are recorded directly in interest and other income in our consolidated income statements. The Company recorded a loss of $3.1 million on the non-designated hedges for the year ended December 31, 2016 . The Company had no non-designated hedges in place during the year ended December 31, 2015 . As of December 31, 2016 , we had no non-designated hedges in place. During the three months ended June 30, 2016, we entered into a series of forward contracts pursuant to which we agreed to sell an amount of foreign currency for an agreed upon amount of USD. These forward contracts were executed to manage foreign currency exposures associated with certain transactions. On July 1, 2016, the forward contracts still in place met the criteria for net investment hedge accounting. As of December 31, 2016 , the Company had the following outstanding derivatives that were designated as hedges under qualifying hedging relationships, which is recorded in other assets in the consolidated balance sheets (notional and fair value amounts in thousands): Foreign Currency Derivative Number of Instruments Notional Amount Sold Notional Amount Purchased Maturity Date Fair Value Currency forward contracts 4 GBP 357,299 USD 518,469 12/15/2017 $ 73,498

Fair Value of Instruments

Fair Value of Instruments	12 Months Ended
	Dec. 31, 2016
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, 2016 and December 31, 2015 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 and foreign currency contracts 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, 2016 and December 31, 2015 , the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured term loan, unsecured senior notes and mortgage loans were as follows (in thousands): Categorization As of December 31, 2016 As of December 31, 2015 Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Global revolving credit facility (1)(5) Level 2 $ 210,077 $ 210,077 $ 967,884 $ 967,884 Unsecured term loan (2)(6) Level 2 1,488,498 1,488,498 924,568 924,568 Unsecured senior notes (3)(4)(7) Level 2 4,428,074 4,179,171 3,868,979 3,738,606 Mortgage loans (3)(8) Level 2 3,217 3,250 313,717 303,183 $ 6,129,866 $ 5,880,996 $ 6,075,148 $ 5,934,241 (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 5.875% 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 3.950% 2022 Notes, 3.625% 2022 Notes, 2023 Notes, 2024 Notes, 4.750% 2025 Notes and 4.250% 2025 Notes are valued based on quoted market prices. (4) The carrying value of the 5.875% 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 3.625% 2022 Notes, 3.950% 2022 Notes, 2023 Notes, 2024 Notes and 4.250% 2025 Notes are net of discount of $15.6 million and $17.9 million in the aggregate as of December 31, 2016 and December 31, 2015 , respectively. (5) The estimated fair value and carrying value are exclusive of deferred financing costs of $10.9 million and $7.6 million as of December 31, 2016 and December 31, 2015 , respectively. (6) The estimated fair value and carrying value are exclusive of deferred financing costs of $6.1 million and $1.3 million as of December 31, 2016 and December 31, 2015 , respectively. (7) The estimated fair value and carrying value are exclusive of deferred financing costs of $25.4 million and $26.0 million as of December 31, 2016 and December 31, 2015 , respectively. (8) The estimated fair value and carrying value are exclusive of deferred financing costs of $0.0 million and $0.3 million as of December 31, 2016 and December 31, 2015 , respectively.

Tenant Leases

Tenant Leases	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Tenant Leases	Tenant Leases The future minimum lease payments to be received (excluding operating expense reimbursements) by us as of December 31, 2016 , under non-cancelable operating leases are as follows (in thousands): 2017 $ 1,608,054 2018 1,313,925 2019 1,112,743 2020 876,231 2021 722,729 Thereafter 2,387,481 Total $ 8,021,163

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
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 and European Portfolio Acquisition, leases relating to operating facilities, offices, and equipment under various lease agreements expire during the years ending December 2017 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 $83.6 million , $24.6 million , and $16.2 million for the years ended December 31, 2016 , 2015 and 2014 respectively. The minimum commitment under these leases, excluding the fully prepaid ground leases, as of December 31, 2016 was as follows (in thousands): 2017 $ 70,079 2018 73,474 2019 78,578 2020 81,403 2021 81,803 Thereafter 665,803 Total $ 1,051,140 (b) Capital leases Future minimum lease payments and their present value for property under capital leases as of December 31, 2016 , are as follows: 2017 $ 10,263 2018 10,268 2019 11,909 2020 12,004 2021 12,099 Thereafter 196,299 252,842 Less amount representing interest (90,658 ) Present value $ 162,184 (c) Contingent liabilities As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined 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 $34.5 million based on the exchange rate as of December 31, 2016 ). As of December 31, 2014, $12.6 million had been accrued related to this earnout agreement, which was subsequently paid in 2015. During 2015 and 2016, the remaining performance targets were achieved and the Company accrued an additional $23.8 million . The remaining earnout payments were made in 2016 per the terms of the earnout agreement. The amounts accrued were 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 its 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 acre, respectively, plus additional adjustments as provided in the lease. As of December 31, 2016 the tenant had yet to exercise its option. 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 (or approximately $45.9 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 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 $0.0 million , $43.0 million and $8.4 million for the years ended December 31, 2016 , 2015 and 2014 , respectively. (d) 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, 2016 , we had open commitments related to construction contracts of approximately $320.9 million . (e) Legal Proceedings Although the Company is involved in legal proceedings arising in the ordinary course of business, as of December 31, 2016 , 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.) (unaudited)	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 . 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 $ 576,787 $ 546,293 $ 514,934 $ 504,199 Net income 96,140 222,435 50,944 62,333 Net income attributable to Digital Realty Trust, Inc. 95,075 219,188 50,375 61,549 Preferred stock dividends and issuance costs 17,393 31,858 22,424 22,424 Net income available to common stockholders 77,682 187,330 27,951 39,125 Basic net income per share available to $ 0.49 $ 1.27 $ 0.19 $ 0.27 Diluted net income per share available to $ 0.49 $ 1.25 $ 0.19 $ 0.27 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 (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

Quarterly Financial Informati27

Quarterly Financial Information (Digital Realty Trust, L.P.)	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 . 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 $ 576,787 $ 546,293 $ 514,934 $ 504,199 Net income 96,140 222,435 50,944 62,333 Net income attributable to Digital Realty Trust, Inc. 95,075 219,188 50,375 61,549 Preferred stock dividends and issuance costs 17,393 31,858 22,424 22,424 Net income available to common stockholders 77,682 187,330 27,951 39,125 Basic net income per share available to $ 0.49 $ 1.27 $ 0.19 $ 0.27 Diluted net income per share available to $ 0.49 $ 1.25 $ 0.19 $ 0.27 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 (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
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, 2016 and 2015 . 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 $ 576,787 $ 546,293 $ 514,934 $ 504,199 Net income 96,140 222,435 50,944 62,333 Net income attributable to Digital Realty Trust, L.P. 96,229 222,212 50,832 62,212 Preferred unit distributions and issuance costs associated 17,393 31,858 22,424 22,424 Net income available to common unitholders 78,836 190,354 28,408 39,788 Basic net income per unit available to common unitholders $ 0.49 $ 1.27 $ 0.19 $ 0.27 Diluted net income per unit available to common unitholders $ 0.49 $ 1.25 $ 0.19 $ 0.27 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) (16,785 ) 56,689 137,997 122,325 Net income (loss) 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 (loss) available to common unitholders (40,959 ) 38,116 119,432 103,754 Basic net income (loss) per unit available to common unitholders $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income (loss) per unit available to common unitholders $ (0.28 ) $ 0.27 $ 0.86 $ 0.75

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In addition to other subsequent events discussed elsewhere within the footnotes, the following subsequent event warranted disclosure: On March 1, 2017, the Company declared the following dividends per share. The Operating Partnership will make an equivalent distribution per unit. Share / Unit Class Series F Series G Series H Series I Preferred Stock and Unit Common stock Dividend and distribution amount $ 0.414063 $ 0.367188 $ 0.460938 $ 0.396875 $ 0.930000 Dividend and distribution payable date March 31, 2017 March 31, 2017 March 31, 2017 March 31, 2017 March 31, 2017 Dividend and distribution payable to holders of record on March 15, 2017 March 15, 2017 March 15, 2017 March 15, 2017 March 15, 2017 Annual equivalent rate of dividend and distribution $ 1.656 $ 1.469 $ 1.844 $ 1.588 $ 3.720

Schedule III Properties And Acc

Schedule III Properties And Accumulated Depreciation	12 Months Ended
	Dec. 31, 2016
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
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 12,246 — 1,942 — 36,430 38,372 (15,119 ) 2002 (A) 2323 Bryan Street Dallas — 1,838 — 77,604 49,960 — 1,838 — 127,564 129,402 (60,995 ) 2002 (A) 300 Boulevard East New York — 5,140 — 48,526 61,695 — 5,140 — 110,221 115,361 (61,473 ) 2002 (A) 2334 Lundy Place Silicon Valley — 3,607 — 23,008 67 — 3,607 — 23,075 26,682 (9,739 ) 2002 (A) 34551 Ardenwood Boulevard 1-4 Silicon Valley — 15,330 — 32,419 10,583 — 15,330 — 43,002 58,332 (16,861 ) 2003 (A) 2440 Marsh Lane Dallas — 1,477 — 10,330 72,349 — 1,477 — 82,679 84,156 (55,085 ) 2003 (A) 2010 East Centennial Circle Phoenix — — 1,477 16,472 (98 ) — — 1,322 16,529 17,851 (6,963 ) 2003 (A) 375 Riverside Parkway Atlanta — 1,250 — 11,578 31,541 — 1,250 — 43,119 44,369 (26,328 ) 2003 (A) 4849 Alpha Road Dallas — 2,983 — 10,650 43,322 — 2,983 — 53,972 56,955 (25,219 ) 2004 (A) 600 West Seventh Street Los Angeles — 18,478 — 50,824 56,357 — 18,478 — 107,181 125,659 (58,833 ) 2004 (A) 2045 & 2055 LaFayette Street Silicon Valley — 6,065 — 43,817 20 — 6,065 — 43,837 49,902 (17,228 ) 2004 (A) 11830 Webb Chapel Road Dallas — 5,881 — 34,473 2,345 — 5,881 — 36,818 42,699 (15,353 ) 2004 (A) 150 South First Street Silicon Valley — 2,068 — 29,214 1,499 — 2,068 — 30,713 32,781 (11,735 ) 2004 (A) 200 Paul Avenue San Francisco — 14,427 — 75,777 93,524 — 14,427 — 169,301 183,728 (72,412 ) 2004 (A) 1100 Space Park Drive Silicon Valley — 5,130 — 18,206 34,917 — 5,130 — 53,123 58,253 (29,167 ) 2004 (A) 3015 Winona Avenue Los Angeles — 6,534 — 8,356 6 — 6,534 — 8,362 14,896 (3,462 ) 2004 (A) 1125 Energy Park Drive Minneapolis — 2,775 — 10,761 (5,701 ) (5,900 ) 2,775 — 5,060 7,835 (3,945 ) 2005 (A) 350 East Cermak Road Chicago — 8,466 — 103,232 224,747 — 8,620 — 327,825 336,445 (185,776 ) 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 — 11,561 138 — 2,181 — 11,699 13,880 (4,862 ) 2005 (A) 2401 Walsh Street Silicon Valley — 5,775 — 19,267 37 — 5,775 — 19,304 25,079 (7,589 ) 2005 (A) 2403 Walsh Street Silicon Valley — 5,514 — 11,695 48 — 5,514 — 11,743 17,257 (4,908 ) 2005 (A) 200 North Nash Street Los Angeles — 4,562 — 12,503 232 — 4,562 — 12,735 17,297 (5,809 ) 2005 (A) 731 East Trade Street Charlotte 2,916 (1) 1,748 — 5,727 257 — 1,748 — 5,984 7,732 (2,233 ) 2005 (A) 113 North Myers Charlotte — 1,098 — 3,127 2,069 — 1,098 — 5,196 6,294 (2,186 ) 2005 (A) 125 North Myers Charlotte — 1,271 — 3,738 6,180 — 1,271 — 9,918 11,189 (7,186 ) 2005 (A) Paul van Vlissingenstraat 16 Amsterdam — — — 15,255 22,772 — — — 38,027 38,027 (14,472 ) 2005 (A) 600-780 S. Federal Chicago — 7,849 — 27,881 33,802 — 7,849 — 61,683 69,532 (15,304 ) 2005 (A) 115 Second Avenue Boston — 1,691 — 12,569 11,458 — 1,691 — 24,027 25,718 (14,222 ) 2005 (A) Chemin de l’Epinglier 2 Geneva — — — 20,071 (2,171 ) — — — 17,900 17,900 (6,585 ) 2005 (A) 7500 Metro Center Drive Austin — 1,177 — 4,877 68,296 — 1,177 — 73,173 74,350 (8,207 ) 2005 (A) 3 Corporate Place New York — 1,543 — 12,678 85,251 — 1,543 — 97,929 99,472 (76,002 ) 2005 (A) 1115 Centennial Avenue New York — 581 — — 42,222 — 581 — 42,222 42,803 — 2005 (C) 4025 Midway Road Dallas — 2,196 — 14,037 28,773 — 2,196 — 42,810 45,006 (27,510 ) 2006 (A) Clonshaugh Industrial Estate Dublin — — 1,444 5,569 963 — — 87 7,889 7,976 (4,804 ) 2006 (A) 6800 Millcreek Drive Toronto — 1,657 — 11,352 2,279 — 1,657 — 13,631 15,288 (5,904 ) 2006 (A) 101 Aquila Way Atlanta — 1,480 — 34,797 45 — 1,480 — 34,842 36,322 (12,631 ) 2006 (A) Digital Houston Houston — 6,965 — 23,492 145,603 — 6,965 — 169,095 176,060 (46,323 ) 2006 (A) 120 E Van Buren Phoenix — 4,524 — 157,822 109,068 — 4,524 — 266,890 271,414 (115,072 ) 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 (2,374 ) — — — 11,076 11,076 (4,168 ) 2006 (A) Clonshaugh Industrial Estate II Dublin — — — — 72,561 — — — 72,561 72,561 (35,184 ) 2006 (C) 600 Winter Street Boston — 1,429 — 6,228 456 — 1,429 — 6,684 8,113 (2,134 ) 2006 (A) 2300 NW 89th Place Miami — 1,022 — 3,767 19 — 1,022 — 3,786 4,808 (1,568 ) 2006 (A) 2055 East Technology Circle Phoenix — — — 8,519 27,622 — — — 36,141 36,141 (24,871 ) 2006 (A) Unit 9, Blanchardstown Corporate Park Dublin — 1,927 — 40,024 14,822 — 1,523 — 55,250 56,773 (18,759 ) 2006 (A) 111 8th Avenue New York — — — 17,688 18,687 — — — 36,375 36,375 (28,345 ) 2006 (A) 8100 Boone Boulevard N. Virginia — — — 158 1,211 — — — 1,369 1,369 (1,200 ) 2006 (A) 21110 Ridgetop Circle N. Virginia — 2,934 — 14,311 1,307 — 2,934 — 15,618 18,552 (5,246 ) 2007 (A) 3011 Lafayette Street Silicon Valley — 3,354 — 10,305 49,447 — 3,354 — 59,752 63,106 (44,952 ) 2007 (A) 44470 Chilum Place N. Virginia — 3,531 — 37,360 1 — 3,531 — 37,361 40,892 (10,092 ) 2007 (A) 43881 Devin Shafron Drive N. Virginia — 4,653 — 23,631 92,840 — 4,653 — 116,471 121,124 (80,752 ) 2007 (A) 43831 Devin Shafron Drive N. Virginia — 3,027 — 16,247 1,366 — 3,027 — 17,613 20,640 (5,181 ) 2007 (A) 43791 Devin Shafron Drive N. Virginia — 3,490 — 17,444 76,648 — 3,490 — 94,092 97,582 (46,167 ) 2007 (A) Mundells Roundabout London — 31,354 — — 38,956 — 19,670 — 50,640 70,310 (10,514 ) 2007 (C) 1 Solutions Parkway St. Louis — 3,301 — 20,639 1,460 — 3,301 — 22,099 25,400 (6,304 ) 2007 (A) 1500 Space Park Drive Silicon Valley — 6,732 — 6,325 46,136 — 4,106 — 55,087 59,193 (45,440 ) 2007 (A) Cressex 1 London — 3,629 — 9,036 17,681 — 2,372 — 27,974 30,346 (15,888 ) 2007 (A) Naritaweg 52 Amsterdam — — 1,192 23,441 (6,745 ) — — 860 17,028 17,888 (4,643 ) 2007 (A) 1 St. Anne’s Boulevard London — 1,490 — 1,045 (860 ) — 944 — 731 1,675 (168 ) 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 31,421 — 629 — 32,409 33,038 (4,463 ) 2007 (A) 3 St. Anne’s Boulevard London — 22,079 — 16,351 74,745 — 13,870 — 99,305 113,175 (43,075 ) 2007 (A) 365 South Randolphville Road New York — 3,019 — 17,404 285,554 — 3,019 — 302,958 305,977 (90,405 ) 2008 (A) 701 & 717 Leonard Street Dallas — 2,165 — 9,934 835 — 2,165 — 10,769 12,934 (2,563 ) 2008 (A) Manchester Technopark Manchester — — — 23,918 (8,672 ) — — — 15,246 15,246 (3,720 ) 2008 (A) 1201 Comstock Street Silicon Valley — 2,093 — 1,606 26,767 — 3,398 — 27,068 30,466 (16,276 ) 2008 (A) 1550 Space Park Drive Silicon Valley — 2,301 — 766 2,625 — 2,056 — 3,636 5,692 — 2008 (A) 1525 Comstock Street Silicon Valley — 2,293 — 16,216 30,780 — 2,061 — 47,228 49,289 (27,042 ) 2008 (C) 43830 Devin Shafron Drive N. Virginia — 5,509 — — 73,667 — 5,509 — 73,667 79,176 (30,048 ) 2009 (C) 1232 Alma Road Dallas — 2,267 — 3,740 63,893 — 2,266 — 67,634 69,900 (32,135 ) 2009 (A) 900 Quality Way Dallas — 1,446 — 1,659 69,396 — 1,446 — 71,055 72,501 (13,853 ) 2009 (A) 1210 Integrity Drive Dallas — 2,041 — 3,389 100,985 — 3,796 — 102,619 106,415 (29 ) 2009 (A) 907 Security Row Dallas — 333 — 344 98,890 — 2,112 — 97,455 99,567 (2,790 ) 2009 (A) 908 Quality Way Dallas — 6,730 — 4,493 13,778 — 2,067 — 22,934 25,001 (15,103 ) 2009 (A) 904 Quality Way Dallas — 760 — 744 6,818 — 1,151 — 7,171 8,322 (814 ) 2009 (A) 1215 Integrity Drive Dallas — — — — 44,353 — 1,921 — 42,432 44,353 (11,315 ) 2009 (C) 1350 Duane & 3080 Raymond Silicon Valley — 7,081 — 69,817 61 — 7,081 — 69,878 76,959 (12,978 ) 2009 (A) 45901 & 45845 Nokes Boulevard N. Virginia — 3,437 — 28,785 450 — 3,437 — 29,235 32,672 (5,737 ) 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 (4,389 ) 2009 (A) 60 & 80 Merritt New York — 3,418 — 71,477 92,086 — 3,418 — 163,563 166,981 (28,851 ) 2010 (A) 55 Middlesex Boston — 9,975 — 68,363 8,793 — 9,975 — 77,156 87,131 (19,299 ) 2010 (A) 128 First Avenue Boston — 5,465 — 185,348 31,509 — 5,465 — 216,857 222,322 (53,084 ) 2010 (A) Cateringweg 5 Amsterdam — — 3,518 3,517 35,249 — — 3,023 39,261 42,284 (5,866 ) 2010 (A) 1725 Comstock Street Silicon Valley — 3,274 — 6,567 38,002 — 3,274 — 44,569 47,843 (19,201 ) 2010 (A) 3105 Alfred Street Silicon Valley — 6,533 — 3,725 58,227 — 6,801 — 61,684 68,485 (22,043 ) 2010 (A) 365 Main Street San Francisco — 22,854 — 158,709 23,962 — 22,854 — 182,671 205,525 (40,034 ) 2010 (A) 720 2nd Street San Francisco — 3,884 — 116,861 9,644 — 3,884 — 126,505 130,389 (24,909 ) 2010 (A) 2260 East El Segundo Los Angeles — 11,053 — 51,397 14,310 — 11,053 — 65,707 76,760 (15,223 ) 2010 (A) 2121 South Price Road Phoenix — 7,335 — 238,452 203,628 — 7,335 — 442,080 449,415 (88,460 ) 2010 (A) 4030 Lafayette N. Virginia — 2,492 — 16,912 3,871 — 2,492 — 20,783 23,275 (4,646 ) 2010 (A) 4040 Lafayette N. Virginia — 1,246 — 4,267 24,510 — 1,246 — 28,777 30,023 (2,762 ) 2010 (A) 4050 Lafayette N. Virginia — 1,246 — 4,371 35,110 — 1,246 — 39,481 40,727 (16,862 ) 2010 (A) 2805 Lafayette Street Silicon Valley — 8,976 — 18,155 128,065 — 8,294 — 146,902 155,196 (17,415 ) 2010 (A) 29A International Business Park Singapore — — — 137,545 190,103 — — — 327,648 327,648 (76,738 ) 2010 (A) 43940 Digital Loudoun Plaza N. Virginia — 6,229 — — 255,687 — 6,323 — 255,593 261,916 (42,870 ) 2011 (C) 44060 Digital Loudoun Plaza N. Virginia — 3,700 — — 187,637 — 3,441 — 187,896 191,337 (10,721 ) 2011 (C) 44100 Digital Loudoun Plaza N. Virginia — 3,700 — — 128,634 — 3,750 — 128,584 132,334 (1,139 ) 2011 (C) 43780 Digital Loudoun Plaza N. Virginia — 3,671 — — 52,214 — 4,633 — 51,252 55,885 (139 ) 2011 (C) 1-11 Templar Road Sydney — 6,937 — — 62,024 — 4,550 — 64,411 68,961 (9,346 ) 2011 (C) 13-23 Templar Road Sydney 4,236 — — 426 — 3,424 — 1,238 4,662 — 2011 (C) Fountain Court London — 7,544 — 12,506 90,541 — 6,145 — 104,446 110,591 (12,647 ) 2011 (A) 72 Radnor Drive Melbourne — 2,568 — — 53,962 — 1,805 — 54,725 56,530 (5,163 ) 2011 (C) 98 Radnor Drive Melbourne — 1,899 — — 36,164 — 1,375 — 36,688 38,063 (10,242 ) 2011 (C) 105 Cabot Street Boston — 2,386 — — 58,844 — 2,427 — 58,803 61,230 (5,502 ) 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 — — 57,103 — 1,689 — 57,103 58,792 (14,163 ) 2011 (C) 11085 Sun Center Drive Sacramento — 2,490 — 21,509 1 — 2,490 — 21,510 24,000 (3,253 ) 2011 (A) Profile Park Dublin — 6,288 — — 39,505 — 5,205 — 40,588 45,793 (1,321 ) 2011 (C) 1506 & 44874 Moran Road N. Virginia — 1,527 — — 17,185 — 1,115 — 17,597 18,712 (1,800 ) 2011 (A) 760 Doug Davis Drive Atlanta — 4,837 — 53,551 3,086 — 4,837 — 56,637 61,474 (9,862 ) 2011 (A) 360 Spear Street San Francisco — 19,828 — 56,733 (771 ) — 19,828 — 55,962 75,790 (10,532 ) 2011 (A) 2501 S. State Hwy 121 Dallas — 23,137 — 93,943 17,189 — 23,137 — 111,132 134,269 (22,488 ) 2012 (A) 9333 Grand Avenue Chicago — 5,686 — 14,515 76,939 — 1,205 — 95,935 97,140 (21,486 ) 2012 (A) 9355 Grand Avenue Chicago — — — 224,912 — 2,518 — 222,394 224,912 (7,330 ) 2012 (A) 9377 Grand Avenue Chicago — — — 75,821 — 2,248 — 73,573 75,821 (38 ) 2012 (A) 8025 North Interstate 35 Austin — 2,920 — 8,512 185 — 2,920 — 8,697 11,617 (1,305 ) 2012 (A) 850 E Collins Dallas — 1,614 — — 83,041 — 1,614 — 83,041 84,655 (10,903 ) 2012 (C) 950 E Collins Dallas — 1,546 — — 74,874 — 1,546 — 74,874 76,420 (6,421 ) 2012 (C) 400 S. Akard Dallas — 10,075 — 62,730 1,902 — 10,075 — 64,632 74,707 (7,910 ) 2012 (A) 410 Commerce Boulevard New York — — — — 29,784 — — — 29,784 29,784 (8,027 ) 2012 (C) Croydon London — 1,683 — 104,728 34,197 — 2,203 — 138,405 140,608 (17,161 ) 2012 (A) Watford London — — 7,355 219,273 (15,784 ) — — 6,043 204,801 210,844 (24,862 ) 2012 (A) Unit 21 Goldsworth Park London — 17,334 — 928,129 (218,845 ) — 12,327 — 714,291 726,618 (93,086 ) 2012 (A) 11900 East Cornell Denver — 3,352 — 80,640 2,059 — 3,352 — 82,699 86,051 (11,645 ) 2012 (A) 701 Union Boulevard New York — 10,045 — 6,755 26,299 — 10,045 — 33,054 43,099 — 2012 (A) 23 Waterloo Road Sydney — 7,112 — 3,868 (3,366 ) — 4,932 — 2,682 7,614 (310 ) 2012 (A) 1 Rue Jean-Pierre Paris — 9,621 — 35,825 (9,218 ) — 7,669 — 28,559 36,228 (4,143 ) 2012 (A) Liet-dit le Christ de Saclay Paris — 3,402 — 3,090 (1,317 ) — 2,712 — 2,463 5,175 (461 ) 2012 (A) 127 Rue de Paris Paris — 8,637 — 10,838 (3,950 ) — 6,886 — 8,639 15,525 (1,559 ) 2012 (A) 17201 Waterview Parkway Dallas — 2,070 — 6,409 (1 ) — 2,070 — 6,408 8,478 (825 ) 2013 (A) 1900 S. Price Road Phoenix — 5,380 — 16,975 486 — 5,398 — 17,443 22,841 (1,815 ) 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 88,306 — 6,014 — 90,363 96,377 (4,305 ) 2013 (A) 1500 Towerview Road Minneapolis — 10,190 20,054 3,191 — 10,190 — 23,245 33,435 (3,029 ) 2013 (A) Principal Park London — 11,837 — 101,915 — 12,044 — 101,708 113,752 (3,890 ) 2013 (C) MetCenter Business Park Austin — 8,604 20,314 395 — 8,604 — 20,709 29,313 (3,043 ) 2013 (A) Liverpoolweg 10 Amsterdam — 733 3,122 8,138 — 591 — 11,402 11,993 (1,183 ) 2013 (A) DePresident Amsterdam — 6,737 — 30,369 — 7,030 — 30,076 37,106 — 2013 (C) Digital Osaka Osaka — 9,649 — 43,689 — 9,043 — 44,295 53,338 — 2013 (C) Crawley 2 London — 24,305 — 1,227 — 18,502 — 7,030 25,532 (190 ) 2014 (C) Digital Deer Park 3 Melbourne — 1,600 — — 32 — 1,630 — 2 1,632 — 2015 (C) 3 Loyang Way Singapore — — — — 110,303 — — — 110,303 110,303 (320 ) 2015 (A) Digital Loudoun III N. Virginia — 43,000 — — 26,278 — 51,673 — 17,605 69,278 (10 ) 2015 (C) Digital Frankfurt Frankfurt — 5,543 — — 7,884 — 8,266 — 5,161 13,427 — 2015 (C) 56 Marietta Street Atlanta — 1,700 — 211,397 7,329 — 1,700 — 218,726 220,426 (10,882 ) 2015 (A) 2 Peekay Drive New York — — — 115,439 5,072 — — — 120,511 120,511 (8,637 ) 2015 (A) 100 Delawanna Avenue New York — 3,600 — 85,438 3,400 — 3,600 — 88,838 92,438 (3,985 ) 2015 (A) 60 Hudson Street New York — — — 32,280 4,249 — — — 36,529 36,529 (4,064 ) 2015 (A) 32 Avenue of the Americas New York — — — 30,980 1,368 — — — 32,348 32,348 (2,765 ) 2015 (A) 3433 S 120th Place Seattle — — — 11,688 1,387 — — — 13,075 13,075 (2,074 ) 2015 (A) 8435 Stemmons Freeway Dallas — — — 5,023 1,425 — — — 6,448 6,448 (841 ) 2015 (A) 2625 Walsh Avenue Silicon Valley — — — 4,276 2,648 — — — 6,924 6,924 (550 ) 2015 (A) 111 8th Avenue - Telx New York (2) — — — 42,454 5,433 — — 47,887 47,887 (6,506 ) 2015 (A) 350 East Cermak Road - Telx Chicago (2) — — — 13,933 2,180 — — — 16,113 16,113 (1,749 ) 2015 (A) 200 Paul Avenue - Telx San Francisco (2) — — — 6,719 1,160 — — — 7,879 7,879 (958 ) 2015 (A) 2323 Bryan Street - Telx Dallas (2) — — — 5,191 1,725 — — — 6,916 6,916 (853 ) 2015 (A) 600 W. 7th Street - Telx Los Angeles (2) — — — 3,689 498 — — — 4,187 4,187 (506 ) 2015 (A) 3825 NW Aloclek Place - Telx Portland (2) — — — 3,131 835 — — — 3,966 3,966 (364 ) 2015 (A) 120 E. Van Buren Street - Telx Phoenix (2) — — — 2,848 765 — — — 3,613 3,613 (383 ) 2015 (A) 36 NE 2nd Street - Telx Miami (2) — — — 1,842 649 — — — 2,491 2,491 (353 ) 2015 (A) 600-780 S. Federal Street - Telx Chicago (2) — — — 1,815 1,682 — — — 3,497 3,497 (293 ) 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 (2) — — — 476 40 — — — 516 516 (75 ) 2015 (A) 1100 Space Park Drive - Telx Silicon Valley (2) — — — 352 109 — — — 461 461 (61 ) 2015 (A) 300 Boulevard East - Telx New York (2) — — — 197 25 — — — 222 222 (57 ) 2015 (A) Science Park Amsterdam (3) — 665 — 75,095 15,671 — 631 — 90,800 91,431 (903 ) 2016 (A) Sovereign House London (3) — 7,943 — 44,114 (2,095 ) — 7,527 — 42,435 49,962 (2,188 ) 2016 (A) Amstel Business Park Amsterdam (3) — 2,991 — 58,138 2,184 — 2,840 — 60,473 63,313 (2,587 ) 2016 (A) Olivers Yard London (3) — 7,943 — 34,744 (2,099 ) — 7,527 — 33,061 40,588 (1,782 ) 2016 (A) Bonnington House London (3) — — — 14,127 (252 ) — — — 13,875 13,875 (1,094 ) 2016 (A) West Drayton London (3) — — — 10,135 (330 ) — — — 9,805 9,805 (832 ) 2016 (A) Lyonerstrasse Frankfurt (3) — — — 8,407 (393 ) — — — 8,014 8,014 (586 ) 2016 (A) Meridian Gate London (3) — — — 5,893 (255 ) — — — 5,638 5,638 (445 ) 2016 (A) NE Corner of Campbell Road and Ferris Road Dallas — 16,542 — — 230 — 16,772 — — 16,772 — 2016 (C) 9401 West Grand Avenue Chicago — 12,500 — — 973 — 13,430 — 43 13,473 — 2016 (C) Broad Run Technology Park N. Virginia — 18,019 — — 5,422 — 23,314 — 127 23,441 — 2016 (C) Other — 8,298 — 94,343 — — — 102,641 102,641 (14,485 ) 2,916 786,205 14,986 5,231,322 5,525,956 (5,900 ) 746,822 11,335 10,800,312 11,558,469 (2,668,509 ) (1) The balance shown excludes an unamortized premium of $334 . (2) Represents properties acquired in the Telx Acquisition. (3) Represents properties acquired in the European Portfolio Acquisition. (1) Tax Cost The aggregate gross cost of the Company’s properties for federal income tax purposes approximated $13.4 billion (unaudited) as of December 31, 2016 . (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, 2016 . Year Ended December 31, 2016 2015 2014 Balance, beginning of year $ 10,915,373 $ 9,982,612 $ 9,879,578 Additions during period (acquisitions and improvements) 760,051 1,133,263 560,307 Deductions during period (dispositions, impairments and assets held for sale) (116,955 ) (200,502 ) (457,273 ) Balance, end of year $ 11,558,469 $ 10,915,373 $ 9,982,612 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, 2016 . Year Ended December 31, 2016 2015 2014 Balance, beginning of year $ 2,251,268 $ 1,874,054 $ 1,565,996 Additions during period (depreciation and amortization expense) 461,506 429,057 413,652 Deductions during period (dispositions and assets held for sale) (44,265 ) (51,843 ) (105,594 ) Balance, end of year $ 2,668,509 $ 2,251,268 $ 1,874,054 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.
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
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 12,246 — 1,942 — 36,430 38,372 (15,119 ) 2002 (A) 2323 Bryan Street Dallas — 1,838 — 77,604 49,960 — 1,838 — 127,564 129,402 (60,995 ) 2002 (A) 300 Boulevard East New York — 5,140 — 48,526 61,695 — 5,140 — 110,221 115,361 (61,473 ) 2002 (A) 2334 Lundy Place Silicon Valley — 3,607 — 23,008 67 — 3,607 — 23,075 26,682 (9,739 ) 2002 (A) 34551 Ardenwood Boulevard 1-4 Silicon Valley — 15,330 — 32,419 10,583 — 15,330 — 43,002 58,332 (16,861 ) 2003 (A) 2440 Marsh Lane Dallas — 1,477 — 10,330 72,349 — 1,477 — 82,679 84,156 (55,085 ) 2003 (A) 2010 East Centennial Circle Phoenix — — 1,477 16,472 (98 ) — — 1,322 16,529 17,851 (6,963 ) 2003 (A) 375 Riverside Parkway Atlanta — 1,250 — 11,578 31,541 — 1,250 — 43,119 44,369 (26,328 ) 2003 (A) 4849 Alpha Road Dallas — 2,983 — 10,650 43,322 — 2,983 — 53,972 56,955 (25,219 ) 2004 (A) 600 West Seventh Street Los Angeles — 18,478 — 50,824 56,357 — 18,478 — 107,181 125,659 (58,833 ) 2004 (A) 2045 & 2055 LaFayette Street Silicon Valley — 6,065 — 43,817 20 — 6,065 — 43,837 49,902 (17,228 ) 2004 (A) 11830 Webb Chapel Road Dallas — 5,881 — 34,473 2,345 — 5,881 — 36,818 42,699 (15,353 ) 2004 (A) 150 South First Street Silicon Valley — 2,068 — 29,214 1,499 — 2,068 — 30,713 32,781 (11,735 ) 2004 (A) 200 Paul Avenue San Francisco — 14,427 — 75,777 93,524 — 14,427 — 169,301 183,728 (72,412 ) 2004 (A) 1100 Space Park Drive Silicon Valley — 5,130 — 18,206 34,917 — 5,130 — 53,123 58,253 (29,167 ) 2004 (A) 3015 Winona Avenue Los Angeles — 6,534 — 8,356 6 — 6,534 — 8,362 14,896 (3,462 ) 2004 (A) 1125 Energy Park Drive Minneapolis — 2,775 — 10,761 (5,701 ) (5,900 ) 2,775 — 5,060 7,835 (3,945 ) 2005 (A) 350 East Cermak Road Chicago — 8,466 — 103,232 224,747 — 8,620 — 327,825 336,445 (185,776 ) 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 — 11,561 138 — 2,181 — 11,699 13,880 (4,862 ) 2005 (A) 2401 Walsh Street Silicon Valley — 5,775 — 19,267 37 — 5,775 — 19,304 25,079 (7,589 ) 2005 (A) 2403 Walsh Street Silicon Valley — 5,514 — 11,695 48 — 5,514 — 11,743 17,257 (4,908 ) 2005 (A) 200 North Nash Street Los Angeles — 4,562 — 12,503 232 — 4,562 — 12,735 17,297 (5,809 ) 2005 (A) 731 East Trade Street Charlotte 2,916 (1) 1,748 — 5,727 257 — 1,748 — 5,984 7,732 (2,233 ) 2005 (A) 113 North Myers Charlotte — 1,098 — 3,127 2,069 — 1,098 — 5,196 6,294 (2,186 ) 2005 (A) 125 North Myers Charlotte — 1,271 — 3,738 6,180 — 1,271 — 9,918 11,189 (7,186 ) 2005 (A) Paul van Vlissingenstraat 16 Amsterdam — — — 15,255 22,772 — — — 38,027 38,027 (14,472 ) 2005 (A) 600-780 S. Federal Chicago — 7,849 — 27,881 33,802 — 7,849 — 61,683 69,532 (15,304 ) 2005 (A) 115 Second Avenue Boston — 1,691 — 12,569 11,458 — 1,691 — 24,027 25,718 (14,222 ) 2005 (A) Chemin de l’Epinglier 2 Geneva — — — 20,071 (2,171 ) — — — 17,900 17,900 (6,585 ) 2005 (A) 7500 Metro Center Drive Austin — 1,177 — 4,877 68,296 — 1,177 — 73,173 74,350 (8,207 ) 2005 (A) 3 Corporate Place New York — 1,543 — 12,678 85,251 — 1,543 — 97,929 99,472 (76,002 ) 2005 (A) 1115 Centennial Avenue New York — 581 — — 42,222 — 581 — 42,222 42,803 — 2005 (C) 4025 Midway Road Dallas — 2,196 — 14,037 28,773 — 2,196 — 42,810 45,006 (27,510 ) 2006 (A) Clonshaugh Industrial Estate Dublin — — 1,444 5,569 963 — — 87 7,889 7,976 (4,804 ) 2006 (A) 6800 Millcreek Drive Toronto — 1,657 — 11,352 2,279 — 1,657 — 13,631 15,288 (5,904 ) 2006 (A) 101 Aquila Way Atlanta — 1,480 — 34,797 45 — 1,480 — 34,842 36,322 (12,631 ) 2006 (A) Digital Houston Houston — 6,965 — 23,492 145,603 — 6,965 — 169,095 176,060 (46,323 ) 2006 (A) 120 E Van Buren Phoenix — 4,524 — 157,822 109,068 — 4,524 — 266,890 271,414 (115,072 ) 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 (2,374 ) — — — 11,076 11,076 (4,168 ) 2006 (A) Clonshaugh Industrial Estate II Dublin — — — — 72,561 — — — 72,561 72,561 (35,184 ) 2006 (C) 600 Winter Street Boston — 1,429 — 6,228 456 — 1,429 — 6,684 8,113 (2,134 ) 2006 (A) 2300 NW 89th Place Miami — 1,022 — 3,767 19 — 1,022 — 3,786 4,808 (1,568 ) 2006 (A) 2055 East Technology Circle Phoenix — — — 8,519 27,622 — — — 36,141 36,141 (24,871 ) 2006 (A) Unit 9, Blanchardstown Corporate Park Dublin — 1,927 — 40,024 14,822 — 1,523 — 55,250 56,773 (18,759 ) 2006 (A) 111 8th Avenue New York — — — 17,688 18,687 — — — 36,375 36,375 (28,345 ) 2006 (A) 8100 Boone Boulevard N. Virginia — — — 158 1,211 — — — 1,369 1,369 (1,200 ) 2006 (A) 21110 Ridgetop Circle N. Virginia — 2,934 — 14,311 1,307 — 2,934 — 15,618 18,552 (5,246 ) 2007 (A) 3011 Lafayette Street Silicon Valley — 3,354 — 10,305 49,447 — 3,354 — 59,752 63,106 (44,952 ) 2007 (A) 44470 Chilum Place N. Virginia — 3,531 — 37,360 1 — 3,531 — 37,361 40,892 (10,092 ) 2007 (A) 43881 Devin Shafron Drive N. Virginia — 4,653 — 23,631 92,840 — 4,653 — 116,471 121,124 (80,752 ) 2007 (A) 43831 Devin Shafron Drive N. Virginia — 3,027 — 16,247 1,366 — 3,027 — 17,613 20,640 (5,181 ) 2007 (A) 43791 Devin Shafron Drive N. Virginia — 3,490 — 17,444 76,648 — 3,490 — 94,092 97,582 (46,167 ) 2007 (A) Mundells Roundabout London — 31,354 — — 38,956 — 19,670 — 50,640 70,310 (10,514 ) 2007 (C) 1 Solutions Parkway St. Louis — 3,301 — 20,639 1,460 — 3,301 — 22,099 25,400 (6,304 ) 2007 (A) 1500 Space Park Drive Silicon Valley — 6,732 — 6,325 46,136 — 4,106 — 55,087 59,193 (45,440 ) 2007 (A) Cressex 1 London — 3,629 — 9,036 17,681 — 2,372 — 27,974 30,346 (15,888 ) 2007 (A) Naritaweg 52 Amsterdam — — 1,192 23,441 (6,745 ) — — 860 17,028 17,888 (4,643 ) 2007 (A) 1 St. Anne’s Boulevard London — 1,490 — 1,045 (860 ) — 944 — 731 1,675 (168 ) 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 31,421 — 629 — 32,409 33,038 (4,463 ) 2007 (A) 3 St. Anne’s Boulevard London — 22,079 — 16,351 74,745 — 13,870 — 99,305 113,175 (43,075 ) 2007 (A) 365 South Randolphville Road New York — 3,019 — 17,404 285,554 — 3,019 — 302,958 305,977 (90,405 ) 2008 (A) 701 & 717 Leonard Street Dallas — 2,165 — 9,934 835 — 2,165 — 10,769 12,934 (2,563 ) 2008 (A) Manchester Technopark Manchester — — — 23,918 (8,672 ) — — — 15,246 15,246 (3,720 ) 2008 (A) 1201 Comstock Street Silicon Valley — 2,093 — 1,606 26,767 — 3,398 — 27,068 30,466 (16,276 ) 2008 (A) 1550 Space Park Drive Silicon Valley — 2,301 — 766 2,625 — 2,056 — 3,636 5,692 — 2008 (A) 1525 Comstock Street Silicon Valley — 2,293 — 16,216 30,780 — 2,061 — 47,228 49,289 (27,042 ) 2008 (C) 43830 Devin Shafron Drive N. Virginia — 5,509 — — 73,667 — 5,509 — 73,667 79,176 (30,048 ) 2009 (C) 1232 Alma Road Dallas — 2,267 — 3,740 63,893 — 2,266 — 67,634 69,900 (32,135 ) 2009 (A) 900 Quality Way Dallas — 1,446 — 1,659 69,396 — 1,446 — 71,055 72,501 (13,853 ) 2009 (A) 1210 Integrity Drive Dallas — 2,041 — 3,389 100,985 — 3,796 — 102,619 106,415 (29 ) 2009 (A) 907 Security Row Dallas — 333 — 344 98,890 — 2,112 — 97,455 99,567 (2,790 ) 2009 (A) 908 Quality Way Dallas — 6,730 — 4,493 13,778 — 2,067 — 22,934 25,001 (15,103 ) 2009 (A) 904 Quality Way Dallas — 760 — 744 6,818 — 1,151 — 7,171 8,322 (814 ) 2009 (A) 1215 Integrity Drive Dallas — — — — 44,353 — 1,921 — 42,432 44,353 (11,315 ) 2009 (C) 1350 Duane & 3080 Raymond Silicon Valley — 7,081 — 69,817 61 — 7,081 — 69,878 76,959 (12,978 ) 2009 (A) 45901 & 45845 Nokes Boulevard N. Virginia — 3,437 — 28,785 450 — 3,437 — 29,235 32,672 (5,737 ) 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 (4,389 ) 2009 (A) 60 & 80 Merritt New York — 3,418 — 71,477 92,086 — 3,418 — 163,563 166,981 (28,851 ) 2010 (A) 55 Middlesex Boston — 9,975 — 68,363 8,793 — 9,975 — 77,156 87,131 (19,299 ) 2010 (A) 128 First Avenue Boston — 5,465 — 185,348 31,509 — 5,465 — 216,857 222,322 (53,084 ) 2010 (A) Cateringweg 5 Amsterdam — — 3,518 3,517 35,249 — — 3,023 39,261 42,284 (5,866 ) 2010 (A) 1725 Comstock Street Silicon Valley — 3,274 — 6,567 38,002 — 3,274 — 44,569 47,843 (19,201 ) 2010 (A) 3105 Alfred Street Silicon Valley — 6,533 — 3,725 58,227 — 6,801 — 61,684 68,485 (22,043 ) 2010 (A) 365 Main Street San Francisco — 22,854 — 158,709 23,962 — 22,854 — 182,671 205,525 (40,034 ) 2010 (A) 720 2nd Street San Francisco — 3,884 — 116,861 9,644 — 3,884 — 126,505 130,389 (24,909 ) 2010 (A) 2260 East El Segundo Los Angeles — 11,053 — 51,397 14,310 — 11,053 — 65,707 76,760 (15,223 ) 2010 (A) 2121 South Price Road Phoenix — 7,335 — 238,452 203,628 — 7,335 — 442,080 449,415 (88,460 ) 2010 (A) 4030 Lafayette N. Virginia — 2,492 — 16,912 3,871 — 2,492 — 20,783 23,275 (4,646 ) 2010 (A) 4040 Lafayette N. Virginia — 1,246 — 4,267 24,510 — 1,246 — 28,777 30,023 (2,762 ) 2010 (A) 4050 Lafayette N. Virginia — 1,246 — 4,371 35,110 — 1,246 — 39,481 40,727 (16,862 ) 2010 (A) 2805 Lafayette Street Silicon Valley — 8,976 — 18,155 128,065 — 8,294 — 146,902 155,196 (17,415 ) 2010 (A) 29A International Business Park Singapore — — — 137,545 190,103 — — — 327,648 327,648 (76,738 ) 2010 (A) 43940 Digital Loudoun Plaza N. Virginia — 6,229 — — 255,687 — 6,323 — 255,593 261,916 (42,870 ) 2011 (C) 44060 Digital Loudoun Plaza N. Virginia — 3,700 — — 187,637 — 3,441 — 187,896 191,337 (10,721 ) 2011 (C) 44100 Digital Loudoun Plaza N. Virginia — 3,700 — — 128,634 — 3,750 — 128,584 132,334 (1,139 ) 2011 (C) 43780 Digital Loudoun Plaza N. Virginia — 3,671 — — 52,214 — 4,633 — 51,252 55,885 (139 ) 2011 (C) 1-11 Templar Road Sydney — 6,937 — — 62,024 — 4,550 — 64,411 68,961 (9,346 ) 2011 (C) 13-23 Templar Road Sydney 4,236 — — 426 — 3,424 — 1,238 4,662 — 2011 (C) Fountain Court London — 7,544 — 12,506 90,541 — 6,145 — 104,446 110,591 (12,647 ) 2011 (A) 72 Radnor Drive Melbourne — 2,568 — — 53,962 — 1,805 — 54,725 56,530 (5,163 ) 2011 (C) 98 Radnor Drive Melbourne — 1,899 — — 36,164 — 1,375 — 36,688 38,063 (10,242 ) 2011 (C) 105 Cabot Street Boston — 2,386 — — 58,844 — 2,427 — 58,803 61,230 (5,502 ) 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 — — 57,103 — 1,689 — 57,103 58,792 (14,163 ) 2011 (C) 11085 Sun Center Drive Sacramento — 2,490 — 21,509 1 — 2,490 — 21,510 24,000 (3,253 ) 2011 (A) Profile Park Dublin — 6,288 — — 39,505 — 5,205 — 40,588 45,793 (1,321 ) 2011 (C) 1506 & 44874 Moran Road N. Virginia — 1,527 — — 17,185 — 1,115 — 17,597 18,712 (1,800 ) 2011 (A) 760 Doug Davis Drive Atlanta — 4,837 — 53,551 3,086 — 4,837 — 56,637 61,474 (9,862 ) 2011 (A) 360 Spear Street San Francisco — 19,828 — 56,733 (771 ) — 19,828 — 55,962 75,790 (10,532 ) 2011 (A) 2501 S. State Hwy 121 Dallas — 23,137 — 93,943 17,189 — 23,137 — 111,132 134,269 (22,488 ) 2012 (A) 9333 Grand Avenue Chicago — 5,686 — 14,515 76,939 — 1,205 — 95,935 97,140 (21,486 ) 2012 (A) 9355 Grand Avenue Chicago — — — 224,912 — 2,518 — 222,394 224,912 (7,330 ) 2012 (A) 9377 Grand Avenue Chicago — — — 75,821 — 2,248 — 73,573 75,821 (38 ) 2012 (A) 8025 North Interstate 35 Austin — 2,920 — 8,512 185 — 2,920 — 8,697 11,617 (1,305 ) 2012 (A) 850 E Collins Dallas — 1,614 — — 83,041 — 1,614 — 83,041 84,655 (10,903 ) 2012 (C) 950 E Collins Dallas — 1,546 — — 74,874 — 1,546 — 74,874 76,420 (6,421 ) 2012 (C) 400 S. Akard Dallas — 10,075 — 62,730 1,902 — 10,075 — 64,632 74,707 (7,910 ) 2012 (A) 410 Commerce Boulevard New York — — — — 29,784 — — — 29,784 29,784 (8,027 ) 2012 (C) Croydon London — 1,683 — 104,728 34,197 — 2,203 — 138,405 140,608 (17,161 ) 2012 (A) Watford London — — 7,355 219,273 (15,784 ) — — 6,043 204,801 210,844 (24,862 ) 2012 (A) Unit 21 Goldsworth Park London — 17,334 — 928,129 (218,845 ) — 12,327 — 714,291 726,618 (93,086 ) 2012 (A) 11900 East Cornell Denver — 3,352 — 80,640 2,059 — 3,352 — 82,699 86,051 (11,645 ) 2012 (A) 701 Union Boulevard New York — 10,045 — 6,755 26,299 — 10,045 — 33,054 43,099 — 2012 (A) 23 Waterloo Road Sydney — 7,112 — 3,868 (3,366 ) — 4,932 — 2,682 7,614 (310 ) 2012 (A) 1 Rue Jean-Pierre Paris — 9,621 — 35,825 (9,218 ) — 7,669 — 28,559 36,228 (4,143 ) 2012 (A) Liet-dit le Christ de Saclay Paris — 3,402 — 3,090 (1,317 ) — 2,712 — 2,463 5,175 (461 ) 2012 (A) 127 Rue de Paris Paris — 8,637 — 10,838 (3,950 ) — 6,886 — 8,639 15,525 (1,559 ) 2012 (A) 17201 Waterview Parkway Dallas — 2,070 — 6,409 (1 ) — 2,070 — 6,408 8,478 (825 ) 2013 (A) 1900 S. Price Road Phoenix — 5,380 — 16,975 486 — 5,398 — 17,443 22,841 (1,815 ) 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 88,306 — 6,014 — 90,363 96,377 (4,305 ) 2013 (A) 1500 Towerview Road Minneapolis — 10,190 20,054 3,191 — 10,190 — 23,245 33,435 (3,029 ) 2013 (A) Principal Park London — 11,837 — 101,915 — 12,044 — 101,708 113,752 (3,890 ) 2013 (C) MetCenter Business Park Austin — 8,604 20,314 395 — 8,604 — 20,709 29,313 (3,043 ) 2013 (A) Liverpoolweg 10 Amsterdam — 733 3,122 8,138 — 591 — 11,402 11,993 (1,183 ) 2013 (A) DePresident Amsterdam — 6,737 — 30,369 — 7,030 — 30,076 37,106 — 2013 (C) Digital Osaka Osaka — 9,649 — 43,689 — 9,043 — 44,295 53,338 — 2013 (C) Crawley 2 London — 24,305 — 1,227 — 18,502 — 7,030 25,532 (190 ) 2014 (C) Digital Deer Park 3 Melbourne — 1,600 — — 32 — 1,630 — 2 1,632 — 2015 (C) 3 Loyang Way Singapore — — — — 110,303 — — — 110,303 110,303 (320 ) 2015 (A) Digital Loudoun III N. Virginia — 43,000 — — 26,278 — 51,673 — 17,605 69,278 (10 ) 2015 (C) Digital Frankfurt Frankfurt — 5,543 — — 7,884 — 8,266 — 5,161 13,427 — 2015 (C) 56 Marietta Street Atlanta — 1,700 — 211,397 7,329 — 1,700 — 218,726 220,426 (10,882 ) 2015 (A) 2 Peekay Drive New York — — — 115,439 5,072 — — — 120,511 120,511 (8,637 ) 2015 (A) 100 Delawanna Avenue New York — 3,600 — 85,438 3,400 — 3,600 — 88,838 92,438 (3,985 ) 2015 (A) 60 Hudson Street New York — — — 32,280 4,249 — — — 36,529 36,529 (4,064 ) 2015 (A) 32 Avenue of the Americas New York — — — 30,980 1,368 — — — 32,348 32,348 (2,765 ) 2015 (A) 3433 S 120th Place Seattle — — — 11,688 1,387 — — — 13,075 13,075 (2,074 ) 2015 (A) 8435 Stemmons Freeway Dallas — — — 5,023 1,425 — — — 6,448 6,448 (841 ) 2015 (A) 2625 Walsh Avenue Silicon Valley — — — 4,276 2,648 — — — 6,924 6,924 (550 ) 2015 (A) 111 8th Avenue - Telx New York (2) — — — 42,454 5,433 — — 47,887 47,887 (6,506 ) 2015 (A) 350 East Cermak Road - Telx Chicago (2) — — — 13,933 2,180 — — — 16,113 16,113 (1,749 ) 2015 (A) 200 Paul Avenue - Telx San Francisco (2) — — — 6,719 1,160 — — — 7,879 7,879 (958 ) 2015 (A) 2323 Bryan Street - Telx Dallas (2) — — — 5,191 1,725 — — — 6,916 6,916 (853 ) 2015 (A) 600 W. 7th Street - Telx Los Angeles (2) — — — 3,689 498 — — — 4,187 4,187 (506 ) 2015 (A) 3825 NW Aloclek Place - Telx Portland (2) — — — 3,131 835 — — — 3,966 3,966 (364 ) 2015 (A) 120 E. Van Buren Street - Telx Phoenix (2) — — — 2,848 765 — — — 3,613 3,613 (383 ) 2015 (A) 36 NE 2nd Street - Telx Miami (2) — — — 1,842 649 — — — 2,491 2,491 (353 ) 2015 (A) 600-780 S. Federal Street - Telx Chicago (2) — — — 1,815 1,682 — — — 3,497 3,497 (293 ) 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 (2) — — — 476 40 — — — 516 516 (75 ) 2015 (A) 1100 Space Park Drive - Telx Silicon Valley (2) — — — 352 109 — — — 461 461 (61 ) 2015 (A) 300 Boulevard East - Telx New York (2) — — — 197 25 — — — 222 222 (57 ) 2015 (A) Science Park Amsterdam (3) — 665 — 75,095 15,671 — 631 — 90,800 91,431 (903 ) 2016 (A) Sovereign House London (3) — 7,943 — 44,114 (2,095 ) — 7,527 — 42,435 49,962 (2,188 ) 2016 (A) Amstel Business Park Amsterdam (3) — 2,991 — 58,138 2,184 — 2,840 — 60,473 63,313 (2,587 ) 2016 (A) Olivers Yard London (3) — 7,943 — 34,744 (2,099 ) — 7,527 — 33,061 40,588 (1,782 ) 2016 (A) Bonnington House London (3) — — — 14,127 (252 ) — — — 13,875 13,875 (1,094 ) 2016 (A) West Drayton London (3) — — — 10,135 (330 ) — — — 9,805 9,805 (832 ) 2016 (A) Lyonerstrasse Frankfurt (3) — — — 8,407 (393 ) — — — 8,014 8,014 (586 ) 2016 (A) Meridian Gate London (3) — — — 5,893 (255 ) — — — 5,638 5,638 (445 ) 2016 (A) NE Corner of Campbell Road and Ferris Road Dallas — 16,542 — — 230 — 16,772 — — 16,772 — 2016 (C) 9401 West Grand Avenue Chicago — 12,500 — — 973 — 13,430 — 43 13,473 — 2016 (C) Broad Run Technology Park N. Virginia — 18,019 — — 5,422 — 23,314 — 127 23,441 — 2016 (C) Other — 8,298 — 94,343 — — — 102,641 102,641 (14,485 ) 2,916 786,205 14,986 5,231,322 5,525,956 (5,900 ) 746,822 11,335 10,800,312 11,558,469 (2,668,509 ) (1) The balance shown excludes an unamortized premium of $334 . (2) Represents properties acquired in the Telx Acquisition. (3) Represents properties acquired in the European Portfolio Acquisition. (1) Tax Cost The aggregate gross cost of the Company’s properties for federal income tax purposes approximated $13.4 billion (unaudited) as of December 31, 2016 . (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, 2016 . Year Ended December 31, 2016 2015 2014 Balance, beginning of year $ 10,915,373 $ 9,982,612 $ 9,879,578 Additions during period (acquisitions and improvements) 760,051 1,133,263 560,307 Deductions during period (dispositions, impairments and assets held for sale) (116,955 ) (200,502 ) (457,273 ) Balance, end of year $ 11,558,469 $ 10,915,373 $ 9,982,612 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, 2016 . Year Ended December 31, 2016 2015 2014 Balance, beginning of year $ 2,251,268 $ 1,874,054 $ 1,565,996 Additions during period (depreciation and amortization expense) 461,506 429,057 413,652 Deductions during period (dispositions and assets held for sale) (44,265 ) (51,843 ) (105,594 ) Balance, end of year $ 2,668,509 $ 2,251,268 $ 1,874,054 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, 2016
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, 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	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. 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.
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 is amortized to expense over the remaining initial terms of the respective leases. The value of tenant relationship intangibles is 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 performs 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 our qualitative assessment indicates that goodwill impairment is more likely than not, we perform a two-step impairment test. We test goodwill for impairment under the two-step impairment test by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value or qualitative factors indicate that it is more likely than not that goodwill is impaired, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. We estimate the fair value of the reporting units using discounted cash flows. If the carrying value of goodwill exceeds its fair value, an impairment charge is recognized. We have not recognized any goodwill impairments since our inception.
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. In the statement of cash flows, cash flows denominated in foreign currencies are translated using the exchange rates in effect at the time of the cash flows or an average exchange rate for the period, depending on the nature of the cash flow item.
Deferred Financing Costs	Deferred Financing Costs Loan fees and costs are recorded as an adjustment to the carrying amount of the related debt 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	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	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. In addition, we have entered into a series of forward contracts pursuant to which we agreed to sell an amount of foreign currency for an agreed upon amount of USD. These forward contracts were executed to manage foreign currency exposures associated with certain transactions. We do not enter into derivative instruments for trading purposes. 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.
Income Taxes	Income Taxes Digital Realty Trust, Inc. has elected to be treated as a real estate investment trust (“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, 2016 and 2015 , 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.
Presentation of Transactional-based Taxes	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. During the three months ended December 31, 2016 , we recognized a non-cash gain on lease termination of approximately $29.2 million , as one of our tenants, as part of a lease termination, conveyed substantially all of its colocation and turn-key improvements to the Company. Colocation services are generally governed by a master terms and conditions agreement (MTC). Customers typically execute an MTC for one - to three -year terms. The Company bills customers on a monthly basis and recognizes the revenue as those services are performed over the term of the agreement. Revenues from installation services for colocation services are initially deferred and recognized on a straight-line basis over the average life of customer contracts. Interconnection services are generally provided on a month-to-month, one-year or multi-year term under the MTC for colocation services. Interconnection services include port and cross-connect services. Port services are typically sold on a one-year or multi-year term and revenue is recognized on a recurring monthly basis similar to colocation services. The Company bills customers on a monthly basis and recognizes the revenue in the period the service is provided. Revenue for cross-connect installations is generally recognized in the period the cross-connect is installed. 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.
Gains on Sale of Properties	Gains on Sale of Properties Gains on sale of properties are recognized using the full accrual or partial sale methods, as applicable, in accordance with U.S. GAAP, provided various criteria relating to the terms of sale and any subsequent involvement with the real estate sold are satisfied.
Fee Income	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.
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 costs associated with asbestos removal at the end of the economic life of properties that were built before 1984 along with remediation of soil contamination issues.
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.
Management's 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.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update, or ASU, No. 2014-09, "Revenue from Contracts with Customers", and since that date has issued several additional ASUs intended to clarify certain aspects of ASU 2014-09 and to provide for certain practical expedients entities can elect upon adoption. Collectively, these ASUs outline a single comprehensive model for entities to use in accounting for revenues arising from contracts with customers. While lease contracts with customers, which constitute the vast majority of our revenues, are a specific scope exception, this update may have implications in certain variable payment terms included in lease agreements. The standard is effective for the Company on January 1, 2018, with early adoption permitted. The standard permits the use of either a retrospective or cumulative effect transition method and permits the use of certain practical expedients We currently anticipate using the cumulative effect transition method, however, this determination is subject to change. As the standard does not significantly impact lessor accounting, we do not believe adoption will have a material impact on our accounting for rental revenue. In addition, we do not anticipate a significant impact to our accounting for certain of our revenue streams which are not based on contractually specified lease amounts, including interconnection, tenant reimbursement and other revenue. 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. Accounting for leases with a term of 12 months or less will be 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. ASU 2016-02 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. A set of practical expedients for implementation, which must be elected as a package and for all leases, may also be elected. These practical expedients include relief from re-assessing lease classification at the adoption date for expired or existing leases, although a right-of-use asset and lease liability would still be recorded for such leases. We are currently assessing the method of adoption and the impact that ASU 2016-02 will have on our consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, “Interest - Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs”. ASU 2015-03 amended the then-current presentation guidance by requiring that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. ASU 2015-03 was effective for the Company beginning with the quarter ended March 31, 2016. The adoption of this standard required restatement of our consolidated balance sheet as of December 31, 2015. As a result, Deferred financing costs, net decreased by $35.2 million and Global unsecured revolving credit facility, Unsecured term loan, Unsecured senior notes and Mortgage loans decreased by $7.6 million , $1.3 million , $26.0 million and $0.3 million , respectively, versus amounts previously reported. In February 2015, the FASB issued 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. ASU 2015-02 was effective for the Company beginning with the quarter ended March 31, 2016 and the adoption of the standard did not have a significant impact on our consolidated financial statements. In November 2016, the FASB issued an ASU that will require companies to include restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The ASU will require a disclosure of a reconciliation between the statement of financial position and the statement of cash flows when the statement of financial position includes more than one line item for cash, cash equivalents, restricted cash, and restricted cash equivalents. Entities with material restricted cash and restricted cash equivalents balances will be required to disclose the nature of the restrictions. The ASU is effective for reporting periods beginning after December 15, 2017, with early adoption permitted, and will be applied retrospectively to all periods presented. As of December 31, 2016 and 2015 , we had $11.5 million and $18.0 million of restricted cash, respectively, in our consolidated balance sheets. Upon adoption of this ASU, restricted cash balances will be included along with cash and cash equivalents as of the end of period and beginning of period, respectively, in our consolidated statement of cash flows for all periods presented; separate line items showing changes in restricted cash balances will be eliminated from our consolidated statement of cash flows. In January 2017, the FASB issued ASU 2017-01, "Clarifying the Definition of a Business (Topic 805)." ASU 2017-01 clarifies the definition of a business and provides further guidance for evaluating whether a transaction will be accounted for as an acquisition of an asset or a business. ASU 2017-01 is effective for interim and annual periods beginning after December 15, 2017, and early adoption is permitted. The update should be applied prospectively. We adopted ASU 2017-01 as of January 1, 2017 and the adoption did not require any additional disclosures. We believe most of our future acquisitions of operating properties will qualify as asset acquisitions and most future transaction costs associated with these acquisitions will be capitalized.

Summary of Significant Accoun31

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016
Business Combinations [Abstract]
Schedule of Real Estate Properties	A summary of our investments in properties as of December 31, 2016 and 2015 is as follows: As of December 31, 2016 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 109,714 $ — $ 1,924,869 $ 93,472 $ (675,725 ) $ 1,452,330 Data Centers 598,475 10,014 8,052,356 431,444 (1,924,694 ) 7,167,595 Technology Manufacturing 20,199 1,321 57,766 6,333 (24,595 ) 61,024 Technology Office 12,398 — 73,650 1,460 (21,407 ) 66,101 Other 6,036 — 158,884 78 (22,088 ) 142,910 $ 746,822 $ 11,335 $ 10,267,525 $ 532,787 $ (2,668,509 ) $ 8,889,960 As of December 31, 2015 (in thousands) Property Type Land Acquired Building and Tenant Accumulated Net Internet Gateway Data Centers $ 109,389 $ — $ 1,440,594 $ 95,185 $ (607,452 ) $ 1,037,716 Data Centers 539,298 11,317 7,438,334 433,679 (1,575,589 ) 6,847,039 Technology Manufacturing 20,199 1,322 56,254 6,333 (22,677 ) 61,431 Technology Office 12,142 — 49,470 1,459 (18,564 ) 44,507 Other 8,545 — 691,775 78 (26,986 ) 673,412 $ 689,573 $ 12,639 $ 9,676,427 $ 536,734 $ (2,251,268 ) $ 8,664,105 (1) Balance includes, as of December 31, 2016 and 2015 , $0.9 billion and $0.7 billion of direct and accrued costs associated with development in progress, respectively.
Schedule of Purchase Price Allocation	The table below summarizes the preliminary purchase price allocation for the European Portfolio Acquisition (in thousands): Investments in real estate $ 270,195 Goodwill 445,137 Intangibles: Tenant relationship value 249,070 Acquired in-place lease value 18,807 Above/below-market lease value, net 4,817 Capital lease and other long-term obligations (118,923 ) Deferred taxes (50,199 ) Total purchase price $ 818,904 The following table summarizes the 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)	(amounts in thousands, except for per share amounts) 2016 2015 Total revenues $ 2,199,358 $ 1,875,783 Net income (loss) available to common stockholders $ 343,235 $ 239,201 Net income (loss) per share available to common stockholders - basic and diluted $ 2.28 $ 1.72
Schedule of Real Estate Property Acquisitions	2015 Acquisitions Location Market 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 (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. Location Market Date Acquired Amount Sovereign House London July 5, 2016 (1) West Drayton London July 5, 2016 (1) Olivers Yard London July 5, 2016 (1) Bonnington House London July 5, 2016 (1) Meridian Gate London July 5, 2016 (1) Amsterdam Business Park Amsterdam July 5, 2016 (1) Amsterdam Science Park Amsterdam July 5, 2016 (1) Lyonerstrasse Frankfurt July 5, 2016 (1) Land parcels (2) Various Various $ 47.6 Total $ 866.5 (1) On July 5, 2016, the Company completed the acquisition of a portfolio of eight high-quality, carrier-neutral data centers in Europe from Equinix, which we refer to as the European Portfolio Acquisition. The purchase price was $818.9 million in the aggregate (based on the exchange rate at the date of acquisition). (2) Represents currently vacant land which is not included in our operating property count. We completed four acquisitions of land parcels in the three months ended September 30, 2016 in Northern Virginia, Dallas and Chicago. Excludes capitalized closing costs on land acquisitions.
Schedule of Dispositions	We sold the following real estate properties during the years ended December 31, 2016 and 2015 : 2016 Dispositions Location Market Date Sold Gross Proceeds (in millions) Gain on Sale (in millions) 47700 Kato Road and 1055 Page Avenue Silicon Valley January 21, 2016 $ 37.5 $ 1.0 Data center portfolio (1) Various July 11, 2016 114.5 24.5 114 Rue Ambroise Croizat (2) Paris August 1, 2016 212.0 144.3 $ 364.0 $ 169.8 (1) On July 11, 2016, the Company closed on the sale of a four -property data center portfolio, including two in St. Louis and two in Northern Virginia, totaling over 454,000 square feet for approximately $114.5 million . The Company recognized a gain on the sale of approximately $24.5 million in the third quarter of 2016. The four properties were classified as held for sale as of June 30, 2016. (2) The Company granted Equinix an option to acquire the Company's facility in 114 rue Ambroise Croizat in Paris. Equinix elected to exercise its option to acquire the Paris property, and on July 2, 2016, the Company entered into an agreement to sell the property to Equinix for approximately €190 million (or approximately $212 million based on the exchange rate as of August 1, 2016). The Paris property sale closed on August 1, 2016. The Company recognized a gain on the sale of approximately $144.3 million in the third quarter of 2016. This property was classified as held for sale as of June 30, 2016. 2015 Dispositions Location Market 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 (1) Gross proceeds includes a $9.0 million note receivable, which was collected prior to December 31, 2015 .

Investment in Unconsolidated 33

Investment in Unconsolidated Joint Ventures (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 , 2015 , and 2014 (in thousands): 2016 % Net Investment Total Mortgage Total Equity / Revenues Property Net Net Unconsolidated Joint Ventures 2001 Sixth Avenue 50.00 % $ 27,342 $ 43,258 $ 101,394 $ 106,241 $ (62,983 ) $ 45,518 $ (15,574 ) $ 29,944 $ 16,374 2020 Fifth Avenue 50.00 % 45,973 55,005 47,000 47,612 7,393 8,788 (1,500 ) 7,288 4,821 33 Chun Choi Street (Hong Kong) 50.00 % 134,249 184,855 — 3,291 181,564 18,856 (6,636 ) 12,220 6,315 PREI ® 20.00 % 409,876 468,298 207,270 288,325 179,973 41,075 (8,503 ) 32,572 13,615 GCEAR 20.00 % 116,949 162,863 101,477 104,393 58,470 19,742 (7,808 ) 11,934 (1,396 ) 1101 Space Park Drive 17.00 % 6,839 8,415 — 135 8,280 3,539 (4,105 ) (566 ) $ (1,515 ) Total Unconsolidated Joint Ventures $ 741,228 $ 922,694 $ 457,141 $ 549,997 $ 372,697 $ 137,518 $ (44,126 ) $ 93,392 $ 38,214 Our investment in and share of equity in earnings of unconsolidated joint ventures $ 106,402 $ 17,104 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

Acquired Intangible Assets an34

Acquired Intangible Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 . Balance as of (Amounts in thousands) December 31, 2016 December 31, 2015 Real Estate Intangibles: Acquired in-place lease value: Gross amount $ 896,693 $ 901,381 Accumulated amortization (517,443 ) (472,933 ) Net $ 379,250 $ 428,448 Tenant relationship value: Gross amount $ 971,519 $ 734,800 Accumulated amortization (82,069 ) (14,495 ) Net $ 889,450 $ 720,305 Trade name: Gross amount $ 7,300 $ 7,300 Accumulated amortization (7,300 ) (417 ) Net $ — $ 6,883 Acquired above-market leases: Gross amount $ 110,142 $ 122,311 Accumulated amortization (87,961 ) (89,613 ) Net $ 22,181 $ 32,698 Acquired below-market leases: Gross amount $ 283,899 $ 294,791 Accumulated amortization (202,000 ) (193,677 ) Net $ 81,899 $ 101,114
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, 2017 is as follows: (Amounts in thousands) 2017 $ 7,216 2018 5,566 2019 5,698 2020 7,422 2021 7,114 Thereafter 26,702 Total $ 59,718
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, 2017 is as follows: (Amounts in thousands) 2017 $ 54,088 2018 47,640 2019 40,515 2020 36,561 2021 33,958 Thereafter 166,488 Total $ 379,250 Estimated annual amortization of customer contracts for each of the five succeeding years and thereafter, commencing January 1, 2017 is as follows: (Amounts in thousands) 2017 $ 69,608 2018 69,608 2019 69,608 2020 69,608 2021 69,608 Thereafter 541,410 Total $ 889,450

Debt of the Operating Partner35

Debt of the Operating Partnership (Tables) - Digital Realty Trust, L.P.	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 is as follows (in thousands): Indebtedness Interest Rate at December 31, 2016 Maturity Date Principal Outstanding December 31, 2016 Principal Outstanding December 31, 2015 Global revolving credit facility Various (1) Jan 15, 2020 (1) $ 210,077 (2) $ 967,884 (2) Deferred financing costs, net (10,868 ) (7,613 ) Global revolving credit facility, net 199,209 960,271 Unsecured Term Loan Unsecured term loan — 5-year Various (3)(4) Jan 15, 2021 1,188,498 (5) 924,568 (5) Unsecured term loan — 7-year Various (3)(4) Jan 15, 2023 300,000 (5) — Deferred financing costs, net (6,137 ) (1,301 ) Unsecured term loan, net 1,482,361 923,267 Unsecured senior notes: Prudential Shelf Facility: Series C 9.680% Jan 6, 2016 — 25,000 Series E 5.730% Jan 20, 2017 (6) 50,000 50,000 Total Prudential Shelf Facility 50,000 75,000 Senior Notes: 5.875% notes due 2020 5.875% Feb 1, 2020 500,000 500,000 3.400% notes due 2020 3.400% Oct 1, 2020 500,000 500,000 5.250% notes due 2021 5.250% Mar 15, 2021 400,000 400,000 3.950% notes due 2022 3.950% Jul 1, 2022 500,000 500,000 3.625% notes due 2022 3.625% Oct 1, 2022 300,000 300,000 4.750% notes due 2023 4.750% Oct 13, 2023 370,200 (7) 442,080 (7) 2.625% notes due 2024 2.625% Apr 15, 2024 631,020 (8) — 4.250% notes due 2025 4.250% Jan 17, 2025 493,600 (7) 589,440 (7) 4.750% notes due 2025 4.750% Oct 1, 2025 450,000 450,000 Unamortized discounts (15,649 ) (17,914 ) Total senior notes, net of discount 4,129,171 3,663,606 Deferred financing costs, net (25,374 ) (26,037 ) Total unsecured senior notes, net of discount and deferred financing costs 4,153,797 3,712,569 Mortgage loans: 2045 & 2055 Lafayette Street 5.93% Feb 6, 2017 — 61,437 34551 Ardenwood Boulevard 1-4 5.95% Nov 11, 2016 — 50,477 1100 Space Park Drive 5.89% Dec 11, 2016 — 50,423 600 West Seventh Street 5.80% Mar 15, 2016 — 46,000 150 South First Street 6.30% Feb 6, 2017 — 48,484 2334 Lundy Place 5.96% Nov 11, 2016 — 36,714 8025 North Interstate 35 4.09% Mar 6, 2016 — 5,789 731 East Trade Street 8.22% Jul 1, 2020 2,916 3,420 Unamortized net premiums 334 439 Total mortgage loans, including premiums 3,250 303,183 Deferred financing costs, net (10 ) (253 ) Total mortgage loans, including premiums and net of deferred financing costs 3,240 302,930 Total indebtedness $ 5,838,607 $ 5,899,037 (1) The interest rate for borrowings under the 2016 global revolving credit facility equals the applicable index plus a margin of 100 basis points, which is based on the current credit ratings of our long-term debt. An annual facility fee of 20 basis points, which is based on the current credit ratings 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, 2016 and December 31, 2015 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2016 Weighted-average Balance as of December 31, 2015 Weighted-average Floating Rate Borrowing (a) U.S. dollar ($) $ 105,000 1.67 % $ 274,000 1.46 % British pound sterling (£) 11,106 (b) 1.25 % 95,784 (d) 1.61 % Euro (€) 15,250 (b) 0.63 % 280,565 (d) 0.90 % Australian dollar (AUD) — — % 96,831 (d) 3.16 % Hong Kong dollar (HKD) 1,728 (b) 1.66 % 86,082 (d) 1.33 % Japanese yen (JPY) 54,273 (b) 0.92 % 14,304 (d) 1.15 % Singapore dollar (SGD) 11,186 (b) 1.52 % 49,132 (d) 1.92 % Canadian dollar (CAD) 11,534 (b) 1.92 % 71,186 (d) 1.95 % Total $ 210,077 1.39 % $ 967,884 1.53 % (a) The interest rates for floating rate borrowings under the global revolving credit facility currently equal the applicable index plus a margin of 100 basis points, which is based on the credit rating of our long-term debt. (b) Based on exchange rates of $1.23 to £1.00, $1.05 to €1.00 , $0.13 to 1.00 HKD, $0.01 to 1.00 JPY, $0.69 to 1.00 SGD and $0.74 to 1.00 CAD, respectively, as of December 31, 2016 . (c) Based on exchange rates $1.47 to £1.00, of $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 $0.72 to 1.00 CAD, respectively, as of December 31, 2015 . (3) Interest rates are based on our current senior unsecured debt ratings and are 110 basis points and 155 basis points over the applicable index for floating rate advances for the 5 -Year Term Loan and the 7 -Year Term Loan, respectively. (4) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar, Singapore dollar, British pound sterling and Canadian dollar tranches of the unsecured term loan. See Note 14 "Derivative Instruments" for further information. (5) Balances as of December 31, 2016 and December 31, 2015 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2016 Weighted-average Balance as of December 31, 2015 Weighted-average U.S. dollar ($) $ 710,911 1.99 % (b) $ 410,905 1.51 % (d) British pound sterling (£) 209,132 (a) 1.36 % (b) 178,195 (c) 1.78 % (d) Singapore dollar (SGD) 222,824 (a) 1.76 % (b) 161,070 (c) 2.16 % Australian dollar (AUD) 170,325 (a) 2.72 % 75,337 (c) 3.27 % Hong Kong dollar (HKD) 86,029 (a) 1.77 % — — % Canadian dollar (CAD) 73,294 (a) 2.00 % (b) — — % Euro (€) — — % 99,061 (c) 1.00 % Japanese yen (JPY) 15,983 (a) 0.98 % — — % Total $ 1,488,498 1.93 % (b) $ 924,568 1.76 % (d) (a) Based on exchange rates of $0.69 to 1.00 SGD, $1.23 to £1.00 , $0.72 to 1.00 AUD, $0.13 to 1.00 HKD, $0.74 to 1.00 CAD and $0.01 to 1.00 JPY, respectively, as of December 31, 2016 . (b) As of December 31, 2016 , the weighted-average interest rate reflecting interest rate swaps was 2.45% (U.S. dollar), 1.89% (British pound sterling), 1.90% (Singapore dollar), 1.88% (Canadian dollar) and 2.23% (Total). See Note 14 for further discussion on interest rate swaps. (c) 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 . (d) 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. (6) On January 20, 2017, the Company paid this unsecured note in full at maturity. (7) Based on exchange rates of $1.23 to £1.00 as of December 31, 2016 and $1.47 to £1.00 as of December 31, 2015 . (8) Based on exchange rate of $1.05 to €1.00 as of December 31, 2016 .
Schedule of Debt Maturities and Principal Maturities	The table below summarizes our debt maturities and principal payments as of December 31, 2016 (in thousands): Global Revolving (1) Unsecured Prudential (2) Senior Notes Mortgage Total 2017 $ — $ — $ 50,000 $ — $ 546 $ 50,546 2018 — — — — 593 593 2019 — — — — 644 644 2020 210,077 — — 1,000,000 1,133 1,211,210 2021 — 1,188,498 — 400,000 — 1,588,498 Thereafter — 300,000 — 2,744,820 — 3,044,820 Subtotal $ 210,077 $ 1,488,498 $ 50,000 $ 4,144,820 $ 2,916 $ 5,896,311 Unamortized discount — — — (15,649 ) — (15,649 ) Unamortized premium — — — — 334 334 Total $ 210,077 $ 1,488,498 $ 50,000 $ 4,129,171 $ 3,250 $ 5,880,996 (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. (2) On January 20, 2017, we repaid the $50.0 million of 5.73% Series E unsecured notes under the Prudential shelf facility at maturity.

Income per Share (Tables)

Income per Share (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 2015 2014 Net income available to common stockholders $ 332,088 $ 217,266 $ 132,718 Weighted average shares outstanding—basic 149,953,662 138,247,606 133,369,047 Potentially dilutive common shares: Stock options 9,726 20,424 30,434 Unvested incentive units 71,031 95,746 90,449 Forward equity offering 3,990 — — Market performance-based awards 641,279 501,645 147,305 Weighted average shares outstanding—diluted 150,679,688 138,865,421 133,637,235 Income per share: Basic $ 2.21 $ 1.57 $ 1.00 Diluted $ 2.20 $ 1.56 $ 0.99
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, 2016 2015 2014 Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. 2,406,018 2,658,291 2,753,614 Potentially dilutive 2029 Debentures — — 1,957,963 Potentially dilutive Series E Cumulative Redeemable Preferred Stock 2,880,254 4,301,438 4,956,175 Potentially dilutive Series F Cumulative Redeemable Preferred Stock 1,939,905 2,727,962 3,143,195 Potentially dilutive Series G Cumulative Redeemable Preferred Stock 2,652,503 3,730,042 4,297,805 Potentially dilutive Series H Cumulative Redeemable Preferred Stock 3,886,966 5,465,987 4,320,495 Potentially dilutive Series I Cumulative Redeemable Preferred Stock 2,655,607 1,235,063 — 16,421,253 20,118,783 21,429,247

Income per Unit (Tables)

Income per Unit (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 2015 2014 Net income available to common stockholders $ 332,088 $ 217,266 $ 132,718 Weighted average shares outstanding—basic 149,953,662 138,247,606 133,369,047 Potentially dilutive common shares: Stock options 9,726 20,424 30,434 Unvested incentive units 71,031 95,746 90,449 Forward equity offering 3,990 — — Market performance-based awards 641,279 501,645 147,305 Weighted average shares outstanding—diluted 150,679,688 138,865,421 133,637,235 Income per share: Basic $ 2.21 $ 1.57 $ 1.00 Diluted $ 2.20 $ 1.56 $ 0.99
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, 2016 2015 2014 Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. 2,406,018 2,658,291 2,753,614 Potentially dilutive 2029 Debentures — — 1,957,963 Potentially dilutive Series E Cumulative Redeemable Preferred Stock 2,880,254 4,301,438 4,956,175 Potentially dilutive Series F Cumulative Redeemable Preferred Stock 1,939,905 2,727,962 3,143,195 Potentially dilutive Series G Cumulative Redeemable Preferred Stock 2,652,503 3,730,042 4,297,805 Potentially dilutive Series H Cumulative Redeemable Preferred Stock 3,886,966 5,465,987 4,320,495 Potentially dilutive Series I Cumulative Redeemable Preferred Stock 2,655,607 1,235,063 — 16,421,253 20,118,783 21,429,247
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, 2016 2015 2014 Net income available to common unitholders $ 337,386 $ 220,343 $ 135,485 Weighted average units outstanding—basic 152,359,680 140,905,897 136,122,661 Potentially dilutive common units: Stock options 9,726 20,424 30,434 Unvested incentive units 71,031 95,746 90,449 Forward equity offering 3,990 — — Market performance-based awards 641,279 501,645 147,305 Weighted average units outstanding—diluted 153,085,706 141,523,712 136,390,849 Income per unit: Basic $ 2.21 $ 1.56 $ 1.00 Diluted $ 2.20 $ 1.55 $ 0.99
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, 2016 2015 2014 Potentially dilutive 2029 Debentures — — 1,957,963 Potentially dilutive Series E Cumulative Redeemable Preferred Units 2,880,254 4,301,438 4,956,175 Potentially dilutive Series F Cumulative Redeemable Preferred Units 1,939,905 2,727,962 3,143,195 Potentially dilutive Series G Cumulative Redeemable Preferred Units 2,652,503 3,730,042 4,297,805 Potentially dilutive Series H Cumulative Redeemable Preferred Units 3,886,966 5,465,987 4,320,495 Potentially dilutive Series I Cumulative Redeemable Preferred Units 2,655,607 1,235,063 — 14,015,235 17,460,492 18,675,633

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Schedule of Deferred Tax Assets and Liabilities	Deferred income tax assets and liabilities as of December 31, 2016 and 2015 were as follows (in thousands): 2016 2015 Gross deferred income tax assets: Net operating loss carryforwards $ 98,054 $ 123,091 Basis difference - real estate property 156,394 103,789 Basis difference - intangibles 2,225 2,002 Other - temporary differences 31,503 9,406 Total gross deferred income tax assets 288,176 238,288 Valuation allowance (45,628 ) (35,266 ) Total deferred income tax assets, net of valuation allowance 242,548 203,022 Gross deferred income tax liabilities: Basis difference - real estate property 289,867 273,155 Basis difference - intangibles 64,714 14,374 Straight-line rent 5,172 14,269 Other - temporary differences 36,614 32,420 Total gross deferred income tax liabilities 396,367 334,218 Net deferred income tax liabilities $ 153,819 $ 131,196

Equity and Accumulated Other 39

Equity and Accumulated Other Comprehensive Loss, Net (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 and 2015 : December 31, 2016 December 31, 2015 Number of units Percentage of total Number of units Percentage of total Digital Realty Trust, Inc. 159,019,118 98.5 % 146,384,247 98.1 % Noncontrolling interests consist of: Common units held by third parties 1,141,814 0.7 % 1,421,314 1.0 % Incentive units held by employees and directors (see note 13) 1,333,849 0.8 % 1,412,012 0.9 % 161,494,781 100.0 % 149,217,573 100.0 %
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, 2016 , 2015 and 2014 : Common Incentive Total 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 ) Vesting of Class C Units (2007 Grant) — (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 Redemption of common units for shares of Digital Realty Trust, Inc. common stock (1) (279,500 ) — (279,500 ) Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1) — (150,993 ) (150,993 ) Cancellation of incentive units held by employees and directors (1,416 ) (1,416 ) Grant of incentive units to employees and directors — 74,246 74,246 As of December 31, 2016 1,141,814 1,333,849 2,475,663 (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, 2016 , 2015 and 2014 (in thousands): Date dividend Dividend payable date Series E Preferred Stock Series F Preferred Stock Series G Preferred Stock Series H Preferred Stock Series I Preferred Stock Common February 11, 2014 March 31, 2014 $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 106,743 (1) April 29, 2014 June 30, 2014 5,031 3,023 3,672 7,104 (2) — 112,357 (1) July 21, 2014 September 30, 2014 5,031 3,023 3,672 6,730 — 112,465 (1) November 4, 2014 December 31, 2014 for Preferred Stock; 5,031 3,023 3,672 6,730 — 112,538 (1) $ 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 (3) May 12, 2015 June 30, 2015 5,031 3,023 3,672 6,730 — 115,458 (3) August 11, 2015 September 30, 2015 5,031 3,023 3,672 6,730 — 115,454 (3) November 12, 2015 December 31, 2015 for Preferred Stock; 5,031 3,023 3,672 6,730 5,600 (4) 124,417 (3) $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 470,748 February 17, 2016 March 31, 2016 $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ 3,969 $ 131,587 (5) May 11, 2016 June 30, 2016 5,031 3,023 3,672 6,730 3,969 131,607 (5) August 10, 2016 September 30, 2016 — (6) 3,023 3,672 6,730 3,969 131,657 (5) November 9, 2016 December 30, 2016 for Preferred Stock; — 3,023 3,672 6,730 3,969 141,882 (5) $ 10,062 $ 12,092 $ 14,688 $ 26,920 $ 15,876 $ 536,733 Annual rate of dividend per share $ 1.75000 $ 1.65625 $ 1.46875 $ 1.84375 $ 1.58800 (1) $ 3.320 annual rate of dividend per share. (2) Represents a pro rata dividend from and including the original issue date to and including June 30, 2014. (3) $3.400 annual rate of dividend per share. (4) Represents a pro rata dividend from and including the original issue date to and including December 31, 2015 . (5) $3.520 annual rate of dividend per share. (6) Redeemed on September 15, 2016 for $25.35972 per share, or a redemption price of $25.00 per share, plus accrued and unpaid dividends up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were deducted in the computation of net income available to common stockholders.
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, 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 ) Net current period change (85,300 ) 41,395 (43,905 ) Reclassification to interest expense from interest rate swaps — 4,890 4,890 Balance as of December 31, 2016 $ (175,642 ) $ 40,037 $ (135,605 )

Capital and Accumulated Other40

Capital and Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 , 2015 and 2014 (in thousands): Date dividend Dividend payable date Series E Preferred Stock Series F Preferred Stock Series G Preferred Stock Series H Preferred Stock Series I Preferred Stock Common February 11, 2014 March 31, 2014 $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 106,743 (1) April 29, 2014 June 30, 2014 5,031 3,023 3,672 7,104 (2) — 112,357 (1) July 21, 2014 September 30, 2014 5,031 3,023 3,672 6,730 — 112,465 (1) November 4, 2014 December 31, 2014 for Preferred Stock; 5,031 3,023 3,672 6,730 — 112,538 (1) $ 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 (3) May 12, 2015 June 30, 2015 5,031 3,023 3,672 6,730 — 115,458 (3) August 11, 2015 September 30, 2015 5,031 3,023 3,672 6,730 — 115,454 (3) November 12, 2015 December 31, 2015 for Preferred Stock; 5,031 3,023 3,672 6,730 5,600 (4) 124,417 (3) $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 470,748 February 17, 2016 March 31, 2016 $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ 3,969 $ 131,587 (5) May 11, 2016 June 30, 2016 5,031 3,023 3,672 6,730 3,969 131,607 (5) August 10, 2016 September 30, 2016 — (6) 3,023 3,672 6,730 3,969 131,657 (5) November 9, 2016 December 30, 2016 for Preferred Stock; — 3,023 3,672 6,730 3,969 141,882 (5) $ 10,062 $ 12,092 $ 14,688 $ 26,920 $ 15,876 $ 536,733 Annual rate of dividend per share $ 1.75000 $ 1.65625 $ 1.46875 $ 1.84375 $ 1.58800 (1) $ 3.320 annual rate of dividend per share. (2) Represents a pro rata dividend from and including the original issue date to and including June 30, 2014. (3) $3.400 annual rate of dividend per share. (4) Represents a pro rata dividend from and including the original issue date to and including December 31, 2015 . (5) $3.520 annual rate of dividend per share. (6) Redeemed on September 15, 2016 for $25.35972 per share, or a redemption price of $25.00 per share, plus accrued and unpaid dividends up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were deducted in the computation of net income available to common stockholders.
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, 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 ) Net current period change (85,300 ) 41,395 (43,905 ) Reclassification to interest expense from interest rate swaps — 4,890 4,890 Balance as of December 31, 2016 $ (175,642 ) $ 40,037 $ (135,605 )
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, 2016 , 2015 and 2014 (in thousands): Date distribution Distribution payable date Series E Preferred Units Series F Preferred Units Series G Preferred Units Series H Preferred Units Series I Preferred Units Common February 11, 2014 March 31, 2014 $ 5,031 $ 3,023 $ 3,672 $ — $ — $ 109,378 (1) April 29, 2014 June 30, 2014 5,031 3,023 3,672 7,104 (2) — 115,008 (1) July 21, 2014 September 30, 2014 5,031 3,023 3,672 6,730 — 115,012 (1) November 4, 2014 December 31, 2014 for Preferred Units; 5,031 3,023 3,672 6,730 — 115,016 (1) $ 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 (3) May 12, 2015 June 30, 2015 5,031 3,023 3,672 6,730 — 117,938 (3) August 11, 2015 September 30, 2015 5,031 3,023 3,672 6,730 — 117,962 (3) November 12, 2015 December 31, 2015 for Preferred Units; 5,031 3,023 3,672 6,730 5,600 (4) 126,827 (3) $ 20,124 $ 12,092 $ 14,688 $ 26,920 $ 5,600 $ 480,623 February 17, 2016 March 31, 2016 $ 5,031 $ 3,023 $ 3,672 $ 6,730 $ 3,969 $ 131,587 (5) May 11, 2016 June 30, 2016 5,031 3,023 3,672 6,730 3,969 131,607 (5) August 10, 2016 September 30, 2016 — (6) 3,023 3,672 6,730 3,969 131,657 (5) November 9, 2016 December 31, 2016 for Preferred Units; — 3,023 3,672 6,730 3,969 144,193 (5) $ 10,062 $ 12,092 $ 14,688 $ 26,920 $ 15,876 $ 539,044 Annual rate of distribution per unit $1.750 $1.656 $1.469 $1.844 $1.588 (1) $ 3.320 annual rate of distribution per unit. (2) Represents a pro rata distribution from and including the original issue date to and including June 30, 2014. (3) $3.400 annual rate of distribution per unit. (4) Represents a pro rata distribution from and including the original issue date to and including December 31, 2015. (5) $3.520 annual rate of distribution per unit. (6) Redeemed on September 15, 2016 for $25.35972 per unit, or a redemption price of $25.00 per unit, plus accrued and unpaid distributions up to but not including the redemption date of approximately $4.1 million in the aggregate. In connection with the redemption, the previously incurred offering costs of approximately $10.3 million were deducted in the computation of net income available to common unitholders.
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, 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 ) Net current period change (86,621 ) 41,998 (44,623 ) Reclassification to interest expense from interest rate swaps — 4,968 4,968 Balance as of December 31, 2016 $ (180,504 ) $ 39,885 $ (140,619 )

Incentive Plan (Tables)

Incentive Plan (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 . Unvested Long-term Incentive Units Units Weighted-Average Unvested, beginning of period 278,301 $ 62.85 Granted 29,544 87.18 Vested (175,975 ) 64.35 Cancelled or expired (3,048 ) 54.48 Unvested, end of period 128,822 66.58
Schedule of Share-based Compensation, Performance Based Awards	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 %
Schedule of Share-Based Payment Award Valuation Assumptions	Assumptions used in the valuations are summarized as follows: Award Date Expected Stock Price Volatility Risk-Free Interest Rate February 11, 2014 33% 0.67% February 24, 2015 24% 1.00% January 1, 2016 22% 1.32% February 16, 2016 26% 0.89%
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, 2016 : Year Ended December 31, 2016 Shares Weighted average exercise price Options outstanding, beginning of period 51,622 $ 41.04 Exercised (33,948 ) 40.68 Options outstanding, end of period 17,674 $ 41.73 Exercisable, end of period 17,674 $ 41.73
Summary of Stock Option Outstanding And Exercisable	The following table summarizes information about stock options outstanding and exercisable as of December 31, 2016 : Options outstanding and exercisable Exercise price Number outstanding Weighted average remaining contractual life (years) Weighted average exercise price Aggregate intrinsic value $41.73 17,674 0.33 $ 41.73 $ 999,111
Schedule of Restricted Stock Activity	Below is a summary of our restricted stock activity for the year ended December 31, 2016 . Unvested Restricted Stock Shares Weighted-Average Unvested, beginning of period 271,901 $ 61.47 Granted (1) 162,685 83.58 Vested (120,169 ) 61.30 Cancelled or expired (39,775 ) 67.22 Unvested, end of period 274,642 73.81 (1) All restricted stock awards granted in 2016 are subject only to service conditions.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	As of December 31, 2016 and December 31, 2015 , 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 $ 206,000 (1) $ 206,000 (1) Swap 0.932 Jun 18, 2012 Apr 18, 2017 $ (90 ) (6) $ (416 ) 54,905 (1) 54,905 (1) Swap 0.670 Aug 6, 2012 Apr 6, 2017 16 (6) 69 — 75,000 (1) Swap 0.500 Aug 6, 2012 Apr 6, 2016 — (10 ) 75,000 (1) — Swap 1.016 Apr 6, 2016 Jan 6, 2021 1,911 (6) — 75,000 (1) — Swap 1.164 Jan 15, 2016 Jan 15, 2021 1,487 (6) — 300,000 (2) — Swap 1.435 Jan 15, 2016 Jan 15, 2023 8,128 (6) — 130,850 (3) 133,579 (3) Swap 0.925 Jul 17, 2012 Apr 18, 2017 18 (6) 1,500 209,132 (4) — Swap 0.792 Jan 15, 2016 Jan 15, 2019 (1,818 ) (6) — 73,294 (5) — Swap 0.779 Jan 15, 2016 Jan 15, 2021 1,556 (6) — $ 1,124,181 $ 469,484 $ 11,208 $ 1,143 (1) Represents portions of the U.S. dollar tranche of the 5 -Year Term Loan. (2) Represents the U.S. dollar tranche of the 7 -Year Term Loan. (3) Represents a portion of the Singapore dollar tranche of the 5 -Year Term Loan. Translation to U.S. dollars is based on exchange rates of $0.69 to 1.00 SGD as of December 31, 2016 and $0.70 to 1.00 SGD as of December 31, 2015 . (4) Represents the British pound sterling tranche of the 5 -Year Term Loan. Translation to U.S. dollars is based on exchange rate of $1.23 to £1.00 as of December 31, 2016 . (5) Represents the Canadian dollar tranche of the 5 -Year Term Loan. Translation to U.S. dollars is based on exchange rate of $0.74 to 1.00 CAD as of December 31, 2016 . (6) Balance recorded in other assets in the consolidated balance sheets if positive and recorded in accounts payable and other accrued liabilities in the consolidated balance sheets if negative. As of December 31, 2016 , the Company had the following outstanding derivatives that were designated as hedges under qualifying hedging relationships, which is recorded in other assets in the consolidated balance sheets (notional and fair value amounts in thousands): Foreign Currency Derivative Number of Instruments Notional Amount Sold Notional Amount Purchased Maturity Date Fair Value Currency forward contracts 4 GBP 357,299 USD 518,469 12/15/2017 $ 73,498

Fair Value of Instruments (Tabl

Fair Value of Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Estimated Fair Value and Carrying Amounts	As of December 31, 2016 and December 31, 2015 , the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured term loan, unsecured senior notes and mortgage loans were as follows (in thousands): Categorization As of December 31, 2016 As of December 31, 2015 Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Global revolving credit facility (1)(5) Level 2 $ 210,077 $ 210,077 $ 967,884 $ 967,884 Unsecured term loan (2)(6) Level 2 1,488,498 1,488,498 924,568 924,568 Unsecured senior notes (3)(4)(7) Level 2 4,428,074 4,179,171 3,868,979 3,738,606 Mortgage loans (3)(8) Level 2 3,217 3,250 313,717 303,183 $ 6,129,866 $ 5,880,996 $ 6,075,148 $ 5,934,241 (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 5.875% 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 3.950% 2022 Notes, 3.625% 2022 Notes, 2023 Notes, 2024 Notes, 4.750% 2025 Notes and 4.250% 2025 Notes are valued based on quoted market prices. (4) The carrying value of the 5.875% 2020 Notes, 3.400% 2020 Notes, 2021 Notes, 3.625% 2022 Notes, 3.950% 2022 Notes, 2023 Notes, 2024 Notes and 4.250% 2025 Notes are net of discount of $15.6 million and $17.9 million in the aggregate as of December 31, 2016 and December 31, 2015 , respectively. (5) The estimated fair value and carrying value are exclusive of deferred financing costs of $10.9 million and $7.6 million as of December 31, 2016 and December 31, 2015 , respectively. (6) The estimated fair value and carrying value are exclusive of deferred financing costs of $6.1 million and $1.3 million as of December 31, 2016 and December 31, 2015 , respectively. (7) The estimated fair value and carrying value are exclusive of deferred financing costs of $25.4 million and $26.0 million as of December 31, 2016 and December 31, 2015 , respectively. (8) The estimated fair value and carrying value are exclusive of deferred financing costs of $0.0 million and $0.3 million as of December 31, 2016 and December 31, 2015 , respectively.

Tenant Leases (Tables)

Tenant Leases (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 , under non-cancelable operating leases are as follows (in thousands): 2017 $ 1,608,054 2018 1,313,925 2019 1,112,743 2020 876,231 2021 722,729 Thereafter 2,387,481 Total $ 8,021,163

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
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, 2016 was as follows (in thousands): 2017 $ 70,079 2018 73,474 2019 78,578 2020 81,403 2021 81,803 Thereafter 665,803 Total $ 1,051,140
Schedule of Future Minimum Lease Payments for Capital Leases	Future minimum lease payments and their present value for property under capital leases as of December 31, 2016 , are as follows: 2017 $ 10,263 2018 10,268 2019 11,909 2020 12,004 2021 12,099 Thereafter 196,299 252,842 Less amount representing interest (90,658 ) Present value $ 162,184

Quarterly Financial Informati46

Quarterly Financial Information (Digital Realty Trust, Inc.) (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Summary of Selected Quarterly Financial Data	The tables below reflect selected quarterly information for the years ended December 31, 2016 and 2015 . 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 $ 576,787 $ 546,293 $ 514,934 $ 504,199 Net income 96,140 222,435 50,944 62,333 Net income attributable to Digital Realty Trust, Inc. 95,075 219,188 50,375 61,549 Preferred stock dividends and issuance costs 17,393 31,858 22,424 22,424 Net income available to common stockholders 77,682 187,330 27,951 39,125 Basic net income per share available to $ 0.49 $ 1.27 $ 0.19 $ 0.27 Diluted net income per share available to $ 0.49 $ 1.25 $ 0.19 $ 0.27 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 (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

Quarterly Financial Informati47

Quarterly Financial Information (Digital Realty Trust, L.P.) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information [Line Items]
Summary of Selected Quarterly Financial Data	The tables below reflect selected quarterly information for the years ended December 31, 2016 and 2015 . 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 $ 576,787 $ 546,293 $ 514,934 $ 504,199 Net income 96,140 222,435 50,944 62,333 Net income attributable to Digital Realty Trust, Inc. 95,075 219,188 50,375 61,549 Preferred stock dividends and issuance costs 17,393 31,858 22,424 22,424 Net income available to common stockholders 77,682 187,330 27,951 39,125 Basic net income per share available to $ 0.49 $ 1.27 $ 0.19 $ 0.27 Diluted net income per share available to $ 0.49 $ 1.25 $ 0.19 $ 0.27 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 (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
Digital Realty Trust, L.P.
Quarterly Financial Information [Line Items]
Summary of Selected Quarterly Financial Data	The tables below reflect selected quarterly information for the years ended December 31, 2016 and 2015 . 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 $ 576,787 $ 546,293 $ 514,934 $ 504,199 Net income 96,140 222,435 50,944 62,333 Net income attributable to Digital Realty Trust, L.P. 96,229 222,212 50,832 62,212 Preferred unit distributions and issuance costs associated 17,393 31,858 22,424 22,424 Net income available to common unitholders 78,836 190,354 28,408 39,788 Basic net income per unit available to common unitholders $ 0.49 $ 1.27 $ 0.19 $ 0.27 Diluted net income per unit available to common unitholders $ 0.49 $ 1.25 $ 0.19 $ 0.27 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) (16,785 ) 56,689 137,997 122,325 Net income (loss) 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 (loss) available to common unitholders (40,959 ) 38,116 119,432 103,754 Basic net income (loss) per unit available to common unitholders $ (0.28 ) $ 0.28 $ 0.86 $ 0.75 Diluted net income (loss) per unit available to common unitholders $ (0.28 ) $ 0.27 $ 0.86 $ 0.75

Subsequent Events (Tables)

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Schedule of Dividends Declared and Distributions Per Unit	On March 1, 2017, the Company declared the following dividends per share. The Operating Partnership will make an equivalent distribution per unit. Share / Unit Class Series F Series G Series H Series I Preferred Stock and Unit Common stock Dividend and distribution amount $ 0.414063 $ 0.367188 $ 0.460938 $ 0.396875 $ 0.930000 Dividend and distribution payable date March 31, 2017 March 31, 2017 March 31, 2017 March 31, 2017 March 31, 2017 Dividend and distribution payable to holders of record on March 15, 2017 March 15, 2017 March 15, 2017 March 15, 2017 March 15, 2017 Annual equivalent rate of dividend and distribution $ 1.656 $ 1.469 $ 1.844 $ 1.588 $ 3.720

Organization and Description 49

Organization and Description of Business (Narrative) (Details)	Dec. 31, 2016property
Organization and Description of Business [Line Items]
Number of real estate properties	145
Common Interest
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	98.50%
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	104
Europe
Organization and Description of Business [Line Items]
Number of real estate properties	32
Asia
Organization and Description of Business [Line Items]
Number of real estate properties	4
Australia
Organization and Description of Business [Line Items]
Number of real estate properties	3
Canada
Organization and Description of Business [Line Items]
Number of real estate properties	2
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, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2016USD ($)segment	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Summary Of Significant Accounting Policies [Line Items]
Period in which short-term investment become cash equivalents									90 days
Goodwill	$ 752,970,000				$ 330,664,000				$ 752,970,000	$ 330,664,000
Interest capitalized									16,300,000	12,900,000	$ 20,400,000
Compensation costs, leasing and construction activities									68,900,000	56,800,000	50,100,000
Cash flows from capitalized leasing costs									47,300,000	49,900,000	49,000,000
Deferred leasing costs, net	253,700,000				236,000,000				253,700,000	236,000,000
Gain (loss) on cash flow hedge ineffectiveness									(3,100,000)	(1,600,000)	800,000
Assets or liabilities for uncertain tax positions	0				0				0	0
Interest or penalties from uncertain tax positions									0	0	0
Non-cash gain on lease termination	29,200,000								0	14,355,000	0
Asset retirement obligations	5,700,000				1,300,000				$ 5,700,000	1,300,000
Number of reportable segments | segment									1
Operating revenue	576,787,000	$ 546,293,000	$ 514,934,000	$ 504,199,000	500,443,000	$ 435,989,000	$ 420,295,000	$ 406,609,000	$ 2,142,213,000	1,763,336,000	1,616,438,000
Restricted cash	11,508,000				18,009,000				11,508,000	18,009,000
Global revolving credit facility
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs	10,900,000				7,600,000				10,900,000	7,600,000
Unsecured term loan
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs	6,100,000				1,300,000				$ 6,100,000	1,300,000
Accounting Standards Update 2015-03 [Member] | Deferred Financing Costs, Net
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs					(35,200,000)					(35,200,000)
Accounting Standards Update 2015-03 [Member] | Long-Term Line of Credit | Global revolving credit facility
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs					7,600,000					7,600,000
Accounting Standards Update 2015-03 [Member] | Long-Term Line of Credit | Unsecured term loan
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs					1,300,000					1,300,000
Accounting Standards Update 2015-03 [Member] | Unsecured Debt
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs					26,000,000					26,000,000
Accounting Standards Update 2015-03 [Member] | Secured Debt
Summary Of Significant Accounting Policies [Line Items]
Deferred financing costs					300,000					300,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
MSA term									1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
MSA term									3 years
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
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
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
United States
Summary Of Significant Accounting Policies [Line Items]
Operating revenue									$ 1,700,000,000	1,400,000,000	1,200,000,000
Long-lived assets	6,300,000,000				6,100,000,000				6,300,000,000	6,100,000,000	5,400,000,000
Non-US
Summary Of Significant Accounting Policies [Line Items]
Operating revenue									400,000,000	400,000,000	400,000,000
Long-lived assets	2,600,000,000				2,600,000,000				2,600,000,000	2,600,000,000	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	$ 1,500,000,000				$ 1,600,000,000				$ 1,500,000,000	$ 1,600,000,000	$ 1,700,000,000
United Kingdom | Sales
Summary Of Significant Accounting Policies [Line Items]
Concentration risk									11.10%	12.30%	13.30%
United Kingdom | Long-Lived Assets
Summary Of Significant Accounting Policies [Line Items]
Concentration risk									16.60%	18.80%	21.30%

Investments in Real Estate (Sch

Investments in Real Estate (Schedule of Real Estate Property Acquisitions) (Details) $ in Thousands, € in Millions	Aug. 01, 2016USD ($)	Aug. 01, 2016EUR (€)	Jul. 05, 2016USD ($)property	Oct. 09, 2015USD ($)	Dec. 31, 2016USD ($)property	Dec. 31, 2015USD ($)	Sep. 30, 2016property
Real Estate Properties [Line Items]
Land					$ 746,822	$ 689,573
Acquired Ground Lease					11,335	12,639
Building and Improvements					10,267,525	9,676,427
Tenant Improvements					532,787	536,734
Accumulated Depreciation and Amortization					(2,668,509)	(2,251,268)
Net investments in properties					8,889,960	8,664,105
Direct and accrued costs related to work in progress					$ 900,000	700,000
Purchase price						95,200
Number of real estate properties | property					145
Consideration transferred				$ 1,886,000
Land Parcels
Real Estate Properties [Line Items]
Purchase price					$ 47,600
Number of real estate properties | property							4
Europe Portfolio Acquisition and Land Parcels
Real Estate Properties [Line Items]
Purchase price					866,500
Europe Portfolio Acquisition
Real Estate Properties [Line Items]
Number of real estate properties | property			8
Consideration transferred	$ 212,000	€ 190	$ 818,900
Internet Gateway Data Centers
Real Estate Properties [Line Items]
Land					109,714	109,389
Acquired Ground Lease					0	0
Building and Improvements					1,924,869	1,440,594
Tenant Improvements					93,472	95,185
Accumulated Depreciation and Amortization					(675,725)	(607,452)
Net investments in properties					1,452,330	1,037,716
Data Centers
Real Estate Properties [Line Items]
Land					598,475	539,298
Acquired Ground Lease					10,014	11,317
Building and Improvements					8,052,356	7,438,334
Tenant Improvements					431,444	433,679
Accumulated Depreciation and Amortization					(1,924,694)	(1,575,589)
Net investments in properties					7,167,595	6,847,039
Technology Manufacturing
Real Estate Properties [Line Items]
Land					20,199	20,199
Acquired Ground Lease					1,321	1,322
Building and Improvements					57,766	56,254
Tenant Improvements					6,333	6,333
Accumulated Depreciation and Amortization					(24,595)	(22,677)
Net investments in properties					61,024	61,431
Technology Office
Real Estate Properties [Line Items]
Land					12,398	12,142
Acquired Ground Lease					0	0
Building and Improvements					73,650	49,470
Tenant Improvements					1,460	1,459
Accumulated Depreciation and Amortization					(21,407)	(18,564)
Net investments in properties					66,101	44,507
Other
Real Estate Properties [Line Items]
Land					6,036	8,545
Acquired Ground Lease					0	0
Building and Improvements					158,884	691,775
Tenant Improvements					78	78
Accumulated Depreciation and Amortization					(22,088)	(26,986)
Net investments in properties					$ 142,910	$ 673,412

Investments in Real Estate (Pur

Investments in Real Estate (Purchase Price Allocation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 752,970	$ 330,664
Transaction expenses	20,491	$ 17,400	$ 1,303
Europe Portfolio Acquisition
Business Acquisition [Line Items]
Investments in real estate	270,195
Goodwill	445,137
Above/below-market lease value, net	4,817
Capital lease and other long-term obligations	(118,923)
Deferred taxes	(50,199)
Total purchase price	818,904
Transaction expenses	6,900
Revenue of acquiree since acquisition	55,300
Expense of acquiree since acquisition	20,100
Europe Portfolio Acquisition | Tenant relationship value
Business Acquisition [Line Items]
Intangibles	249,070
Europe Portfolio Acquisition | Acquired in-place lease value
Business Acquisition [Line Items]
Intangibles	$ 18,807

Investments in Real Estate (Pro

Investments in Real Estate (Pro Forma) (Details) - Europe Portfolio Acquisition - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition, Pro Forma Information [Abstract]
Total revenues	$ 2,199,358	$ 1,875,783
Net income (loss) available to common stockholders	$ 343,235	$ 239,201
Net income (loss) per share available to common stockholders - basic and diluted (in dollars per share)	$ 2.28	$ 1.72

Investments in Real Estate (Acq

Investments in Real Estate (Acquisition - Telx) (Details) - USD ($) $ in Thousands	Oct. 09, 2015	Oct. 08, 2015	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Consideration transferred	$ 1,886,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill			$ 752,970	$ 752,970	$ 330,664
Gain (loss) on settlement of pre-existing lease contracts			$ 29,200	0	14,355	$ 0
Transaction expenses				$ 20,491	17,400	$ 1,303
Telx Acquisition
Business Acquisition [Line Items]
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
Write-off of deferred rent receivables		$ 75,300
Transaction expenses					$ 17,400
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 (A55

Investments in Real Estate (Acquisitions) (Details) - USD ($) $ in Millions	Dec. 18, 2015	Nov. 16, 2015	Jun. 25, 2015	Apr. 15, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Purchase price					$ 95.2
Deer Park 3
Business Acquisition [Line Items]
Purchase price				$ 1.6
3 Loyang Way
Business Acquisition [Line Items]
Purchase price			$ 45
Renewal term			28 years
Digital Loudoun III
Business Acquisition [Line Items]
Purchase price		$ 43
Digital Frankfurt
Business Acquisition [Line Items]
Purchase price	$ 5.6

Investments in Real Estate (Dis

Investments in Real Estate (Dispositions) (Details) ft² in Thousands, $ in Thousands, € in Millions

Aug. 01, 2016USD ($)

Aug. 01, 2016EUR (€)

Jul. 11, 2016USD ($)ft²property

Jul. 05, 2016USD ($)property

Jan. 21, 2016USD ($)

Dec. 30, 2015USD ($)

Oct. 09, 2015USD ($)

Apr. 30, 2015USD ($)

Mar. 31, 2015USD ($)

Feb. 05, 2015USD ($)

Sep. 30, 2016USD ($)

Dec. 31, 2016USD ($)property

Dec. 31, 2015USD ($)property

Dec. 31, 2014USD ($)property

Jun. 30, 2016property

Dispositions

Gross Proceeds

$ 364,000

$ 215,300

Gain on Sale

169,800

Gain (Loss) on Sale

$ 169,902

94,604

$ 15,945

Number of real estate properties | property

145

Consideration transferred

$ 1,886,000

Impairment of investments in real estate

$ 0

0

$ 126,470

Assets

12,192,585

11,416,063

Total liabilities

$ 7,060,288

$ 6,879,561

Europe Portfolio Acquisition

Dispositions

Gain on Sale

$ 144,300

Number of real estate properties | property

8

Consideration transferred

$ 212,000

€ 190

$ 818,900

Held-for-sale

Dispositions

Number of real estate properties | property

3

8

Assets

$ 56,100

$ 180,100

Total liabilities

$ 2,600

$ 5,800

47700 Kato Road and 1055 Page Avenue

Dispositions

Gross Proceeds

$ 37,500

Gain on Sale

$ 1,000

Data center porfolio

Dispositions

Gross Proceeds

$ 114,500

Gain on Sale

$ 24,500

114 Rue Ambroise Croizat

Dispositions

Gross Proceeds

212,000

Gain on Sale

$ 144,300

Data Center Portfolio, St Louis and Northern Virginia | Disposed of by Sale

Dispositions

Gain on Sale

$ 24,500

Number of real estate properties | property

4

Square footage of net rentable space | ft²

454

Value of property sale transaction

$ 114,500

Data Center Portfolio, St Louis and Northern Virginia | Disposed of by Sale | St. Louis

Dispositions

Number of real estate properties | property

2

Data Center Portfolio, St Louis and Northern Virginia | Disposed of by Sale | Northern Virginia

Dispositions

Number of real estate properties | property

2

Data Center Portfolio, St Louis and Northern Virginia | Held-for-sale

Dispositions

Number of real estate properties | property

4

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)

Midwest, Northeast, and West Regions

Dispositions

Number of real estate properties | property

5

Impairment of investments in real estate

$ 126,500

Investment in Unconsolidated 57

Investment in Unconsolidated Joint Ventures (Narrative) (Details) $ in Thousands	Oct. 17, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2016USD ($)propertyjoint_venture	Dec. 31, 2015USD ($)
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity		$ 0	$ 0	$ 0
Number of real estate properties | property			145
Investment in unconsolidated joint ventures		$ 94,729	$ 106,402	$ 106,107
2001 Sixth Avenue, 2020 Fifth Avenue, 33 Chun Choi Street
Schedule of Equity Method Investments [Line Items]
Number of joint ventures | joint_venture			3
2001 Sixth Avenue
Schedule of Equity Method Investments [Line Items]
Ownership percentage in the Operating Partnership		50.00%	50.00%	50.00%
2020 Fifth Avenue
Schedule of Equity Method Investments [Line Items]
Ownership percentage in the Operating Partnership		50.00%	50.00%	50.00%
33 Chun Choi Street (Hong Kong)
Schedule of Equity Method Investments [Line Items]
Ownership percentage in the Operating Partnership		50.00%	50.00%	50.00%
Prudential Real Estate Investors and Griffin Capital Essential Asset REIT, Inc.
Schedule of Equity Method Investments [Line Items]
Number of joint ventures | joint_venture			2
PREI
Schedule of Equity Method Investments [Line Items]
Ownership percentage in the Operating Partnership		20.00%	20.00%	20.00%
Number of joint ventures | property			1
Number of real estate properties | property			10
GCEAR
Schedule of Equity Method Investments [Line Items]
Ownership percentage in the Operating Partnership		20.00%	20.00%	20.00%
Number of real estate properties | property			1
1101 Space Park Drive
Schedule of Equity Method Investments [Line Items]
Ownership percentage in the Operating Partnership			17.00%
Southwestern United States and Mexico Properties
Schedule of Equity Method Investments [Line Items]
Net proceeds from joint venture	$ 31,700
Gain on sale of investment		$ 14,600
Southwestern United States and Mexico Properties | Other Assets
Schedule of Equity Method Investments [Line Items]
Values of investment	$ 17,100

Investment in Unconsolidated 58

Investment in Unconsolidated Joint Ventures (Summary of Financial Information for Joint Ventures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Net Investment in Properties	$ 741,228	$ 758,582	$ 779,752
Total Assets	922,694	935,990	942,107
Mortgage Loans	457,141	460,023	461,548
Total Liabilities	549,997	558,310	569,895
Equity / (Deficit)	372,697	377,679	372,212
Our investment in and share of equity in earnings of unconsolidated joint ventures	106,402	106,107	94,729
Revenues	137,518	129,649	102,303
Property Operating Expense	(44,126)	(36,146)	(26,873)
Net Operating Income	93,392	93,503	75,430
Net Income (Loss)	38,214	37,350	30,577
Investment in and share of net income (loss)	$ 17,104	$ 15,491	$ 13,289
2001 Sixth Avenue
Schedule of Equity Method Investments [Line Items]
% Ownership	50.00%	50.00%	50.00%
Net Investment in Properties	$ 27,342	$ 33,757	$ 37,620
Total Assets	43,258	44,732	42,537
Mortgage Loans	101,394	102,998	104,523
Total Liabilities	106,241	107,807	110,749
Equity / (Deficit)	(62,983)	(63,075)	(68,212)
Revenues	45,518	43,734	39,807
Property Operating Expense	(15,574)	(15,205)	(14,707)
Net Operating Income	29,944	28,529	25,100
Net Income (Loss)	$ 16,374	$ 14,171	$ 11,982
2020 Fifth Avenue
Schedule of Equity Method Investments [Line Items]
% Ownership	50.00%	50.00%	50.00%
Net Investment in Properties	$ 45,973	$ 46,633	$ 47,239
Total Assets	55,005	55,257	55,123
Mortgage Loans	47,000	47,000	47,000
Total Liabilities	47,612	47,857	47,795
Equity / (Deficit)	7,393	7,400	7,328
Revenues	8,788	8,474	8,308
Property Operating Expense	(1,500)	(1,177)	(1,086)
Net Operating Income	7,288	7,297	7,222
Net Income (Loss)	$ 4,821	$ 4,840	$ 4,844
33 Chun Choi Street (Hong Kong)
Schedule of Equity Method Investments [Line Items]
% Ownership	50.00%	50.00%	50.00%
Net Investment in Properties	$ 134,249	$ 138,742	$ 143,014
Total Assets	184,855	179,525	165,912
Mortgage Loans	0	0	0
Total Liabilities	3,291	4,173	10,210
Equity / (Deficit)	181,564	175,352	155,702
Revenues	18,856	17,700	8,671
Property Operating Expense	(6,636)	(5,358)	(2,625)
Net Operating Income	12,220	12,342	6,046
Net Income (Loss)	$ 6,315	$ 4,480	$ 2,976
PREI
Schedule of Equity Method Investments [Line Items]
% Ownership	20.00%	20.00%	20.00%
Net Investment in Properties	$ 409,876	$ 419,498	$ 429,358
Total Assets	468,298	481,175	492,494
Mortgage Loans	207,270	208,000	208,000
Total Liabilities	288,325	293,276	296,480
Equity / (Deficit)	179,973	187,898	196,014
Revenues	41,075	40,011	39,467
Property Operating Expense	(8,503)	(6,157)	(6,144)
Net Operating Income	32,572	33,854	33,323
Net Income (Loss)	$ 13,615	$ 15,121	$ 12,378
GCEAR
Schedule of Equity Method Investments [Line Items]
% Ownership	20.00%	20.00%	20.00%
Net Investment in Properties	$ 116,949	$ 119,952	$ 122,521
Total Assets	162,863	175,301	186,041
Mortgage Loans	101,477	102,025	102,025
Total Liabilities	104,393	105,197	104,661
Equity / (Deficit)	58,470	70,104	81,380
Revenues	19,742	19,730	6,050
Property Operating Expense	(7,808)	(8,249)	(2,311)
Net Operating Income	11,934	11,481	3,739
Net Income (Loss)	$ (1,396)	$ (1,262)	$ (1,603)
1101 Space Park Drive
Schedule of Equity Method Investments [Line Items]
% Ownership	17.00%
Net Investment in Properties	$ 6,839
Total Assets	8,415
Mortgage Loans	0
Total Liabilities	135
Equity / (Deficit)	8,280
Revenues	3,539
Property Operating Expense	(4,105)
Net Operating Income	(566)
Net Income (Loss)	$ (1,515)

Acquired Intangible Assets an59

Acquired Intangible Assets and Liabilities (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization of below market leases		$ 7,500,000	$ 9,300,000	$ 10,000,000
Amortization of intangible assets		$ 180,608,000	105,833,000	82,310,000
Expected average remaining lives of acquired below market leases		8 years 2 days
Acquired in-place lease value
Finite-Lived Intangible Assets [Line Items]
Expected average remaining lives		6 years 5 months 16 days
Amortization of intangible assets		$ 52,600,000	46,200,000	62,200,000
Weighted average remaining contractual life for acquired leases excluding renewals or extensions		6 years 11 months 23 days
Acquired above-market leases
Finite-Lived Intangible Assets [Line Items]
Expected average remaining lives		4 years 1 month 17 days
Tenant relationship value
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 67,200,000	$ 14,500,000	0
Remaining amortization period			12 years 11 months 24 days
Trade name
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ 6,900,000	$ 400,000	$ 0
Write-down of intangible assets	$ 6,100,000

Acquired Intangible Assets an60

Acquired Intangible Assets and Liabilities (Summary of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Acquired below-market leases
Gross amount	$ 283,899	$ 294,791
Accumulated amortization	(202,000)	(193,677)
Net	81,899	101,114
Acquired in-place lease value
Finite-Lived Intangible Assets [Line Items]
Gross amount	896,693	901,381
Accumulated amortization	(517,443)	(472,933)
Net	379,250	428,448
Tenant relationship value
Finite-Lived Intangible Assets [Line Items]
Gross amount	971,519	734,800
Accumulated amortization	(82,069)	(14,495)
Net	889,450	720,305
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross amount	7,300	7,300
Accumulated amortization	(7,300)	(417)
Net	0	6,883
Acquired above-market leases
Finite-Lived Intangible Assets [Line Items]
Gross amount	110,142	122,311
Accumulated amortization	(87,961)	(89,613)
Net	$ 22,181	$ 32,698

Acquired Intangible Assets an61

Acquired Intangible Assets and Liabilities (Schedule of Estimated Annual Amortization Of Below Market Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Net	$ 81,899	$ 101,114
Below-Market Leases, Net of Above Market Leases
Finite-Lived Intangible Assets [Line Items]
2,017	7,216
2,018	5,566
2,019	5,698
2,020	7,422
2,021	7,114
Thereafter	26,702
Net	$ 59,718

Acquired Intangible Assets an62

Acquired Intangible Assets and Liabilities (Schedule of Future Amortization Finite Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Acquired in-place lease value
Finite-Lived Intangible Assets [Line Items]
2,017	$ 54,088
2,018	47,640
2,019	40,515
2,020	36,561
2,021	33,958
Thereafter	166,488
Net	379,250	$ 428,448
Customer contracts and trade names
Finite-Lived Intangible Assets [Line Items]
2,017	69,608
2,018	69,608
2,019	69,608
2,020	69,608
2,021	69,608
Thereafter	541,410
Net	$ 889,450

Debt of The Company (Details)

Debt of The Company (Details) - Unsecured senior notes	Dec. 31, 2016
5.875% notes due 2020
Debt Instrument [Line Items]
Interest rate	5.875%
5.250% notes due 2021
Debt Instrument [Line Items]
Interest rate	5.25%
3.950% notes due 2022
Debt Instrument [Line Items]
Interest rate	3.95%
3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate	3.625%
4.750% notes due 2023
Debt Instrument [Line Items]
Interest rate	4.75%
4.250% notes due 2025
Debt Instrument [Line Items]
Interest rate	4.25%
3.400% notes due 2020
Debt Instrument [Line Items]
Interest rate	3.40%
4.750% notes due 2025
Debt Instrument [Line Items]
Interest rate	4.75%
2.625% notes due 2024
Debt Instrument [Line Items]
Interest rate	2.625%

Debt of the Operating Partner64

Debt of the Operating Partnership (Debt Schedule) (Details) $ in Thousands	Jan. 15, 2016	Dec. 31, 2016USD ($)extension	Dec. 31, 2016	Dec. 31, 2016$ / SGD	Dec. 31, 2016$ / €	Dec. 31, 2016$ / £	Dec. 31, 2016$ / ¥	Dec. 31, 2016$ / CAD	Dec. 31, 2016$ / AUD	Dec. 31, 2016$ / HKD	Dec. 31, 2015USD ($)	Dec. 31, 2015	Dec. 31, 2015$ / SGD	Dec. 31, 2015$ / €	Dec. 31, 2015$ / £	Dec. 31, 2015$ / ¥	Dec. 31, 2015$ / CAD	Dec. 31, 2015$ / AUD	Dec. 31, 2015$ / HKD	Apr. 01, 2014USD ($)$ / £	Jan. 18, 2013USD ($)	Sep. 24, 2012USD ($)	Mar. 08, 2011USD ($)	Jan. 28, 2010USD ($)
Global revolving credit facility
Debt Instrument [Line Items]
Deferred financing costs, net		$ (10,900)									$ (7,600)
Unsecured term loan
Debt Instrument [Line Items]
Deferred financing costs, net		(6,100)									(1,300)
Senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		(25,400)									(26,000)
Senior notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Stated interest rate			5.875%
Senior notes | 5.250% notes due 2021
Debt Instrument [Line Items]
Stated interest rate			5.25%
Senior notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Stated interest rate			3.625%
Senior notes | 2.625% notes due 2024
Debt Instrument [Line Items]
Stated interest rate			2.625%
Senior notes | 4.250% notes due 2025
Debt Instrument [Line Items]
Stated interest rate			4.25%
Senior notes | 4.750% notes due 2025
Debt Instrument [Line Items]
Stated interest rate			4.25%
Mortgage loans
Debt Instrument [Line Items]
Deferred financing costs, net		0									(300)
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Long-term debt, gross		5,896,311
Total		5,838,607									5,899,037
Unamortized discounts		(15,649)
Total		5,880,996
Unamortized net premiums		$ 334
Digital Realty Trust, L.P. | Unsecured term loan — 5-year
Debt Instrument [Line Items]
Debt instrument term	5 years
Basis spread on variable rate		1.10%
Digital Realty Trust, L.P. | Unsecured term loan — 7-year
Debt Instrument [Line Items]
Debt instrument term	7 years
Basis spread on variable rate		1.55%
Digital Realty Trust, L.P. | Global revolving credit facility
Debt Instrument [Line Items]
Long-term debt, gross		$ 210,077									967,884
Deferred financing costs, net		(10,868)									(7,613)
Total		199,209									960,271
Unamortized discounts		0
Total		210,077
Unamortized net premiums		$ 0
Basis spread on variable rate		1.00%
Commitment fee percentage		0.20%
Number of extension options | extension		2
Revolving credit facility commitments extension		6 months
Derivative forward exchange rate (in dollars per share)				0.69	1.05	1.23	0.01	0.74		0.13			0.70	1.09	1.47	0.01	0.72	0.73	0.13
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate
Debt Instrument [Line Items]
Long-term debt, gross		$ 210,077									967,884
Basis spread on variable rate		1.00%
Weighted-average interest rate			1.39%									1.53%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | U.S. dollar ($)
Debt Instrument [Line Items]
Long-term debt, gross		$ 105,000									274,000
Weighted-average interest rate			1.67%									1.46%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | British pound sterling (£)
Debt Instrument [Line Items]
Long-term debt, gross		11,106									95,784
Weighted-average interest rate			1.25%									1.61%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | Euro (€)
Debt Instrument [Line Items]
Long-term debt, gross		15,250									280,565
Weighted-average interest rate			0.63%									0.90%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | Australian dollar (AUD)
Debt Instrument [Line Items]
Long-term debt, gross		0									96,831
Weighted-average interest rate			0.00%									3.16%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | Hong Kong dollar (HKD)
Debt Instrument [Line Items]
Long-term debt, gross		1,728									86,082
Weighted-average interest rate			1.66%									1.33%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | Japanese yen (JPY)
Debt Instrument [Line Items]
Long-term debt, gross		54,273									14,304
Weighted-average interest rate			0.92%									1.15%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | Singapore dollar (SGD)
Debt Instrument [Line Items]
Long-term debt, gross		11,186									49,132
Weighted-average interest rate			1.52%									1.92%
Digital Realty Trust, L.P. | Global revolving credit facility | Floating Rate | Canadian dollar (CAD)
Debt Instrument [Line Items]
Long-term debt, gross		11,534									71,186
Weighted-average interest rate			1.92%									1.95%
Digital Realty Trust, L.P. | Unsecured term loan
Debt Instrument [Line Items]
Long-term debt, gross		1,488,498									924,568
Deferred financing costs, net		(6,137)									(1,301)
Total		1,482,361									923,267
Unamortized discounts		0
Total		1,488,498
Unamortized net premiums		0
Weighted-average interest rate			1.93%									1.76%
Derivative forward exchange rate (in dollars per share)				0.69	1.05	1.23			0.72				0.70	1.09	1.47			0.73
Digital Realty Trust, L.P. | Unsecured term loan | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate			2.23%									1.94%
Digital Realty Trust, L.P. | Unsecured term loan | U.S. dollar ($)
Debt Instrument [Line Items]
Long-term debt, gross		710,911									410,905
Weighted-average interest rate			1.99%									1.51%
Digital Realty Trust, L.P. | Unsecured term loan | U.S. dollar ($) | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate			2.45%									1.90%
Digital Realty Trust, L.P. | Unsecured term loan | British pound sterling (£)
Debt Instrument [Line Items]
Long-term debt, gross		209,132									178,195
Weighted-average interest rate			1.36%									1.78%
Derivative forward exchange rate (in dollars per share) | $ / £						1.23
Digital Realty Trust, L.P. | Unsecured term loan | British pound sterling (£) | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate			1.89%
Digital Realty Trust, L.P. | Unsecured term loan | Australian dollar (AUD)
Debt Instrument [Line Items]
Long-term debt, gross		170,325									75,337
Weighted-average interest rate			2.72%									3.27%
Digital Realty Trust, L.P. | Unsecured term loan | Japanese yen (JPY)
Debt Instrument [Line Items]
Long-term debt, gross		15,983									0
Weighted-average interest rate			0.98%									0.00%
Digital Realty Trust, L.P. | Unsecured term loan | Singapore dollar (SGD)
Debt Instrument [Line Items]
Long-term debt, gross		222,824									161,070
Weighted-average interest rate			1.76%									2.16%
Derivative forward exchange rate (in dollars per share) | $ / SGD				0.69									0.70
Digital Realty Trust, L.P. | Unsecured term loan | Singapore dollar (SGD) | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate			1.90%									2.19%
Digital Realty Trust, L.P. | Unsecured term loan | Canadian dollar (CAD)
Debt Instrument [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / CAD								0.74
Digital Realty Trust, L.P. | Unsecured term loan | Canadian dollar (CAD) | Interest Rate Swap
Debt Instrument [Line Items]
Weighted-average interest rate			1.88%
Digital Realty Trust, L.P. | Unsecured term loan | Unsecured term loan — 5-year
Debt Instrument [Line Items]
Long-term debt, gross		$ 1,188,498									924,568
Debt instrument term		5 years
Basis spread on variable rate		1.10%
Digital Realty Trust, L.P. | Unsecured term loan | Unsecured term loan — 7-year
Debt Instrument [Line Items]
Long-term debt, gross		$ 300,000									0
Debt instrument term		7 years
Basis spread on variable rate		1.55%
Digital Realty Trust, L.P. | Unsecured term loan | Floating Rate | Euro (€)
Debt Instrument [Line Items]
Long-term debt, gross		$ 0									99,061
Weighted-average interest rate			0.00%									1.00%
Digital Realty Trust, L.P. | Unsecured term loan | Floating Rate | Hong Kong dollar (HKD)
Debt Instrument [Line Items]
Long-term debt, gross		86,029									0
Weighted-average interest rate			1.77%									0.00%
Digital Realty Trust, L.P. | Unsecured term loan | Floating Rate | Canadian dollar (CAD)
Debt Instrument [Line Items]
Long-term debt, gross		73,294									0
Weighted-average interest rate			2.00%									0.00%
Digital Realty Trust, L.P. | Prudential Shelf Facility
Debt Instrument [Line Items]
Long-term debt, gross		50,000									75,000
Unamortized discounts		0
Total		50,000
Unamortized net premiums		0
Digital Realty Trust, L.P. | Prudential Shelf Facility | Series C
Debt Instrument [Line Items]
Long-term debt, gross		0									25,000
Stated interest rate			9.68%
Digital Realty Trust, L.P. | Prudential Shelf Facility | Series E
Debt Instrument [Line Items]
Long-term debt, gross		50,000									50,000
Stated interest rate			5.73%
Digital Realty Trust, L.P. | Senior notes
Debt Instrument [Line Items]
Long-term debt, gross		4,144,820
Deferred financing costs, net		(25,374)									(26,037)
Total		4,153,797									3,712,569
Unamortized discounts		(15,649)									(17,914)
Total		4,129,171									3,663,606
Unamortized net premiums		0
Digital Realty Trust, L.P. | Senior notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Long-term debt, gross		500,000									500,000
Deferred financing costs, net																								$ (4,400)
Stated interest rate			5.875%																					5.875%
Unamortized discounts																								$ (8,500)
Digital Realty Trust, L.P. | Senior notes | 3.400% notes due 2020
Debt Instrument [Line Items]
Long-term debt, gross		500,000									500,000
Stated interest rate			3.40%
Digital Realty Trust, L.P. | Senior notes | 5.250% notes due 2021
Debt Instrument [Line Items]
Long-term debt, gross		400,000									400,000
Deferred financing costs, net																							$ (3,600)
Stated interest rate			5.25%																				5.25%
Unamortized discounts																							$ (900)
Digital Realty Trust, L.P. | Senior notes | 3.950% notes due 2022
Debt Instrument [Line Items]
Long-term debt, gross		500,000									500,000
Stated interest rate			3.95%
Digital Realty Trust, L.P. | Senior notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Long-term debt, gross		300,000									300,000
Deferred financing costs, net																						$ (3,000)
Stated interest rate			3.625%																			3.625%
Unamortized discounts																						$ (3,900)
Digital Realty Trust, L.P. | Senior notes | 4.750% notes due 2023
Debt Instrument [Line Items]
Long-term debt, gross		370,200									442,080
Deferred financing costs, net																				$ (5,000)
Stated interest rate			4.75%																	4.75%
Unamortized discounts																				$ (3,000)
Digital Realty Trust, L.P. | Senior notes | 4.750% 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. | Senior notes | 2.625% notes due 2024
Debt Instrument [Line Items]
Long-term debt, gross		631,020									0
Stated interest rate			2.625%
Digital Realty Trust, L.P. | Senior notes | 4.250% notes due 2025
Debt Instrument [Line Items]
Long-term debt, gross		493,600									589,440
Deferred financing costs, net																					$ (5,800)
Stated interest rate			4.25%																		4.25%
Unamortized discounts																					$ (4,800)
Digital Realty Trust, L.P. | Senior notes | 4.750% notes due 2025
Debt Instrument [Line Items]
Long-term debt, gross		450,000									450,000
Stated interest rate			4.75%
Digital Realty Trust, L.P. | Mortgage loans
Debt Instrument [Line Items]
Long-term debt, gross		2,916
Deferred financing costs, net		(10)									(253)
Total		3,240									302,930
Unamortized discounts		0
Total		3,250									303,183
Unamortized net premiums		334									439
Derivative forward exchange rate (in dollars per share) | $ / £						1.23									1.47
Digital Realty Trust, L.P. | Mortgage loans | 2045 & 2055 LaFayette Street
Debt Instrument [Line Items]
Long-term debt, gross		0									61,437
Interest rate at period end			5.93%
Digital Realty Trust, L.P. | Mortgage loans | 34551 Ardenwood Boulevard 1-4
Debt Instrument [Line Items]
Long-term debt, gross		0									50,477
Interest rate at period end			5.95%
Digital Realty Trust, L.P. | Mortgage loans | 1100 Space Park Drive
Debt Instrument [Line Items]
Long-term debt, gross		0									50,423
Interest rate at period end			5.89%
Digital Realty Trust, L.P. | Mortgage loans | 600 West Seventh Street
Debt Instrument [Line Items]
Long-term debt, gross		0									46,000
Interest rate at period end			5.80%
Digital Realty Trust, L.P. | Mortgage loans | 150 South First Street
Debt Instrument [Line Items]
Long-term debt, gross		0									48,484
Interest rate at period end			6.30%
Digital Realty Trust, L.P. | Mortgage loans | 2334 Lundy Place
Debt Instrument [Line Items]
Long-term debt, gross		0									36,714
Interest rate at period end			5.96%
Digital Realty Trust, L.P. | Mortgage loans | 8025 North Interstate 35
Debt Instrument [Line Items]
Long-term debt, gross		0									5,789
Interest rate at period end			4.09%
Digital Realty Trust, L.P. | Mortgage loans | 731 East Trade Street
Debt Instrument [Line Items]
Long-term debt, gross		$ 2,916									$ 3,420
Interest rate at period end			8.22%

Debt of the Operating Partner65

Debt of the Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) - Digital Realty Trust, L.P.	12 Months Ended
	Dec. 31, 2016USD ($)extension	Jan. 15, 2016USD ($)	Dec. 31, 2015USD ($)	Aug. 15, 2013USD ($)
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,896,311,000
Global revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 2,000,000,000
Number of extension options | extension	2
Debt extension	6 months
Basis spread on variable rate	1.00%
Commitment fee percentage	0.20%
Financing costs capitalized amount	$ 10,900,000
Long-term debt, gross	210,077,000		$ 967,884,000
Letters of credit	$ 20,000,000
Global revolving credit facility | Accordian Feature
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 2,500,000,000

Debt of the Operating Partner66

Debt of the Operating Partnership (Unsecured Term Loan) (Narrative) (Details) - Digital Realty Trust, L.P. - USD ($)	Jan. 15, 2016	Dec. 31, 2016	Apr. 16, 2012
Debt Instrument [Line Items]
Long-term debt, gross		$ 5,896,311,000
Unsecured term loan — 5-year
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,250,000,000
Basis spread on variable rate		1.10%
Debt instrument term	5 years
Unsecured term loan — 7-year
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 300,000,000
Basis spread on variable rate		1.55%
Debt instrument term	7 years
Unsecured term loan
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,550,000,000		$ 1,000,000,000
Capitalized financing costs		$ 6,100,000
Maximum borrowing capacity, subject to receipt of lender commitments and other conditions	$ 1,800,000,000
Long-term debt, gross		$ 1,500,000,000

Debt of the Operating Partner67

Debt of the Operating Partnership (Unsecured Senior Notes) (Narrative) (Details) - Digital Realty Trust, L.P.

Jan. 20, 2010USD ($)series

Dec. 31, 2016USD ($)

Jan. 20, 2017USD ($)

Jan. 06, 2016USD ($)

Dec. 31, 2015USD ($)

Feb. 03, 2015USD ($)

Jan. 20, 2015USD ($)

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]

Balance outstanding

$ 5,896,311,000

Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 50,000,000

Number of series notes were issued in | series

2

Balance outstanding

50,000,000

$ 75,000,000

Unsecured senior notes

Debt of the Operating Partnership [Line Items]

Balance outstanding

$ 4,144,820,000

Prudential Shelf Facility | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 100,000,000

$ 250,000,000

$ 200,000,000

Unissued amount

$ 50,000,000

Series D | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

50,000,000

Interest rate

4.57%

Debt instrument term

5 years

Repaid amount

$ 50,000,000

Series E | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 50,000,000

Interest rate

5.73%

Debt instrument term

7 years

Series F | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 17,000,000

Interest rate

4.50%

Debt instrument term

5 years

Repaid amount

$ 17,000,000

Series A | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 25,000,000

Interest rate

7.00%

Repaid amount

$ 25,000,000

Series B | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 33,000,000

Interest rate

9.32%

Repaid amount

$ 33,000,000

Series C | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Debt face amount

$ 25,000,000

Interest rate

9.68%

Repaid amount

$ 25,000,000

Subsequent Event | Series E | Unsecured Debt

Debt of the Operating Partnership [Line Items]

Interest rate

5.73%

Repaid amount

$ 50,000,000

Debt of the Operating Partner68

Debt of the Operating Partnership (5.875% Notes Due 2020) (Narrative) (Details)	Jan. 28, 2010USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 766,201,000	$ 0	$ 0
Unsecured senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		$ 25,400,000	26,000,000
Unsecured senior notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Interest rate		5.875%
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		$ 15,649,000
Borrowings of unsecured senior notes		766,201,000	0	$ 0
Digital Realty Trust, L.P. | Unsecured senior notes
Debt Instrument [Line Items]
Unamortized discount		15,649,000	17,914,000
Deferred financing costs, net		$ 25,374,000	$ 26,037,000
Digital Realty Trust, L.P. | Unsecured senior notes | 5.875% notes due 2020
Debt Instrument [Line Items]
Debt face amount	$ 500,000,000
Interest rate	5.875%	5.875%
Purchase price paid, percentage of face amount	98.296%
Unamortized discount	$ 8,500,000
Deferred financing costs, net	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		150.00%

Debt of the Operating Partner69

Debt of the Operating Partnership (5.250% Notes Due 2021) (Narrative) (Details)	Mar. 08, 2011USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 766,201,000	$ 0	$ 0
Unsecured senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		$ 25,400,000	26,000,000
Unsecured senior notes | 5.250% notes due 2021
Debt Instrument [Line Items]
Interest rate		5.25%
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		$ 15,649,000
Borrowings of unsecured senior notes		766,201,000	0	$ 0
Digital Realty Trust, L.P. | Unsecured senior notes
Debt Instrument [Line Items]
Unamortized discount		15,649,000	17,914,000
Deferred financing costs, net		$ 25,374,000	$ 26,037,000
Digital Realty Trust, L.P. | Unsecured senior notes | 5.250% notes due 2021
Debt Instrument [Line Items]
Debt face amount	$ 400,000,000
Interest rate	5.25%	5.25%
Purchase price paid, percentage of face amount	99.775%
Unamortized discount	$ 900,000
Deferred financing costs, net	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		150.00%

Debt of the Operating Partner70

Debt of the Operating Partnership (3.625% Notes Due 2022) (Narrative) (Details)	Sep. 24, 2012USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 766,201,000	$ 0	$ 0
Unsecured senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		$ 25,400,000	26,000,000
Unsecured senior notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Interest rate		3.625%
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		$ 15,649,000
Borrowings of unsecured senior notes		766,201,000	0	$ 0
Digital Realty Trust, L.P. | Unsecured senior notes
Debt Instrument [Line Items]
Unamortized discount		15,649,000	17,914,000
Deferred financing costs, net		$ 25,374,000	$ 26,037,000
Digital Realty Trust, L.P. | Unsecured senior notes | 3.625% notes due 2022
Debt Instrument [Line Items]
Debt face amount	$ 300,000,000
Interest rate	3.625%	3.625%
Purchase price paid, percentage of face amount	98.684%
Unamortized discount	$ 3,900,000
Deferred financing costs, net	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		150.00%

Debt of the Operating Partner71

Debt of the Operating Partnership (4.750% Notes Due 2023) (Narrative) (Details) $ in Thousands	Apr. 01, 2014USD ($)$ / £	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Apr. 01, 2014GBP (£)$ / £
Unsecured senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		$ 25,400	$ 26,000
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		15,649
Digital Realty Trust, L.P. | Unsecured senior notes
Debt Instrument [Line Items]
Unamortized discount		15,649	17,914
Deferred financing costs, net		$ 25,374	$ 26,037
Digital Realty Trust, L.P. | 4.750% notes due 2023 | Unsecured senior notes
Debt Instrument [Line Items]
Debt face amount	$ 498,900			£ 300,000,000
Interest rate	4.75%	4.75%		4.75%
Unamortized discount	$ 3,000
Deferred financing costs, net	5,000
Proceeds form debt, net of issuance costs	$ 490,900
Secured debt ratio percentage		40.00%
Interest coverage ratio		1.50
Unencumbered assets to unsecured debt		150.00%
Digital Realty Trust, L.P. | 4.750% notes due 2023 | British pound sterling (£) | Unsecured senior notes
Debt Instrument [Line Items]
Derivative forward exchange rate (in dollars per share) | $ / £	1.66			1.66
Digital Realty Trust, L.P. | 4.750% notes due 2023 | Maximum | Unsecured senior notes
Debt Instrument [Line Items]
Leverage ratio		60.00%

Debt of the Operating Partner72

Debt of the Operating Partnership (4.25% Notes Due 2025) (Narrative) (Details) $ in Thousands	Jan. 18, 2013USD ($)$ / £	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Jan. 18, 2013GBP (£)$ / £
Debt Instrument [Line Items]
Borrowings of unsecured senior notes		$ 766,201	$ 0	$ 0
Unsecured senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		$ 25,400	26,000
4.250% notes due 2025 | Unsecured senior notes
Debt Instrument [Line Items]
Interest rate		4.25%
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		$ 15,649
Borrowings of unsecured senior notes		766,201	0	$ 0
Digital Realty Trust, L.P. | Unsecured senior notes
Debt Instrument [Line Items]
Unamortized discount		15,649	17,914
Deferred financing costs, net		$ 25,374	$ 26,037
Digital Realty Trust, L.P. | 4.250% notes due 2025 | Unsecured senior notes
Debt Instrument [Line Items]
Debt face amount	$ 634,800				£ 400,000,000
Interest rate	4.25%	4.25%			4.25%
Unamortized discount	$ 4,800
Deferred financing costs, net	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		150.00%
Digital Realty Trust, L.P. | 4.250% notes due 2025 | British pound sterling (£) | Unsecured senior notes
Debt Instrument [Line Items]
Exchange rate (in usd per gbp) | $ / £	1.59				1.59

Debt of the Operating Partner73

Debt of the Operating Partnership (3.950% Notes Due 2022) (Narrative) (Details)	Jun. 23, 2015USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Unsecured senior notes
Debt Instrument [Line Items]
Deferred financing costs, net		$ 25,400,000	$ 26,000,000
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Unamortized discount		$ 15,649,000
Digital Realty Trust, L.P. | 3.950% Notes Due 2022
Debt Instrument [Line Items]
Unencumbered assets to unsecured debt		150.00%
Digital Realty Trust, L.P. | Unsecured senior notes
Debt Instrument [Line Items]
Unamortized discount		$ 15,649,000	17,914,000
Deferred financing costs, net		$ 25,374,000	$ 26,037,000
Digital Realty Trust, L.P. | Unsecured senior notes | 3.950% Notes Due 2022
Debt Instrument [Line Items]
Debt face amount	$ 500,000,000
Interest rate	3.95%
Issuance as a percentage of par	99.236%
Unamortized discount	$ 3,800,000
Deferred financing costs, net	4,400,000
Proceeds form debt, net of issuance costs	$ 491,800,000
Leverage ratio percentage		60.00%
Covenant, secured leverage ration allowable maximum		40.00%
Covenant, interest coverage ratio required minimum		1.50

Debt of the Operating Partner74

Debt of the Operating Partnership (3.400% Notes Due 2020 and 4.750% Notes Due 2025) (Narrative) (Details)	Oct. 01, 2015USD ($)	Dec. 31, 2016
Unsecured senior notes | 3.400% Notes Due 2020
Debt Instrument [Line Items]
Redemption price percentage		100.00%
Unsecured senior notes | 4.750% Notes Due 2025
Debt Instrument [Line Items]
Redemption price percentage		100.00%
Digital Realty Trust, L.P.
Debt Instrument [Line Items]
Number of business days following consummation of acquisition by wholly owned subsidiary to merge with parent company	5 days
Digital Realty Trust, L.P. | 3.400% Notes Due 2020
Debt Instrument [Line Items]
Unencumbered assets to unsecured debt		150.00%
Digital Realty Trust, L.P. | 4.750% Notes Due 2025
Debt Instrument [Line Items]
Unencumbered assets to unsecured debt		150.00%
Digital Realty Trust, L.P. | Unsecured senior notes | 3.400% Notes Due 2020
Debt Instrument [Line Items]
Debt face amount	$ 500,000,000
Interest rate	3.40%
Issuance as a percentage of par	99.777%
Leverage ratio percentage		60.00%
Covenant, secured leverage ration allowable maximum		40.00%
Covenant, interest coverage ratio required minimum		1.50
Digital Realty Trust, L.P. | Unsecured senior notes | 4.750% Notes Due 2025
Debt Instrument [Line Items]
Debt face amount	$ 450,000,000
Interest rate	4.75%
Issuance as a percentage of par	100.00%
Leverage ratio percentage		60.00%
Covenant, secured leverage ration allowable maximum		40.00%
Covenant, interest coverage ratio required minimum		1.50

Debt of the Operating Partner75

Debt of the Operating Partnership (2.625% Notes due 2024) (Narrative) (Details) - Digital Realty Trust, L.P. - 2.625% Notes Due 2024 $ in Millions	Apr. 15, 2016USD ($)	Apr. 15, 2016EUR (€)	Dec. 31, 2016
Debt Instrument [Line Items]
Unencumbered assets to unsecured debt			150.00%
Unsecured senior notes
Debt Instrument [Line Items]
Debt face amount		€ 600,000,000
Interest rate		2.625%
Proceeds form debt, net of issuance costs	$ 670.3	€ 594,000,000
Leverage ratio percentage			60.00%
Covenant, secured leverage ration allowable maximum			40.00%
Covenant, interest coverage ratio required minimum			1.50

Debt of the Operating Partner76

Debt of the Operating Partnership (Schedule of Debt Maturities and Principal Maturities) (Details) - Digital Realty Trust, L.P. $ in Thousands	Jan. 20, 2017USD ($)	Dec. 31, 2016USD ($)extension	Dec. 31, 2015USD ($)
Debt Instrument [Line Items]
2,017		$ 50,546
2,018		593
2,019		644
2,020		1,211,210
2,021		1,588,498
Thereafter		3,044,820
Subtotal		5,896,311
Unamortized discount		(15,649)
Unamortized premium		334
Total		5,880,996
Global revolving credit facility
Debt Instrument [Line Items]
2,017		0
2,018		0
2,019		0
2,020		210,077
2,021		0
Thereafter		0
Subtotal		210,077	$ 967,884
Unamortized discount		0
Unamortized premium		0
Total		$ 210,077
Number of extension options | extension		2
Revolving credit facility commitments extension		6 months
Unsecured term loan
Debt Instrument [Line Items]
2,017		$ 0
2,018		0
2,019		0
2,020		0
2,021		1,188,498
Thereafter		300,000
Subtotal		1,488,498	924,568
Unamortized discount		0
Unamortized premium		0
Total		1,488,498
Prudential Shelf Facility
Debt Instrument [Line Items]
2,017		50,000
2,018		0
2,019		0
2,020		0
2,021		0
Thereafter		0
Subtotal		50,000	75,000
Unamortized discount		0
Unamortized premium		0
Total		50,000
Senior notes
Debt Instrument [Line Items]
2,017		0
2,018		0
2,019		0
2,020		1,000,000
2,021		400,000
Thereafter		2,744,820
Subtotal		4,144,820
Unamortized discount		(15,649)	(17,914)
Unamortized premium		0
Total		4,129,171	3,663,606
Mortgage loans
Debt Instrument [Line Items]
2,017		546
2,018		593
2,019		644
2,020		1,133
2,021		0
Thereafter		0
Subtotal		2,916
Unamortized discount		0
Unamortized premium		334	439
Total		3,250	303,183
Series C | Prudential Shelf Facility
Debt Instrument [Line Items]
Subtotal		$ 0	$ 25,000
Interest rate		9.68%
Subsequent Event | Series C | Prudential Shelf Facility
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 50,000
Interest rate	5.73%

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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 77,682	$ 187,330	$ 27,951	$ 39,125	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ 332,088	$ 217,266	$ 132,718
Weighted average units outstanding—basic (in shares)									149,953,662	138,247,606	133,369,047
Potentially dilutive common shares:
Stock options (in shares)									9,726	20,424	30,434
Unvested incentive units (in shares)									71,031	95,746	90,449
Forward equity offering (in shares)									3,990	0	0
Market performance-based awards (in shares)									641,279	501,645	147,305
Weighted average units outstanding—diluted (in shares)									150,679,688	138,865,421	133,637,235
Income per share:
Basic (in dollars per share)	$ 0.49	$ 1.27	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.21	$ 1.57	$ 1
Diluted (in dollars per share)	$ 0.49	$ 1.25	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.20	$ 1.56	$ 0.99

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, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	16,421,253	20,118,783	21,429,247
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)	2,406,018	2,658,291	2,753,614
Potentially dilutive 2029 Debentures
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	0	1,957,963
Potentially dilutive Series E Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,880,254	4,301,438	4,956,175
Potentially dilutive Series F Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,939,905	2,727,962	3,143,195
Potentially dilutive Series G Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,652,503	3,730,042	4,297,805
Potentially dilutive Series H Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	3,886,966	5,465,987	4,320,495
Potentially dilutive Series I Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,655,607	1,235,063	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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Net income available to common unitholders	$ 77,682	$ 187,330	$ 27,951	$ 39,125	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ 332,088	$ 217,266	$ 132,718
Weighted average units outstanding—basic (in shares)									149,953,662	138,247,606	133,369,047
Potentially dilutive common units:
Stock options (in shares)									9,726	20,424	30,434
Unvested incentive units (in shares)									71,031	95,746	90,449
Forward equity offering (in units)									3,990	0	0
Market performance-based awards (in shares)									641,279	501,645	147,305
Weighted average units outstanding—diluted (in shares)									150,679,688	138,865,421	133,637,235
Income per unit:
Basic (in dollars per share)	$ 0.49	$ 1.27	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.21	$ 1.57	$ 1
Diluted (in dollars per share)	$ 0.49	$ 1.25	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.20	$ 1.56	$ 0.99
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Net income available to common unitholders	$ 78,836	$ 190,354	$ 28,408	$ 39,788	$ (40,959)	$ 38,116	$ 119,432	$ 103,754	$ 337,386	$ 220,343	$ 135,485
Weighted average units outstanding—basic (in shares)									152,359,680	140,905,897	136,122,661
Potentially dilutive common units:
Stock options (in shares)									9,726	20,424	30,434
Unvested incentive units (in shares)									71,031	95,746	90,449
Forward equity offering (in units)									3,990	0	0
Market performance-based awards (in shares)									641,279	501,645	147,305
Weighted average units outstanding—diluted (in shares)									153,085,706	141,523,712	136,390,849
Income per unit:
Basic (in dollars per share)	$ 0.49	$ 1.27	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.21	$ 1.56	$ 1
Diluted (in dollars per share)	$ 0.49	$ 1.25	$ 0.19	$ 0.27	$ (0.28)	$ 0.27	$ 0.86	$ 0.75	$ 2.20	$ 1.55	$ 0.99

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, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	16,421,253	20,118,783	21,429,247
Potentially dilutive 2029 Debentures
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	0	1,957,963
Potentially dilutive Series E Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,880,254	4,301,438	4,956,175
Potentially dilutive Series F Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,939,905	2,727,962	3,143,195
Potentially dilutive Series G Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,652,503	3,730,042	4,297,805
Potentially dilutive Series H Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	3,886,966	5,465,987	4,320,495
Potentially dilutive Series I Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,655,607	1,235,063	0
Digital Realty Trust, L.P.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	14,015,235	17,460,492	18,675,633
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	0	1,957,963
Digital Realty Trust, L.P. | Potentially dilutive Series E Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,880,254	4,301,438	4,956,175
Digital Realty Trust, L.P. | Potentially dilutive Series F Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	1,939,905	2,727,962	3,143,195
Digital Realty Trust, L.P. | Potentially dilutive Series G Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,652,503	3,730,042	4,297,805
Digital Realty Trust, L.P. | Potentially dilutive Series H Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	3,886,966	5,465,987	4,320,495
Digital Realty Trust, L.P. | Potentially dilutive Series I Cumulative Redeemable Preferred Stock and Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	2,655,607	1,235,063	0

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Percentage of taxable income distributed to the partnership (at least)	100.00%
Net deferred tax liability	$ 153,819	$ 131,196
Gross deferred income tax assets:
Net operating loss carryforwards	98,054	123,091
Basis difference - real estate property	156,394	103,789
Basis difference - intangibles	2,225	2,002
Other - temporary differences	31,503	9,406
Total gross deferred income tax assets	288,176	238,288
Valuation allowance	(45,628)	(35,266)
Total deferred income tax assets, net of valuation allowance	242,548	203,022
Gross deferred income tax liabilities:
Basis difference - real estate property	289,867	273,155
Basis difference - intangibles	64,714	14,374
Straight-line rent	5,172	14,269
Other - temporary differences	36,614	32,420
Total gross deferred income tax liabilities	396,367	334,218
Net deferred income tax liabilities	153,819	131,196
Income Tax Expense (Benefit)	$ 10,385	$ 6,451	$ 5,238

Equity and Accumulated Other 82

Equity and Accumulated Other Comprehensive Loss, Net (Equity Distribution Agreements Narrative) (Details) - 2011 Equity Distribution Agreements - USD ($) $ / shares in Units, shares in Millions	66 Months Ended
	Dec. 31, 2016	Jun. 29, 2011
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 (in shares)	5.7
Equity distribution agreements at an average price per share (in dollars 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 83

Equity and Accumulated Other Comprehensive Loss, Net (Forward Equity Sale) (Details) - USD ($) $ in Thousands	Sep. 27, 2016	Jun. 02, 2016	May 20, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Common stock, shares issued (in shares)				159,019,118	146,384,247
Gross proceeds from the issuance of common stock				$ 1,089,154	$ 675,577	$ 0
Common Stock
Class of Stock [Line Items]
New issues of stock during period (in shares/units)				12,000,000	10,500,000	6,869,912
Forward Equity Sale
Class of Stock [Line Items]
Common stock subject to forward sale agreements (shares)				2,375,000
Forward Equity Sale | Common Stock
Class of Stock [Line Items]
New issues of stock during period (in shares/units)		14,375,000	12,500,000
New Issues of stock during period, underwriters option (shares)		1,875,000
Common stock, shares issued (in shares)	12,000,000
Gross proceeds from the issuance of common stock	$ 1,100,000

Equity and Accumulated Other 84

Equity and Accumulated Other Comprehensive Loss, Net (Redemption of Series E Preferred Stock Narrative) (Details) - Series E Preferred Stock and Unit - USD ($) $ / shares in Units, $ in Millions	Sep. 15, 2016	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	11,500,000	0	11,500,000
Preferred stock, dividend rate	7.00%	7.00%	7.00%
Preferred stock, redemption price per share (in dollars per share)	$ 25.35972
Preferred stock, liquidation preference per share/unit (in dollars per share)	$ 25	$ 25	$ 25
Redemption premium	$ 10.3	$ 10.3

Equity and Accumulated Other 85

Equity and Accumulated Other Comprehensive Loss, Net (6.625% Series F Cumulative Redeemable Preferred Stock Narrative) (Details) - Series F Preferred Stock and Unit $ / shares in Units, $ in Millions	Jun. 29, 2012$ / shares	Apr. 18, 2012USD ($)$ / sharesshares	Dec. 31, 2016quarter$ / sharesshares	Dec. 31, 2015$ / sharesshares
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares		7,300,000	7,300,000	7,300,000
Preferred stock, dividend rate		6.625%	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	$ 1.65625
Preferred stock, liquidation preference per share/unit (in dollars per share)		$ 25	25	$ 25
Preferred stock, dividends in arrears per share (in dollars 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 (in shares) | shares			0.6843

Equity and Accumulated Other 86

Equity and Accumulated Other Comprehensive Loss, Net (5.875% Series G Cumulative Redeemable Preferred Stock Narrative) (Details) - Series G Preferred Stock and Unit $ / shares in Units, $ in Millions	Jun. 28, 2013$ / shares	Apr. 09, 2013USD ($)$ / sharesshares	Dec. 31, 2016quarter$ / sharesshares	Dec. 31, 2015$ / 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	$ 1.46875
Preferred stock, liquidation preference per share/unit (in dollars per share)		$ 25	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 (in shares) | shares			0.7532

Equity and Accumulated Other 87

Equity and Accumulated Other Comprehensive Loss, Net (7.375% Series H Cumulative Redeemable Preferred Stock Narrative) (Details) - Series H Preferred Stock and Unit $ / shares in Units, $ in Millions	Jun. 30, 2014$ / shares	Apr. 07, 2014USD ($)shares	Mar. 26, 2014USD ($)$ / sharesshares	Dec. 31, 2016quarter$ / sharesshares	Dec. 31, 2015$ / sharesshares	Apr. 08, 2016shares
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares		2,000,000	12,000,000	14,600,000	14,600,000	14,600,000
Preferred stock, dividend rate			7.375%	7.375%	7.375%
Gross proceeds from issuance of redeemable preferred stock | $		$ 353.3	$ 289.3
Annual rate of dividend per share (in dollars per share)			$ 1.84375	$ 1.84375
Preferred stock, liquidation preference per share/unit (in dollars per share)			$ 25	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 (in shares) | shares				0.9632
Over Allotment Option
Class of Stock [Line Items]
Preferred stock, shares issued (in shares) | shares		600,000

Equity and Accumulated Other 88

Equity and Accumulated Other Comprehensive Loss, Net (6.350% Series I Cumulative Redeemable Preferred Stock Narrative) (Details) $ / shares in Units, $ in Thousands	Dec. 31, 2015$ / shares	Aug. 24, 2015USD ($)$ / sharesshares	Dec. 31, 2016USD ($)quarter$ / sharesshares	Dec. 31, 2015USD ($)$ / shares	Dec. 31, 2014USD ($)
Class of Stock [Line Items]
Gross proceeds from the issuance of preferred stock | $			$ 0	$ 250,000	$ 365,000
Series I Preferred Stock and Unit
Class of Stock [Line Items]
New issues of stock during period (in shares/units) | shares		10,000,000
Preferred stock, dividend rate		6.35%	6.35%	6.35%
Gross proceeds from the issuance of preferred stock | $		$ 242,000
Preferred stock dividends per share declared (in dollars per share)	$ 0.56003	$ 1.5875
Preferred stock, liquidation preference per share/unit (in dollars per share)	$ 25	$ 25	$ 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 (in shares) | shares			0.76231

Equity and Accumulated Other 89

Equity and Accumulated Other Comprehensive Loss, Net (Noncontrolling Interests in Operating Partnership) (Details) $ in Millions	Dec. 31, 2016USD ($)shares	Dec. 31, 2015USD ($)shares
Class of Stock [Line Items]
Partners' capital account units (in units)	159,019,118	146,384,247
Percentage of total	98.50%	98.10%
Common stock conversion ratio	1
Redemption value of OP units | $	$ 226.3	$ 192.7
Common units held by third parties
Class of Stock [Line Items]
Common units held by third parties (in units)	1,141,814	1,421,314
Percentage of total	0.70%	1.00%
Incentive units held by employees and directors (see note 13)
Class of Stock [Line Items]
Incentive units held by employees and directors (in units)	1,333,849	1,412,012
Percentage of total	0.80%	0.90%
Noncontrolling Interests in Operating Partnership
Class of Stock [Line Items]
Partners' capital account units (in units)	161,494,781	149,217,573
Percentage of total	100.00%	100.00%

Equity and Accumulated Other 90

Equity and Accumulated Other Comprehensive Loss, Net (Summary of Activity for Noncontrolling Interests in the Operating Partnership) (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Noncontrolling Interest, Shares [Roll Forward]
Balance as of Beginning of Period (in shares)	2,833,326	3,013,661	2,967,021
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (in shares)	(279,500)	(42,500)	(28,000)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (in shares)	(150,993)	(113,508)	(106,073)
Vesting of Class C Units (2007 Grant) (in shares)			(18,773)
Cancellation of incentive units held by employees and directors (in shares)	(1,416)	(151,579)
Grant of incentive units to employees and directors (in shares)	74,246	127,252	199,486
Balance as of End of Period (in shares)	2,475,663	2,833,326	3,013,661
Common Units
Noncontrolling Interest, Shares [Roll Forward]
Balance as of Beginning of Period (in shares)	1,421,314	1,463,814	1,491,814
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (in shares)	(279,500)	(42,500)	(28,000)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (in shares)	0	0	0
Vesting of Class C Units (2007 Grant) (in shares)			0
Cancellation of incentive units held by employees and directors (in shares)		0
Grant of incentive units to employees and directors (in shares)	0		0
Balance as of End of Period (in shares)	1,141,814	1,421,314	1,463,814
Incentive Units
Noncontrolling Interest, Shares [Roll Forward]
Balance as of Beginning of Period (in shares)	1,412,012	1,549,847	1,475,207
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (in shares)	0	0	0
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (in shares)	(150,993)	(113,508)	(106,073)
Vesting of Class C Units (2007 Grant) (in shares)			(18,773)
Cancellation of incentive units held by employees and directors (in shares)	(1,416)	(151,579)
Grant of incentive units to employees and directors (in shares)	74,246	127,252	199,486
Balance as of End of Period (in shares)	1,333,849	1,412,012	1,549,847

Equity and Accumulated Other 91

Equity and Accumulated Other Comprehensive Loss, Net (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands	Sep. 15, 2016	Mar. 26, 2014	Jun. 28, 2013	Apr. 09, 2013	Apr. 18, 2012	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Aug. 24, 2015
Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 10,062	$ 20,124	$ 20,124
Annual rate of dividend per share (in dollars per share)						$ 1.75
Preferred stock, redemption price per share (in dollars per share)	$ 25.35972
Preferred stock, liquidation preference per share/unit (in dollars per share)	$ 25					$ 25	$ 25
Accrued and unpaid dividends up to but not including the redemption date	$ 4,100
Redemption premium	$ 10,300					$ 10,300
Series E Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 5,031
Series E Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Series E Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Series E Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,031
Series E Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Series E Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						5,031
Series E Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
Series E Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						0
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	$ 1.65625
Shares issued upon conversion (in shares)						0.6843
Preferred stock, redemption price per share (in dollars per share)						$ 25
Preferred stock, liquidation preference per share/unit (in dollars per share)					$ 25	$ 25	$ 25
Series F Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 3,023
Series F Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Series F Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Series F Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,023
Series F Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 3,023
Series F Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Series F Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,023
Series F Preferred Stock and Unit | November 9, 2016
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	14,688
Annual rate of dividend per share (in dollars per share)			$ 0.334550	$ 1.46875		$ 1.46875
Shares issued upon conversion (in shares)						0.7532
Preferred stock, redemption price per share (in dollars per share)						$ 25
Preferred stock, liquidation preference per share/unit (in dollars per share)				$ 25		$ 25	$ 25
Series G Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 3,672
Series G Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Series G Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Series G Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							3,672
Series G Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 3,672
Series G Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Series G Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,672
Series G Preferred Stock and Unit | November 9, 2016
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	$ 26,920	20,564
Annual rate of dividend per share (in dollars per share)		$ 1.84375				$ 1.84375
Shares issued upon conversion (in shares)						0.9632
Preferred stock, redemption price per share (in dollars per share)						$ 25
Preferred stock, liquidation preference per share/unit (in dollars per share)		$ 25				$ 25	$ 25
Series H Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series H Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								7,104
Series H Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 6,730
Series H Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Series H Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Series H Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							6,730
Series H Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 6,730
Series H Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Series H Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						6,730
Series H Preferred Stock and Unit | November 9, 2016
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						$ 15,876	$ 5,600	0
Annual rate of dividend per share (in dollars per share)						$ 1.588
Shares issued upon conversion (in shares)						0.76231
Preferred stock, redemption price per share (in dollars per share)						$ 25
Preferred stock, liquidation preference per share/unit (in dollars per share)						$ 25	$ 25		$ 25
Series I Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series I Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							$ 0
Series I Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series I Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							0
Series I Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units							5,600
Series I Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						$ 3,969
Series I Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,969
Series I Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,969
Series I Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units						3,969
Common Stock
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						536,733	470,748	$ 444,103
Common stock dividend per share amount (in dollars per share)								$ 3.320
Common Stock | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 106,743
Common Stock | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								112,357
Common Stock | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								112,465
Common Stock | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 112,538
Common Stock | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							115,419
Common Stock | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							115,458
Common Stock | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							115,454
Common Stock | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units							$ 124,417
Common stock dividend per share amount (in dollars per share)							$ 3.400
Common Stock | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						131,587
Common Stock | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						131,607
Common Stock | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						131,657
Common Stock | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units						$ 141,882
Common stock dividend per share amount (in dollars per share)						$ 3.52

Equity and Accumulated Other 92

Equity and Accumulated Other Comprehensive Loss, Net (Schedule of Accumulated Other Comprehensive Income (Loss), Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	$ 4,536,502	$ 3,914,238
Balance at End of Period	5,132,297	4,536,502
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	(90,342)	(39,567)
Net current period change	(85,300)	(50,775)
Reclassification to interest expense from interest rate swaps	0	0
Balance at End of Period	(175,642)	(90,342)
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	(6,248)	(5,479)
Net current period change	41,395	(3,338)
Reclassification to interest expense from interest rate swaps	4,890	2,569
Balance at End of Period	40,037	(6,248)
Accumulated Other Comprehensive Income (Loss), net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at Beginning of Period	(96,590)	(45,046)
Net current period change	(43,905)	(54,113)
Reclassification to interest expense from interest rate swaps	4,890	2,569
Balance at End of Period	$ (135,605)	$ (96,590)

Capital and Accumulated Other93

Capital and Accumulated Other Comprehensive Income (Loss) (6.625% Series F Cumulative Redeemable Preferred Units Narrative) (Details) - Series F Preferred Stock and Unit - $ / shares	Jun. 29, 2012	Apr. 18, 2012	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, dividend rate		6.625%	6.625%	6.625%
Annual rate of dividend per share (in dollars per unit)		$ 1.65625	$ 1.65625
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25	25	$ 25
Preferred stock, dividends in arrears per share (in dollars per unit)	$ 0.395660
Preferred stock, redemption price per share (in dollars per unit)			$ 25
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in units)		7,300,000	7,300,000	7,300,000
Preferred stock, dividend rate		6.625%	6.625%	6.625%
Annual rate of dividend per share (in dollars per unit)		$ 1.65625	$ 1.656
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25	25	$ 25
Preferred stock, dividends in arrears per share (in dollars per unit)	$ 0.39566
Preferred stock, redemption price per share (in dollars per unit)			$ 25

Capital and Accumulated Other94

Capital and Accumulated Other Comprehensive Income (Loss) (5.875% Series G Cumulative Redeemable Preferred Units Narrative) (Details) - Series G Preferred Stock and Unit - $ / shares	Jun. 28, 2013	Apr. 09, 2013	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, dividend rate		5.875%	5.875%	5.875%
Annual rate of dividend per share (in dollars per unit)	$ 0.334550	$ 1.46875	$ 1.46875
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25	25	$ 25
Preferred stock, redemption price per share (in dollars per unit)			$ 25
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in units)		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 unit)		$ 1.46875	$ 1.469
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25	25	$ 25
Preferred stock, dividends in arrears per share (in dollars per unit)	$ 0.334550
Preferred stock, redemption price per share (in dollars per unit)			$ 25

Capital and Accumulated Other95

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	Apr. 07, 2014	Mar. 26, 2014	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, dividend rate			7.375%	7.375%	7.375%
Annual rate of dividend per share (in dollars per unit)			$ 1.84375	$ 1.84375
Preferred Stock, liquidation preference per share/unit (in dollars per unit)			$ 25	25	$ 25
Preferred stock dividends per share declared (in dollars per share)	$ 0.48655
Preferred stock, redemption price per share (in dollars per unit)				$ 25
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in units)		14,600,000		14,600,000	14,600,000
Preferred stock, dividend rate		7.375%		7.375%	7.375%
Annual rate of dividend per share (in dollars per unit)		$ 1.84375		$ 1.844
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25		25	$ 25
Preferred stock dividends per share declared (in dollars per share)	$ 0.48655
Preferred stock, redemption price per share (in dollars per unit)				$ 25

Capital and Accumulated Other96

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	Jun. 30, 2014	Apr. 07, 2014	Mar. 26, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 13, 2015
Class of Stock [Line Items]
Gross proceeds from the issuance of preferred stock							$ 0	$ 250,000	$ 365,000
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Intercompany loans, stated interest rate			4.50%
Intercompany loans, extinguishment of debt		$ 244,100
Series H Preferred Stock and Unit
Class of Stock [Line Items]
Annual rate of dividend per share (in dollars per unit)						$ 1.84375	$ 1.84375
Preferred stock, dividend rate						7.375%	7.375%	7.375%
Preferred Stock, liquidation preference per share/unit (in dollars per unit)	$ 25					$ 25	$ 25	$ 25
Preferred stock dividends per share declared (in dollars per share)				$ 0.48655
Preferred stock, redemption price per share (in dollars per unit)							$ 25
Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Class of Stock [Line Items]
Preferred units, issued (in units)	14,600,000				14,600,000		14,600,000	14,600,000
Annual rate of dividend per share (in dollars per unit)					$ 1.84375		$ 1.844
Preferred stock, dividend rate					7.375%		7.375%	7.375%
Preferred Stock, liquidation preference per share/unit (in dollars per unit)	$ 25				$ 25		$ 25	$ 25
Preferred stock dividends per share declared (in dollars per share)				$ 0.48655
Preferred stock, redemption price per share (in dollars per unit)							25
Series I Preferred Stock and Unit
Class of Stock [Line Items]
New issues of stock during period (in shares/units)			10,000,000
Gross proceeds from the issuance of preferred stock			$ 242,000
Annual rate of dividend per share (in dollars per unit)							$ 1.588
Preferred stock, dividend rate			6.35%				6.35%	6.35%
Preferred Stock, liquidation preference per share/unit (in dollars per unit)	25		$ 25				$ 25	$ 25
Preferred stock dividends per share declared (in dollars per share)	$ 0.56003		$ 1.5875
Preferred stock, redemption price per share (in dollars per unit)							$ 25
Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Class of Stock [Line Items]
New issues of stock during period (in shares/units)			10,000,000
Gross proceeds from the issuance of preferred stock			$ 242,000
Intercompany loans, amount borrowed			$ 242,700
Preferred units, issued (in units)	10,000,000						10,000,000	10,000,000		10,000,000
Annual rate of dividend per share (in dollars per unit)			$ 1.5875				$ 1.588
Preferred stock, dividend rate			6.35%				6.35%	6.35%
Preferred Stock, liquidation preference per share/unit (in dollars per unit)	$ 25		$ 25				$ 25	$ 25
Preferred stock dividends per share declared (in dollars per share)	$ 0.56003

Capital and Accumulated Other97

Capital and Accumulated Other Comprehensive Income (Loss) (Partnership Units Narrative) (Details) $ in Millions	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Class of Stock [Line Items]
Common stock conversion ratio	1
Redemption value of LP units	$ 226.3	$ 192.7
Digital Realty Trust, L.P.
Class of Stock [Line Items]
Common stock conversion ratio	1
Redemption value of LP units	$ 226.3	$ 192.7

Capital and Accumulated Other98

Capital and Accumulated Other Comprehensive Income (Loss) (Schedule of Distributions) (Details) - USD ($) $ / shares in Units, $ in Thousands	Sep. 15, 2016	Aug. 24, 2015	Apr. 07, 2014	Mar. 26, 2014	Jun. 28, 2013	Apr. 09, 2013	Apr. 18, 2012	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Series E Preferred Stock and Unit
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 10,062	$ 20,124	$ 20,124
Annual rate of dividend per share (in dollars per unit)								$ 1.75
Preferred stock, redemption price per share (in dollars per unit)	$ 25.35972
Preferred Stock, liquidation preference per share/unit (in dollars per unit)	$ 25							$ 25	$ 25
Accrued and unpaid dividends up to but not including the redemption date	$ 4,100
Redemption premium	$ 10,300							$ 10,300
Series E Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 10,062	$ 20,124	20,124
Annual rate of dividend per share (in dollars per unit)								$ 1.750
Preferred stock, redemption price per share (in dollars per unit)	$ 25.35972
Preferred Stock, liquidation preference per share/unit (in dollars per unit)	$ 25							$ 25	$ 25
Accrued and unpaid dividends up to but not including the redemption date	$ 4,100
Redemption premium	$ 10,300
Series E Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										5,031
Series E Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									$ 5,031
Series E Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,031
Series E Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 5,031
Series E Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								5,031
Series E Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series E Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series E Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
Series E Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								0
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 unit)							$ 1.65625	$ 1.65625
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)							25	$ 25	$ 25
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
Annual rate of dividend per share (in dollars per unit)							1.65625	$ 1.656
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)							$ 25	$ 25	$ 25
Series F Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,023
Series F Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									$ 3,023
Series F Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,023
Series F Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 3,023
Series F Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,023
Series F Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.
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	14,688
Annual rate of dividend per share (in dollars per unit)					$ 0.334550	$ 1.46875		$ 1.46875
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)						25		$ 25	$ 25
Series G Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 14,688	$ 14,688	14,688
Annual rate of dividend per share (in dollars per unit)						1.46875		$ 1.469
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)						$ 25		$ 25	$ 25
Series G Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										3,672
Series G Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									$ 3,672
Series G Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									3,672
Series G Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 3,672
Series G Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,672
Series G Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.
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	$ 26,920	20,564
Annual rate of dividend per share (in dollars per unit)				$ 1.84375				$ 1.84375
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)				$ 25				$ 25	$ 25
Series H Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 26,920	$ 26,920	20,564
Annual rate of dividend per share (in dollars per unit)			$ 1.84375					$ 1.844
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)			$ 25					$ 25	$ 25
Series H Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series H Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series H Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										7,104
Series H Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										7,104
Series H Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										6,730
Series H Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										6,730
Series H Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										6,730
Series H Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										6,730
Series H Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									$ 6,730
Series H Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									6,730
Series H Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 6,730
Series H Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								6,730
Series H Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.
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								$ 15,876	$ 5,600	0
Annual rate of dividend per share (in dollars per unit)								$ 1.588
Preferred stock, redemption price per share (in dollars per unit)								25
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25						$ 25	$ 25
Series I Preferred Stock and Unit | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 15,876	$ 5,600	0
Annual rate of dividend per share (in dollars per unit)		1.5875						$ 1.588
Preferred Stock, liquidation preference per share/unit (in dollars per unit)		$ 25						$ 25	$ 25
Series I Preferred Stock and Unit | February 11, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | February 11, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | April 29, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | April 29, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | July 21, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | July 21, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | November 4, 2014
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | November 4, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units										0
Series I Preferred Stock and Unit | February 25, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									$ 0
Series I Preferred Stock and Unit | February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									0
Series I Preferred Stock and Unit | May 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									0
Series I Preferred Stock and Unit | May 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									0
Series I Preferred Stock and Unit | August 11, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									0
Series I Preferred Stock and Unit | August 11, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									0
Series I Preferred Stock and Unit | November 12, 2015
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,600
Series I Preferred Stock and Unit | November 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units									5,600
Series I Preferred Stock and Unit | February 17, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								$ 3,969
Series I Preferred Stock and Unit | February 17, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Series I Preferred Stock and Unit | May 11, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Series I Preferred Stock and Unit | May 11, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Series I Preferred Stock and Unit | August 10, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Series I Preferred Stock and Unit | August 10, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Series I Preferred Stock and Unit | November 9, 2016
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Series I Preferred Stock and Unit | November 9, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, preferred stock/units								3,969
Common Units | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 539,044	$ 480,623	$ 454,414
Common stock dividend per share amount (in dollars per share)								$ 3.520	$ 3.400	$ 3.320
Common Units | February 11, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units										$ 109,378
Common Units | April 29, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units										115,008
Common Units | July 21, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units										115,012
Common Units | November 4, 2014 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units										$ 115,016
Common Units | February 25, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units									$ 117,896
Common Units | May 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units									117,938
Common Units | August 11, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units									117,962
Common Units | November 12, 2015 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units									$ 126,827
Common Units | February 17, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 131,587
Common Units | May 11, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								131,607
Common Units | August 10, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								131,657
Common Units | November 9, 2016 | Digital Realty Trust, L.P.
Dividends Payable [Line Items]
Dividends/Distributions, common stock/units								$ 144,193

Capital and Accumulated Other99

Capital and Accumulated Other Comprehensive Income (Loss) (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Net current period change	$ (85,300)	$ (50,775)
Reclassification to interest expense from interest rate swaps	0	0
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Net current period change	41,395	(3,338)
Reclassification to interest expense from interest rate swaps	4,890	2,569
Accumulated Other Comprehensive Income (Loss), net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Net current period change	(43,905)	(54,113)
Reclassification to interest expense from interest rate swaps	4,890	2,569
Digital Realty Trust, L.P.
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of Beginning of Period	4,535,137	3,914,238
Balance as of End of Period	5,132,297	4,535,137
Digital Realty Trust, L.P. | Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of Beginning of Period	(93,883)	(42,138)
Net current period change	(86,621)	(51,745)
Reclassification to interest expense from interest rate swaps	0	0
Balance as of End of Period	(180,504)	(93,883)
Digital Realty Trust, L.P. | Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of Beginning of Period	(7,081)	(6,295)
Net current period change	41,998	(3,407)
Reclassification to interest expense from interest rate swaps	4,968	2,621
Balance as of End of Period	39,885	(7,081)
Digital Realty Trust, L.P. | Accumulated Other Comprehensive Income (Loss), net
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance as of Beginning of Period	(100,964)	(48,433)
Net current period change	(44,623)	(55,152)
Reclassification to interest expense from interest rate swaps	4,968	2,621
Balance as of End of Period	$ (140,619)	$ (100,964)

Incentive Plan (Narrative) (Det

Incentive Plan (Narrative) (Details)	May 02, 2007USD ($)shares	Dec. 31, 2016shares	May 01, 2007shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares granted per employee (in shares)	1,500,000
Maximum amount of cash paid per employee | $	$ 10,000,000
Number of shares remaining for issuance under the Incentive Plan (in shares)		3,965,682
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 (in shares)			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 (in shares)	9,474,102
Increase in number of shares reserved for issuance (in shares)	5,000,000
Two Thousand Fourteen Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of units to shares ratio		1

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, 2016	Dec. 31, 2015	Dec. 31, 2014
Shares:
Unvested, beginning of period (in shares)	278,301
Granted (in shares)	29,544
Vested (in shares)	(175,975)
Cancelled or expired (in shares)	(3,048)
Unvested, end of period (in shares)	128,822	278,301
Weighted-Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share)	$ 62.85
Granted (in dollars per share)	87.18
Vested (in dollars per share)	64.35
Cancelled (in dollars per share)	54.48
Unvested, end of period (in dollars per share)	$ 66.58	$ 62.85
Share/unit compensation expense	$ 4.5	$ 5.9	$ 12.6
Capitalized expense related to construction and leasing activities	1.8	1.2	$ 1.7
Unearned compensation	$ 5.6	$ 9.9
Unearned compensation, period of recognition	2 years 27 days

Incentive Plan (Market Performa

Incentive Plan (Market Performance-Based Awards) (Details) $ in Millions	Feb. 16, 2016	Jan. 01, 2016	Feb. 24, 2015	Feb. 11, 2014	Dec. 31, 2016USD ($)simulationshares	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Market Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period					3 years
Number of trials run | simulation					100,000
Expected volatility rate	26.00%	22.00%	24.00%	33.00%
Risk free interest rate	0.89%	1.32%	1.00%	0.67%
Fair value of awards | $					$ 34.3
Expected service period					4 years
Unearned compensation | $					$ 25.6	$ 17.8
Compensation expense | $					7.9	4.1	$ 3
Capitalized expense related to construction and leasing activities | $					$ 1.9	$ 4.1	$ 1.4
Market Performance-Based Awards | 2014 Performance Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period					3 years
Market Performance-Based Awards | 2014 Performance Grant | 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%
Market Performance-Based Awards | 2014 Performance Grant | Threshold Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
Performance threshold percentage					0.00%
Market Performance-Based Awards | 2014 Performance Grant | Target Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Performance threshold percentage					3.25%
Market Performance-Based Awards | 2014 Performance Grant | High Level (greater than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					100.00%
Performance threshold percentage					6.50%
Market Performance-Based Awards | 2014 Performance Grant | Vesting on February 27, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Market Performance-Based Awards | 2014 Performance Grant | Vesting on February 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Market Performance-Based Awards | 2015 Performance Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period					3 years
Market Performance-Based Awards | 2015 Performance Grant | 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%)
Market Performance-Based Awards | 2015 Performance Grant | Threshold Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
Performance threshold percentage					(3.00%)
Market Performance-Based Awards | 2015 Performance Grant | Target Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Performance threshold percentage					1.00%
Market Performance-Based Awards | 2015 Performance Grant | High Level (greater than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					100.00%
Performance threshold percentage					5.00%
Market Performance-Based Awards | 2015 Performance Grant | Vesting on February 27, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Market Performance-Based Awards | 2015 Performance Grant | Vesting on February 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Market Performance-Based Awards | 2016 Performance Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period					3 years
Market Performance-Based Awards | 2016 Performance Grant | 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%)
Market Performance-Based Awards | 2016 Performance Grant | Threshold Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
Performance threshold percentage					(3.00%)
Market Performance-Based Awards | 2016 Performance Grant | Target Level
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					50.00%
Performance threshold percentage					1.00%
Market Performance-Based Awards | 2016 Performance Grant | High Level (greater than)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					100.00%
Performance threshold percentage					5.00%
Class D Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vested (in shares)					399,250
Units granted (in shares)					1,683,182
Distribution Equivalent Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vested (in shares)					44,702
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vested (in shares)					138,567
Units granted (in shares)					459,569

Incentive Plan (Summary of Ince

Incentive Plan (Summary of Incentive Award Plan's Stock Option) (Details)	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Shares:
Options outstanding, beginning of period (in shares) | shares	51,622
Exercised (in shares) | shares	(33,948)
Options outstanding, end of period (in shares) | shares	17,674
Exercisable, end of period (in shares) | shares	17,674
Weighted average exercise price
Options outstanding, beginning of period (in dollars per share) | $ / shares	$ 41.04
Exercised (in dollars per share) | $ / shares	40.68
Options outstanding, end of period (in dollars per share) | $ / shares	41.73
Exercisable, end of period (in dollars per share) | $ / shares	$ 41.73

Incentive Plan (Summary of Stoc

Incentive Plan (Summary of Stock Options Outstanding and Exercisable) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	17,674	51,622
$ 41.73
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, lower limit (in dollars per share)	$ 41.73
Exercise price, upper limit (in dollars per share)	$ 41.73
Number of options outstanding (in shares)	17,674
Weighted average remaining contractual life (years), Outstanding	4 months
Weighted average exercise price per option, Outstanding (in dollars per share)	$ 41.73
Aggregate intrinsic value, Outstanding	$ 999,111

Incentive Plan (Restricted Stoc

Incentive Plan (Restricted Stock Activity) (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Shares:
Unvested, beginning of period (in shares)	271,901
Granted (in shares)	162,685
Vested (in shares)	(120,169)
Cancelled or expired (in shares)	(39,775)
Unvested, end of period (in shares)	274,642	271,901
Weighted-Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share)	$ 61.47
Granted (in dollars per share)	83.58
Vested (in dollars per share)	61.30
Cancelled or expired (in dollars per share)	67.22
Unvested, end of period (in dollars per share)	$ 73.81	$ 61.47
Additional Information:
Restricted stock expense	$ 4.1	$ 2.5	$ 2.5
Capitalized expense related to construction and leasing activities	2.8	2.7	$ 2.7
Compensation not yet recognized	$ 14.7	$ 10.4
Unearned compensation, period of recognition	2 years 10 months 12 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, 2016	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		$ 3.6	$ 3.4	$ 2.8

Derivative Instruments (Details

Derivative Instruments (Details) £ in Thousands

12 Months Ended

Dec. 31, 2016USD ($)

Dec. 31, 2015USD ($)

Dec. 31, 2014USD ($)

Dec. 31, 2016

Dec. 31, 2016$ / SGD

Dec. 31, 2016$ / €

Dec. 31, 2016$ / £

Dec. 31, 2016$ / CAD

Dec. 31, 2016$ / AUD

Dec. 31, 2016GBP (£)

Dec. 31, 2016instrument

Dec. 31, 2015$ / SGD

Dec. 31, 2015$ / €

Dec. 31, 2015$ / £

Dec. 31, 2015$ / AUD

Derivative [Line Items]

Ineffective portion of cash flow hedges

$ 0

$ 0

$ 800,000

Notional Amount

1,124,181,000

$ 469,484,000

Gain (loss) to be reclassified within twelve months

$ (3,800,000)

Digital Realty Trust, L.P. | Unsecured term loan — 5-year

Derivative [Line Items]

Debt instrument term

5 years

5 years

Digital Realty Trust, L.P. | Unsecured term loan — 7-year

Derivative [Line Items]

Debt instrument term

7 years

Digital Realty Trust, L.P. | Unsecured term loan

Derivative [Line Items]

Derivative forward exchange rate (in dollars per share)

0.69

1.05

1.23

0.72

0.70

1.09

1.47

0.73

Digital Realty Trust, L.P. | Unsecured term loan | Singapore dollar (SGD)

Derivative [Line Items]

Derivative forward exchange rate (in dollars per share) | $ / SGD

0.69

0.70

Digital Realty Trust, L.P. | Unsecured term loan | British pound sterling (£)

Derivative [Line Items]

Derivative forward exchange rate (in dollars per share) | $ / £

1.23

Digital Realty Trust, L.P. | Unsecured term loan | Canadian dollar (CAD)

Derivative [Line Items]

Derivative forward exchange rate (in dollars per share) | $ / CAD

0.74

Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

$ 11,208,000

$ 1,143,000

Interest Rate Swap, 0.932

Derivative [Line Items]

Notional Amount

206,000,000

206,000,000

Strike Rate

0.932%

Interest Rate Swap, 0.932 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

(90,000)

(416,000)

Interest Rate Swap, 0.670

Derivative [Line Items]

Notional Amount

54,905,000

54,905,000

Strike Rate

0.67%

Interest Rate Swap, 0.670 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

16,000

69,000

Interest Rate Swap, 0.500

Derivative [Line Items]

Notional Amount

0

75,000,000

Strike Rate

0.50%

Interest Rate Swap, 0.500 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

0

(10,000)

Interest Rate Swap, 1.016

Derivative [Line Items]

Notional Amount

75,000,000

0

Strike Rate

1.016%

Interest Rate Swap, 1.016 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

1,911,000

0

Interest Rate Swap, 1.164

Derivative [Line Items]

Notional Amount

75,000,000

0

Strike Rate

1.164%

Interest Rate Swap, 1.164 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

1,487,000

0

Interest Rate Swap, 1.435

Derivative [Line Items]

Notional Amount

300,000,000

0

Strike Rate

1.435%

Interest Rate Swap, 1.435 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

8,128,000

0

Interest Rate Swap, 0.925

Derivative [Line Items]

Notional Amount

130,850,000

133,579,000

Strike Rate

0.925%

Interest Rate Swap, 0.925 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

18,000

1,500,000

Interest Rate Swap, 0.792

Derivative [Line Items]

Notional Amount

209,132,000

0

Strike Rate

0.792%

Interest Rate Swap, 0.792 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

(1,818,000)

0

Interest Rate Swap, 0.779

Derivative [Line Items]

Notional Amount

73,294,000

0

Strike Rate

0.779%

Interest Rate Swap, 0.779 | Level 2

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

1,556,000

$ 0

Currency forward contracts

Derivative [Line Items]

Loss on derivatives not designated as hedging

3,100,000

Designated as Hedging Instrument | Currency forward contracts

Derivative [Line Items]

Fair Value at Significant Other Observable Inputs (Level 2)

73,498,000

Number of Instruments | instrument

4

Designated as Hedging Instrument | Currency forward contracts | Notional Amount Sold

Derivative [Line Items]

Notional Amount | £

£ 357,299

Designated as Hedging Instrument | Currency forward contracts | Notional Amount Purchased

Derivative [Line Items]

Notional Amount

$ 518,469,000

Fair Value of Instruments (Esti

Fair Value of Instruments (Estimated Fair Value and Carrying Amounts) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Global revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs	$ 10,900	$ 7,600
Unsecured term loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs	6,100	1,300
Unsecured senior notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs	25,400	26,000
Fair value of long-term debt	15,600	17,900
Fair value of long-term debt	$ 15,600	17,900
Unsecured senior notes | Five Point Eight Seven Five Percent Due Twenty Twenty [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	5.875%
Unsecured senior notes | 3.400% notes due 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.40%
Unsecured senior notes | 3.950% notes due 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.95%
Unsecured senior notes | 3.625% notes due 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.625%
Unsecured senior notes | 4.750% notes due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	4.75%
Unsecured senior notes | 4.750% notes due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	4.25%
Mortgage loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs	$ 0	300
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	6,129,866	6,075,148
Fair value of long-term debt	6,129,866	6,075,148
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	5,880,996	5,934,241
Fair value of long-term debt	5,880,996	5,934,241
Level 2 | Estimated Fair Value | Global revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	210,077	967,884
Level 2 | Estimated Fair Value | Unsecured term loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	1,488,498	924,568
Level 2 | Estimated Fair Value | Unsecured senior notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Exchangeable senior debentures	4,428,074	3,868,979
Level 2 | Estimated Fair Value | Mortgage loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage Loans	3,217	313,717
Level 2 | Carrying Value | Global revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	210,077	967,884
Level 2 | Carrying Value | Unsecured term loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	1,488,498	924,568
Level 2 | Carrying Value | Unsecured senior notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Exchangeable senior debentures	4,179,171	3,738,606
Level 2 | Carrying Value | Mortgage loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage Loans	$ 3,250	$ 303,183

Tenant Leases (Schedule of Futu

Tenant Leases (Schedule of Future Minimum Lease Payments to be Received) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Operating Leases, Future Minimum Payments Receivable [Abstract]
2,017	$ 1,608,054
2,018	1,313,925
2,019	1,112,743
2,020	876,231
2,021	722,729
Thereafter	2,387,481
Total	$ 8,021,163

Commitments and Contingencie110

Commitments and Contingencies (Details) $ in Thousands, £ in Millions, SGD in Millions	12 Months Ended					42 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2015GBP (£)	Dec. 31, 2014USD ($)	Dec. 31, 2014GBP (£)	Dec. 31, 2015USD ($)	Dec. 31, 2015GBP (£)	Dec. 31, 2016SGD	Jul. 11, 2012USD ($)	Jul. 11, 2012GBP (£)
Commitments and Contingencies [Line Items]
Lease term	12 years
Lease term extension	5 years
Rent expense	$ 83,600	$ 24,600		$ 16,200
Increase (decrease) in fair value of contingent consideration	0	(44,276)		(8,093)
Commitments related to construction contracts	320,900
Convergence Business Park
Commitments and Contingencies [Line Items]
Sale price of building	24,000
Real estate price, per square acre	225
29A International Business Park
Commitments and Contingencies [Line Items]
Additional performance based consideration earned (maximum)	34,500							SGD 50
Contingent liability	23,800	23,800		12,600		$ 23,800
Sentrum Portfolio
Commitments and Contingencies [Line Items]
Contingent liability									$ 87,600	£ 56.5
Reduction in fair value		45,900	£ 30.3
Increase (decrease) in fair value of contingent consideration	$ 0	(43,000)		(8,400)
Earnout payment		$ 1,100	£ 0.7	$ 10,300	£ 6.2	$ 37,200	£ 23.8

Commitments and Contingencie111

Commitments and Contingencies (Schedule of Future Minimum Lease Payments) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,017	$ 70,079
2,018	73,474
2,019	78,578
2,020	81,403
2,021	81,803
Thereafter	665,803
Total minimum commitment under leases	$ 1,051,140

Commitments and Contingencie112

Commitments and Contingencies (Schedule of Future Minimum Capital Lease Payments) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,017	$ 10,263
2,018	10,268
2,019	11,909
2,020	12,004
2,021	12,099
Thereafter	196,299
Total minimum lease payments	252,842
Less amount representing interest	(90,658)
Present value	$ 162,184

Quarterly Financial Informat113

Quarterly Financial Information (Digital Realty Trust, Inc.) (unaudited) (Summary Of Selected Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Total operating revenues	$ 576,787	$ 546,293	$ 514,934	$ 504,199	$ 500,443	$ 435,989	$ 420,295	$ 406,609	$ 2,142,213	$ 1,763,336	$ 1,616,438
Net income (loss)	96,140	222,435	50,944	62,333	(16,573)	57,842	137,997	122,325	431,852	301,591	203,415
Net income attributable to Digital Realty Trust, Inc.	95,075	219,188	50,375	61,549	(15,983)	56,978	135,511	120,183	426,187	296,689	200,183
Preferred stock dividends and issuance costs associated with redeemed preferred stock	17,393	31,858	22,424	22,424	24,056	18,456	18,456	18,455	83,771	79,423	67,465
Net income available to common stockholders/unitholders	$ 77,682	$ 187,330	$ 27,951	$ 39,125	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ 332,088	$ 217,266	$ 132,718
Basic net income (loss) per share available to common stockholders (in dollars per share)	$ 0.49	$ 1.27	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.21	$ 1.57	$ 1
Diluted net income (loss) per share available to common stockholders (in dollars per share)	$ 0.49	$ 1.25	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.20	$ 1.56	$ 0.99

Quarterly Financial Informat114

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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information [Line Items]
Total operating revenues	$ 576,787	$ 546,293	$ 514,934	$ 504,199	$ 500,443	$ 435,989	$ 420,295	$ 406,609	$ 2,142,213	$ 1,763,336	$ 1,616,438
Net income (loss)	96,140	222,435	50,944	62,333	(16,573)	57,842	137,997	122,325	431,852	301,591	203,415
Net income (loss) attributable to Digital Realty Trust, L.P.	95,075	219,188	50,375	61,549	(15,983)	56,978	135,511	120,183	426,187	296,689	200,183
Preferred unit distributions and issuance costs associated with redeemed preferred units	17,393	31,858	22,424	22,424	24,056	18,456	18,456	18,455	83,771	79,423	67,465
Net income available to common stockholders/unitholders	$ 77,682	$ 187,330	$ 27,951	$ 39,125	$ (40,039)	$ 38,522	$ 117,055	$ 101,728	$ 332,088	$ 217,266	$ 132,718
Basic net income (loss) per unit available to common unitholders (in dollars per unit)	$ 0.49	$ 1.27	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.21	$ 1.57	$ 1
Diluted net income (loss) per unit available to common unitholders (in dollars per unit)	$ 0.49	$ 1.25	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.20	$ 1.56	$ 0.99
Digital Realty Trust, L.P.
Quarterly Financial Information [Line Items]
Total operating revenues	$ 576,787	$ 546,293	$ 514,934	$ 504,199	$ 500,443	$ 435,989	$ 420,295	$ 406,609	$ 2,142,213	$ 1,763,336	$ 1,616,438
Net income (loss)	96,140	222,435	50,944	62,333	(16,785)	56,689	137,997	122,325	431,852	300,226	203,415
Net income (loss) attributable to Digital Realty Trust, L.P.	96,229	222,212	50,832	62,212	(16,903)	56,572	137,888	122,209	431,485	299,766	202,950
Preferred unit distributions and issuance costs associated with redeemed preferred units	17,393	31,858	22,424	22,424	24,056	18,456	18,456	18,455	83,771	79,423	67,465
Net income available to common stockholders/unitholders	$ 78,836	$ 190,354	$ 28,408	$ 39,788	$ (40,959)	$ 38,116	$ 119,432	$ 103,754	$ 337,386	$ 220,343	$ 135,485
Basic net income (loss) per unit available to common unitholders (in dollars per unit)	$ 0.49	$ 1.27	$ 0.19	$ 0.27	$ (0.28)	$ 0.28	$ 0.86	$ 0.75	$ 2.21	$ 1.56	$ 1
Diluted net income (loss) per unit available to common unitholders (in dollars per unit)	$ 0.49	$ 1.25	$ 0.19	$ 0.27	$ (0.28)	$ 0.27	$ 0.86	$ 0.75	$ 2.20	$ 1.55	$ 0.99

Subsequent Events (Dividends De

Subsequent Events (Dividends Declared and Distributions Per Unit) (Details) - $ / shares	Mar. 01, 2017	Mar. 26, 2014	Jun. 28, 2013	Apr. 09, 2013	Apr. 18, 2012	Dec. 31, 2016
Series F Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)					$ 1.65625	$ 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		1.46875
Series H Preferred Stock and Unit
Subsequent Event [Line Items]
Annual rate of dividend per share (in dollars per share)		$ 1.84375				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 F Preferred Stock and Unit
Subsequent Event [Line Items]
Dividend and distribution amount (in dollars per share)	$ 0.414063
Dividend and distribution payable date	Mar. 31, 2017
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2017
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 (in dollars per share)	$ 0.367188
Dividend and distribution payable date	Mar. 31, 2017
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2017
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 (in dollars per share)	$ 0.460938
Dividend and distribution payable date	Mar. 31, 2017
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2017
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 (in dollars per share)	$ 0.396875
Dividend and distribution payable date	Mar. 31, 2017
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2017
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 (in dollars per share)	$ 0.930000
Dividend and distribution payable date	Mar. 31, 2017
Dividend and distribution payable to holders of record on (date)	Mar. 15, 2017
Annual rate of dividend per share (in dollars per share)	$ 3.720

Schedule III Properties And 116

Schedule III Properties And Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 2,916
Land, Initial costs	786,205
Acquired ground lease, Initial costs	14,986
Buildings and improvements, Initial costs	5,231,322
Improvements, Costs capitalized subsequent to acquisition	5,525,956
Carry costs, Costs capitalized subsequent to acquisition	(5,900)
Land, Total costs	746,822
Acquired ground lease, Total costs	11,335
Buildings and improvements, Total costs	10,800,312
Total	11,558,469	$ 10,915,373	$ 9,982,612	$ 9,879,578
Accumulated depreciation and amortization	$ (2,668,509)	$ (2,251,268)	$ (1,874,054)	$ (1,565,996)
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
Improvements, Costs capitalized subsequent to acquisition	12,246
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,942
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,430
Total	38,372
Accumulated depreciation and amortization	$ (15,119)
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
Improvements, Costs capitalized subsequent to acquisition	49,960
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,838
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	127,564
Total	129,402
Accumulated depreciation and amortization	$ (60,995)
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
Improvements, Costs capitalized subsequent to acquisition	61,695
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,140
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	110,221
Total	115,361
Accumulated depreciation and amortization	$ (61,473)
2334 Lundy Place
Real Estate and Accumulated Depreciation [Line Items]
Properties	2334 Lundy Place
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	3,607
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	23,008
Improvements, Costs capitalized subsequent to acquisition	67
Carry costs, Costs capitalized subsequent to acquisition	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	$ (9,739)
34551 Ardenwood Boulevard 1-4
Real Estate and Accumulated Depreciation [Line Items]
Properties	34551 Ardenwood Boulevard 1-4
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	15,330
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	32,419
Improvements, Costs capitalized subsequent to acquisition	10,583
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	15,330
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	43,002
Total	58,332
Accumulated depreciation and amortization	$ (16,861)
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
Improvements, Costs capitalized subsequent to acquisition	72,349
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,477
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	82,679
Total	84,156
Accumulated depreciation and amortization	$ (55,085)
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
Improvements, Costs capitalized subsequent to acquisition	(98)
Carry costs, Costs capitalized subsequent to acquisition	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	$ (6,963)
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
Improvements, Costs capitalized subsequent to acquisition	31,541
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,250
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	43,119
Total	44,369
Accumulated depreciation and amortization	$ (26,328)
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
Improvements, Costs capitalized subsequent to acquisition	43,322
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,983
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	53,972
Total	56,955
Accumulated depreciation and amortization	$ (25,219)
600 West Seventh Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	600 West Seventh Street
Metropolitan Area	Los Angeles
Encumbrances	$ 0
Land, Initial costs	18,478
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	50,824
Improvements, Costs capitalized subsequent to acquisition	56,357
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	18,478
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	107,181
Total	125,659
Accumulated depreciation and amortization	$ (58,833)
2045 & 2055 LaFayette Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	2045 & 2055 LaFayette Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	6,065
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	43,817
Improvements, Costs capitalized subsequent to acquisition	20
Carry costs, Costs capitalized subsequent to acquisition	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	$ (17,228)
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
Improvements, Costs capitalized subsequent to acquisition	2,345
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,881
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,818
Total	42,699
Accumulated depreciation and amortization	$ (15,353)
150 South First Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	150 South First Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	2,068
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	29,214
Improvements, Costs capitalized subsequent to acquisition	1,499
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,068
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	30,713
Total	32,781
Accumulated depreciation and amortization	$ (11,735)
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
Improvements, Costs capitalized subsequent to acquisition	93,524
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	14,427
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	169,301
Total	183,728
Accumulated depreciation and amortization	$ (72,412)
1100 Space Park Drive
Real Estate and Accumulated Depreciation [Line Items]
Properties	1100 Space Park Drive
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	5,130
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	18,206
Improvements, Costs capitalized subsequent to acquisition	34,917
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,130
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	53,123
Total	58,253
Accumulated depreciation and amortization	$ (29,167)
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
Improvements, Costs capitalized subsequent to acquisition	6
Carry costs, Costs capitalized subsequent to acquisition	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	$ (3,462)
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
Improvements, Costs capitalized subsequent to acquisition	(5,701)
Carry costs, Costs capitalized subsequent to acquisition	(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	$ (3,945)
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
Improvements, Costs capitalized subsequent to acquisition	224,747
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	8,620
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	327,825
Total	336,445
Accumulated depreciation and amortization	$ (185,776)
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
Improvements, Costs capitalized subsequent to acquisition	138
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,181
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,699
Total	13,880
Accumulated depreciation and amortization	$ (4,862)
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
Improvements, Costs capitalized subsequent to acquisition	37
Carry costs, Costs capitalized subsequent to acquisition	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	$ (7,589)
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
Improvements, Costs capitalized subsequent to acquisition	48
Carry costs, Costs capitalized subsequent to acquisition	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	$ (4,908)
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
Improvements, Costs capitalized subsequent to acquisition	232
Carry costs, Costs capitalized subsequent to acquisition	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	$ (5,809)
731 East Trade Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	731 East Trade Street
Metropolitan Area	Charlotte
Encumbrances	$ 2,916
Land, Initial costs	1,748
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	5,727
Improvements, Costs capitalized subsequent to acquisition	257
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,748
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,984
Total	7,732
Accumulated depreciation and amortization	(2,233)
Unamortized net premiums	$ 334
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
Improvements, Costs capitalized subsequent to acquisition	2,069
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,098
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,196
Total	6,294
Accumulated depreciation and amortization	$ (2,186)
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
Improvements, Costs capitalized subsequent to acquisition	6,180
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,271
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	9,918
Total	11,189
Accumulated depreciation and amortization	$ (7,186)
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
Improvements, Costs capitalized subsequent to acquisition	22,772
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	38,027
Total	38,027
Accumulated depreciation and amortization	$ (14,472)
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
Improvements, Costs capitalized subsequent to acquisition	33,802
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	7,849
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	61,683
Total	69,532
Accumulated depreciation and amortization	$ (15,304)
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
Improvements, Costs capitalized subsequent to acquisition	11,458
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,691
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	24,027
Total	25,718
Accumulated depreciation and amortization	$ (14,222)
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
Improvements, Costs capitalized subsequent to acquisition	(2,171)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,900
Total	17,900
Accumulated depreciation and amortization	$ (6,585)
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
Improvements, Costs capitalized subsequent to acquisition	68,296
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,177
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	73,173
Total	74,350
Accumulated depreciation and amortization	$ (8,207)
3 Corporate Place
Real Estate and Accumulated Depreciation [Line Items]
Properties	3 Corporate Place
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	1,543
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	12,678
Improvements, Costs capitalized subsequent to acquisition	85,251
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,543
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	97,929
Total	99,472
Accumulated depreciation and amortization	$ (76,002)
1115 Centennial Avenue
Real Estate and Accumulated Depreciation [Line Items]
Properties	1115 Centennial Avenue
Metropolitan Area	New York
Encumbrances	$ 0
Land, Initial costs	581
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	42,222
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	581
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	42,222
Total	42,803
Accumulated depreciation and amortization	$ 0
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
Improvements, Costs capitalized subsequent to acquisition	28,773
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,196
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	42,810
Total	45,006
Accumulated depreciation and amortization	$ (27,510)
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
Improvements, Costs capitalized subsequent to acquisition	963
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	87
Buildings and improvements, Total costs	7,889
Total	7,976
Accumulated depreciation and amortization	$ (4,804)
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
Improvements, Costs capitalized subsequent to acquisition	2,279
Carry costs, Costs capitalized subsequent to acquisition	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	$ (5,904)
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
Improvements, Costs capitalized subsequent to acquisition	45
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,480
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	34,842
Total	36,322
Accumulated depreciation and amortization	$ (12,631)
Digital Houston
Real Estate and Accumulated Depreciation [Line Items]
Properties	Digital Houston
Metropolitan Area	Houston
Encumbrances	$ 0
Land, Initial costs	6,965
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	23,492
Improvements, Costs capitalized subsequent to acquisition	145,603
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	6,965
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	169,095
Total	176,060
Accumulated depreciation and amortization	$ (46,323)
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
Improvements, Costs capitalized subsequent to acquisition	109,068
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,524
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	266,890
Total	271,414
Accumulated depreciation and amortization	$ (115,072)
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
Improvements, Costs capitalized subsequent to acquisition	(2,374)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,076
Total	11,076
Accumulated depreciation and amortization	$ (4,168)
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
Improvements, Costs capitalized subsequent to acquisition	72,561
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	72,561
Total	72,561
Accumulated depreciation and amortization	$ (35,184)
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
Improvements, Costs capitalized subsequent to acquisition	456
Carry costs, Costs capitalized subsequent to acquisition	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	$ (2,134)
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
Improvements, Costs capitalized subsequent to acquisition	19
Carry costs, Costs capitalized subsequent to acquisition	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	$ (1,568)
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
Improvements, Costs capitalized subsequent to acquisition	27,622
Carry costs, Costs capitalized subsequent to acquisition	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,141
Total	36,141
Accumulated depreciation and amortization	$ (24,871)
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
Improvements, Costs capitalized subsequent to acquisition	14,822
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,523
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	55,250
Total	56,773
Accumulated depreciation and amortization	$ (18,759)
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
Improvements, Costs capitalized subsequent to acquisition	18,687
Carry costs, Costs capitalized subsequent to acquisition	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,375
Total	36,375
Accumulated depreciation and amortization	$ (28,345)
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
Improvements, Costs capitalized subsequent to acquisition	1,211
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	1,369
Total	1,369
Accumulated depreciation and amortization	$ (1,200)
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
Improvements, Costs capitalized subsequent to acquisition	1,307
Carry costs, Costs capitalized subsequent to acquisition	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	$ (5,246)
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
Improvements, Costs capitalized subsequent to acquisition	49,447
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,354
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	59,752
Total	63,106
Accumulated depreciation and amortization	$ (44,952)
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
Improvements, Costs capitalized subsequent to acquisition	1
Carry costs, Costs capitalized subsequent to acquisition	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	$ (10,092)
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
Improvements, Costs capitalized subsequent to acquisition	92,840
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,653
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	116,471
Total	121,124
Accumulated depreciation and amortization	$ (80,752)
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
Improvements, Costs capitalized subsequent to acquisition	1,366
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,027
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,613
Total	20,640
Accumulated depreciation and amortization	$ (5,181)
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
Improvements, Costs capitalized subsequent to acquisition	76,648
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,490
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	94,092
Total	97,582
Accumulated depreciation and amortization	$ (46,167)
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
Improvements, Costs capitalized subsequent to acquisition	38,956
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	19,670
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	50,640
Total	70,310
Accumulated depreciation and amortization	$ (10,514)
1 Solutions Parkway
Real Estate and Accumulated Depreciation [Line Items]
Properties	1 Solutions 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
Improvements, Costs capitalized subsequent to acquisition	1,460
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,301
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	22,099
Total	25,400
Accumulated depreciation and amortization	$ (6,304)
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
Improvements, Costs capitalized subsequent to acquisition	46,136
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,106
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	55,087
Total	59,193
Accumulated depreciation and amortization	$ (45,440)
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
Improvements, Costs capitalized subsequent to acquisition	17,681
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,372
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	27,974
Total	30,346
Accumulated depreciation and amortization	$ (15,888)
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
Improvements, Costs capitalized subsequent to acquisition	(6,745)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	860
Buildings and improvements, Total costs	17,028
Total	17,888
Accumulated depreciation and amortization	$ (4,643)
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
Improvements, Costs capitalized subsequent to acquisition	(860)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	944
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	731
Total	1,675
Accumulated depreciation and amortization	$ (168)
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
Improvements, Costs capitalized subsequent to acquisition	31,421
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	629
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	32,409
Total	33,038
Accumulated depreciation and amortization	$ (4,463)
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
Improvements, Costs capitalized subsequent to acquisition	74,745
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	13,870
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	99,305
Total	113,175
Accumulated depreciation and amortization	$ (43,075)
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
Improvements, Costs capitalized subsequent to acquisition	285,554
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,019
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	302,958
Total	305,977
Accumulated depreciation and amortization	$ (90,405)
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
Improvements, Costs capitalized subsequent to acquisition	835
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,165
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	10,769
Total	12,934
Accumulated depreciation and amortization	$ (2,563)
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
Improvements, Costs capitalized subsequent to acquisition	(8,672)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	15,246
Total	15,246
Accumulated depreciation and amortization	$ (3,720)
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
Improvements, Costs capitalized subsequent to acquisition	26,767
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,398
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	27,068
Total	30,466
Accumulated depreciation and amortization	$ (16,276)
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
Improvements, Costs capitalized subsequent to acquisition	2,625
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,056
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,636
Total	5,692
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
Improvements, Costs capitalized subsequent to acquisition	30,780
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,061
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	47,228
Total	49,289
Accumulated depreciation and amortization	$ (27,042)
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
Improvements, Costs capitalized subsequent to acquisition	73,667
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,509
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	73,667
Total	79,176
Accumulated depreciation and amortization	$ (30,048)
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
Improvements, Costs capitalized subsequent to acquisition	63,893
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,266
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	67,634
Total	69,900
Accumulated depreciation and amortization	$ (32,135)
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
Improvements, Costs capitalized subsequent to acquisition	69,396
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,446
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	71,055
Total	72,501
Accumulated depreciation and amortization	$ (13,853)
1210 Integrity Drive
Real Estate and Accumulated Depreciation [Line Items]
Properties	1210 Integrity Drive
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	2,041
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	3,389
Improvements, Costs capitalized subsequent to acquisition	100,985
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,796
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	102,619
Total	106,415
Accumulated depreciation and amortization	$ (29)
907 Security Row
Real Estate and Accumulated Depreciation [Line Items]
Properties	907 Security Row
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	333
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	344
Improvements, Costs capitalized subsequent to acquisition	98,890
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,112
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	97,455
Total	99,567
Accumulated depreciation and amortization	$ (2,790)
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
Improvements, Costs capitalized subsequent to acquisition	13,778
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,067
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	22,934
Total	25,001
Accumulated depreciation and amortization	$ (15,103)
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
Improvements, Costs capitalized subsequent to acquisition	6,818
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,151
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	7,171
Total	8,322
Accumulated depreciation and amortization	$ (814)
1215 Integrity Drive
Real Estate and Accumulated Depreciation [Line Items]
Properties	1215 Integrity Drive
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	44,353
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,921
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	42,432
Total	44,353
Accumulated depreciation and amortization	$ (11,315)
1350 Duane & 3080 Raymond
Real Estate and Accumulated Depreciation [Line Items]
Properties	1350 Duane & 3080 Raymond
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	7,081
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	69,817
Improvements, Costs capitalized subsequent to acquisition	61
Carry costs, Costs capitalized subsequent to acquisition	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	$ (12,978)
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
Improvements, Costs capitalized subsequent to acquisition	450
Carry costs, Costs capitalized subsequent to acquisition	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	$ (5,737)
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
Improvements, Costs capitalized subsequent to acquisition	45
Carry costs, Costs capitalized subsequent to acquisition	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	$ (4,389)
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
Improvements, Costs capitalized subsequent to acquisition	92,086
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,418
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	163,563
Total	166,981
Accumulated depreciation and amortization	$ (28,851)
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
Improvements, Costs capitalized subsequent to acquisition	8,793
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	9,975
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	77,156
Total	87,131
Accumulated depreciation and amortization	$ (19,299)
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
Improvements, Costs capitalized subsequent to acquisition	31,509
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,465
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	216,857
Total	222,322
Accumulated depreciation and amortization	$ (53,084)
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
Improvements, Costs capitalized subsequent to acquisition	35,249
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	3,023
Buildings and improvements, Total costs	39,261
Total	42,284
Accumulated depreciation and amortization	$ (5,866)
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
Improvements, Costs capitalized subsequent to acquisition	38,002
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,274
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	44,569
Total	47,843
Accumulated depreciation and amortization	$ (19,201)
3105 Alfred Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	3105 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
Improvements, Costs capitalized subsequent to acquisition	58,227
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	6,801
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	61,684
Total	68,485
Accumulated depreciation and amortization	$ (22,043)
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
Improvements, Costs capitalized subsequent to acquisition	23,962
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	22,854
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	182,671
Total	205,525
Accumulated depreciation and amortization	$ (40,034)
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
Improvements, Costs capitalized subsequent to acquisition	9,644
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,884
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	126,505
Total	130,389
Accumulated depreciation and amortization	$ (24,909)
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
Improvements, Costs capitalized subsequent to acquisition	14,310
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	11,053
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	65,707
Total	76,760
Accumulated depreciation and amortization	$ (15,223)
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
Improvements, Costs capitalized subsequent to acquisition	203,628
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	7,335
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	442,080
Total	449,415
Accumulated depreciation and amortization	$ (88,460)
4030 Lafayette
Real Estate and Accumulated Depreciation [Line Items]
Properties	4030 Lafayette
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	2,492
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	16,912
Improvements, Costs capitalized subsequent to acquisition	3,871
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,492
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	20,783
Total	23,275
Accumulated depreciation and amortization	$ (4,646)
4040 Lafayette
Real Estate and Accumulated Depreciation [Line Items]
Properties	4040 Lafayette
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	1,246
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,267
Improvements, Costs capitalized subsequent to acquisition	24,510
Carry costs, Costs capitalized subsequent to acquisition	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	$ (2,762)
4050 Lafayette
Real Estate and Accumulated Depreciation [Line Items]
Properties	4050 Lafayette
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	1,246
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	4,371
Improvements, Costs capitalized subsequent to acquisition	35,110
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,246
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	39,481
Total	40,727
Accumulated depreciation and amortization	$ (16,862)
2805 Lafayette Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	2805 Lafayette Street
Metropolitan Area	Silicon Valley
Encumbrances	$ 0
Land, Initial costs	8,976
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	18,155
Improvements, Costs capitalized subsequent to acquisition	128,065
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	8,294
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	146,902
Total	155,196
Accumulated depreciation and amortization	$ (17,415)
29A International Business Park
Real Estate and Accumulated Depreciation [Line Items]
Properties	29A International Business Park
Metropolitan Area	Singapore
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	137,545
Improvements, Costs capitalized subsequent to acquisition	190,103
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	327,648
Total	327,648
Accumulated depreciation and amortization	$ (76,738)
43940 Digital Loudoun Plaza
Real Estate and Accumulated Depreciation [Line Items]
Properties	43940 Digital Loudoun Plaza
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	6,229
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	255,687
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	6,323
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	255,593
Total	261,916
Accumulated depreciation and amortization	$ (42,870)
44060 Digital Loudoun Plaza
Real Estate and Accumulated Depreciation [Line Items]
Properties	44060 Digital Loudoun Plaza
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,700
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	187,637
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,441
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	187,896
Total	191,337
Accumulated depreciation and amortization	$ (10,721)
44100 Digital Loudoun Plaza
Real Estate and Accumulated Depreciation [Line Items]
Properties	44100 Digital Loudoun Plaza
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,700
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	128,634
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,750
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	128,584
Total	132,334
Accumulated depreciation and amortization	$ (1,139)
43780 Digital Loudoun Plaza
Real Estate and Accumulated Depreciation [Line Items]
Properties	43780 Digital Loudoun Plaza
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	3,671
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	52,214
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,633
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	51,252
Total	55,885
Accumulated depreciation and amortization	$ (139)
1-11 Templar Road
Real Estate and Accumulated Depreciation [Line Items]
Properties	1-11 Templar Road
Metropolitan Area	Sydney
Encumbrances	$ 0
Land, Initial costs	6,937
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	62,024
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,550
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	64,411
Total	68,961
Accumulated depreciation and amortization	$ (9,346)
13-23 Templar Road
Real Estate and Accumulated Depreciation [Line Items]
Properties	13-23 Templar Road
Metropolitan Area	Sydney
Land, Initial costs	$ 4,236
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	426
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,424
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	1,238
Total	4,662
Accumulated depreciation and amortization	$ 0
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
Improvements, Costs capitalized subsequent to acquisition	90,541
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	6,145
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	104,446
Total	110,591
Accumulated depreciation and amortization	$ (12,647)
72 Radnor Drive
Real Estate and Accumulated Depreciation [Line Items]
Properties	72 Radnor Drive
Metropolitan Area	Melbourne
Encumbrances	$ 0
Land, Initial costs	2,568
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	53,962
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,805
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	54,725
Total	56,530
Accumulated depreciation and amortization	$ (5,163)
98 Radnor Drive
Real Estate and Accumulated Depreciation [Line Items]
Properties	98 Radnor Drive
Metropolitan Area	Melbourne
Encumbrances	$ 0
Land, Initial costs	1,899
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	36,164
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,375
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,688
Total	38,063
Accumulated depreciation and amortization	$ (10,242)
105 Cabot Street
Real Estate and Accumulated Depreciation [Line Items]
Properties	105 Cabot Street
Metropolitan Area	Boston
Encumbrances	$ 0
Land, Initial costs	2,386
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	58,844
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,427
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	58,803
Total	61,230
Accumulated depreciation and amortization	$ (5,502)
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
Improvements, Costs capitalized subsequent to acquisition	57,103
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,689
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	57,103
Total	58,792
Accumulated depreciation and amortization	$ (14,163)
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
Improvements, Costs capitalized subsequent to acquisition	1
Carry costs, Costs capitalized subsequent to acquisition	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	$ (3,253)
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
Improvements, Costs capitalized subsequent to acquisition	39,505
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,205
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	40,588
Total	45,793
Accumulated depreciation and amortization	$ (1,321)
1506 & 44874 Moran Road
Real Estate and Accumulated Depreciation [Line Items]
Properties	1506 & 44874 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
Improvements, Costs capitalized subsequent to acquisition	17,185
Carry costs, Costs capitalized subsequent to acquisition	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	$ (1,800)
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
Improvements, Costs capitalized subsequent to acquisition	3,086
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,837
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	56,637
Total	61,474
Accumulated depreciation and amortization	$ (9,862)
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
Improvements, Costs capitalized subsequent to acquisition	(771)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	19,828
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	55,962
Total	75,790
Accumulated depreciation and amortization	$ (10,532)
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
Improvements, Costs capitalized subsequent to acquisition	17,189
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	23,137
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	111,132
Total	134,269
Accumulated depreciation and amortization	$ (22,488)
9333 Grand Avenue
Real Estate and Accumulated Depreciation [Line Items]
Properties	9333 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
Improvements, Costs capitalized subsequent to acquisition	76,939
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,205
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	95,935
Total	97,140
Accumulated depreciation and amortization	$ (21,486)
9355 Grand Avenue
Real Estate and Accumulated Depreciation [Line Items]
Properties	9355 Grand Avenue
Metropolitan Area	Chicago
Encumbrances	$ 0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	224,912
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,518
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	222,394
Total	224,912
Accumulated depreciation and amortization	$ (7,330)
9377 Grand Avenue
Real Estate and Accumulated Depreciation [Line Items]
Properties	9377 Grand Avenue
Metropolitan Area	Chicago
Encumbrances	$ 0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	75,821
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,248
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	73,573
Total	75,821
Accumulated depreciation and amortization	$ (38)
8025 North Interstate 35
Real Estate and Accumulated Depreciation [Line Items]
Properties	8025 North Interstate 35
Metropolitan Area	Austin
Encumbrances	$ 0
Land, Initial costs	2,920
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	8,512
Improvements, Costs capitalized subsequent to acquisition	185
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,920
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	8,697
Total	11,617
Accumulated depreciation and amortization	$ (1,305)
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
Improvements, Costs capitalized subsequent to acquisition	83,041
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,614
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	83,041
Total	84,655
Accumulated depreciation and amortization	$ (10,903)
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
Improvements, Costs capitalized subsequent to acquisition	74,874
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,546
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	74,874
Total	76,420
Accumulated depreciation and amortization	$ (6,421)
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
Improvements, Costs capitalized subsequent to acquisition	1,902
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	10,075
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	64,632
Total	74,707
Accumulated depreciation and amortization	$ (7,910)
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
Improvements, Costs capitalized subsequent to acquisition	29,784
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	29,784
Total	29,784
Accumulated depreciation and amortization	$ (8,027)
Croydon
Real Estate and Accumulated Depreciation [Line Items]
Properties	Croydon
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	1,683
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	104,728
Improvements, Costs capitalized subsequent to acquisition	34,197
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,203
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	138,405
Total	140,608
Accumulated depreciation and amortization	$ (17,161)
Watford
Real Estate and Accumulated Depreciation [Line Items]
Properties	Watford
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	7,355
Buildings and improvements, Initial costs	219,273
Improvements, Costs capitalized subsequent to acquisition	(15,784)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	6,043
Buildings and improvements, Total costs	204,801
Total	210,844
Accumulated depreciation and amortization	$ (24,862)
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
Improvements, Costs capitalized subsequent to acquisition	(218,845)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	12,327
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	714,291
Total	726,618
Accumulated depreciation and amortization	$ (93,086)
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
Improvements, Costs capitalized subsequent to acquisition	2,059
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,352
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	82,699
Total	86,051
Accumulated depreciation and amortization	$ (11,645)
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
Improvements, Costs capitalized subsequent to acquisition	26,299
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	10,045
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	33,054
Total	43,099
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
Improvements, Costs capitalized subsequent to acquisition	(3,366)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	4,932
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,682
Total	7,614
Accumulated depreciation and amortization	$ (310)
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
Improvements, Costs capitalized subsequent to acquisition	(9,218)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	7,669
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	28,559
Total	36,228
Accumulated depreciation and amortization	$ (4,143)
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
Improvements, Costs capitalized subsequent to acquisition	(1,317)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,712
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,463
Total	5,175
Accumulated depreciation and amortization	$ (461)
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
Improvements, Costs capitalized subsequent to acquisition	(3,950)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	6,886
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	8,639
Total	15,525
Accumulated depreciation and amortization	$ (1,559)
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
Improvements, Costs capitalized subsequent to acquisition	(1)
Carry costs, Costs capitalized subsequent to acquisition	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	$ (825)
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
Improvements, Costs capitalized subsequent to acquisition	486
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	5,398
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,443
Total	22,841
Accumulated depreciation and amortization	$ (1,815)
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
Improvements, Costs capitalized subsequent to acquisition	88,306
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	6,014
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	90,363
Total	96,377
Accumulated depreciation and amortization	$ (4,305)
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
Improvements, Costs capitalized subsequent to acquisition	3,191
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	10,190
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	23,245
Total	33,435
Accumulated depreciation and amortization	$ (3,029)
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
Improvements, Costs capitalized subsequent to acquisition	101,915
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	12,044
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	101,708
Total	113,752
Accumulated depreciation and amortization	$ (3,890)
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
Improvements, Costs capitalized subsequent to acquisition	395
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	8,604
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	20,709
Total	29,313
Accumulated depreciation and amortization	$ (3,043)
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
Improvements, Costs capitalized subsequent to acquisition	8,138
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	591
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	11,402
Total	11,993
Accumulated depreciation and amortization	$ (1,183)
DePresident
Real Estate and Accumulated Depreciation [Line Items]
Properties	DePresident
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	6,737
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	30,369
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	7,030
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	30,076
Total	37,106
Accumulated depreciation and amortization	$ 0
Digital Osaka
Real Estate and Accumulated Depreciation [Line Items]
Properties	Digital Osaka
Metropolitan Area	Osaka
Encumbrances	$ 0
Land, Initial costs	9,649
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	43,689
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	9,043
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	44,295
Total	53,338
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
Improvements, Costs capitalized subsequent to acquisition	1,227
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	18,502
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	7,030
Total	25,532
Accumulated depreciation and amortization	$ (190)
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
Improvements, Costs capitalized subsequent to acquisition	32
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,630
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2
Total	1,632
Accumulated depreciation and amortization	$ 0
3 Loyang Way
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
Improvements, Costs capitalized subsequent to acquisition	110,303
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	110,303
Total	110,303
Accumulated depreciation and amortization	$ (320)
Digital Loudoun III
Real Estate and Accumulated Depreciation [Line Items]
Properties	Digital Loudoun III
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	43,000
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	26,278
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	51,673
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	17,605
Total	69,278
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
Improvements, Costs capitalized subsequent to acquisition	7,884
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	8,266
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,161
Total	13,427
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
Improvements, Costs capitalized subsequent to acquisition	7,329
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	1,700
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	218,726
Total	220,426
Accumulated depreciation and amortization	$ (10,882)
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
Improvements, Costs capitalized subsequent to acquisition	5,072
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	120,511
Total	120,511
Accumulated depreciation and amortization	$ (8,637)
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
Improvements, Costs capitalized subsequent to acquisition	3,400
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	3,600
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	88,838
Total	92,438
Accumulated depreciation and amortization	$ (3,985)
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
Improvements, Costs capitalized subsequent to acquisition	4,249
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	36,529
Total	36,529
Accumulated depreciation and amortization	$ (4,064)
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
Improvements, Costs capitalized subsequent to acquisition	1,368
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	32,348
Total	32,348
Accumulated depreciation and amortization	$ (2,765)
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
Improvements, Costs capitalized subsequent to acquisition	1,387
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	13,075
Total	13,075
Accumulated depreciation and amortization	$ (2,074)
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
Improvements, Costs capitalized subsequent to acquisition	1,425
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,448
Total	6,448
Accumulated depreciation and amortization	$ (841)
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
Improvements, Costs capitalized subsequent to acquisition	2,648
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,924
Total	6,924
Accumulated depreciation and amortization	$ (550)
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
Improvements, Costs capitalized subsequent to acquisition	5,433
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	47,887
Total	47,887
Accumulated depreciation and amortization	$ (6,506)
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
Improvements, Costs capitalized subsequent to acquisition	2,180
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	16,113
Total	16,113
Accumulated depreciation and amortization	$ (1,749)
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
Improvements, Costs capitalized subsequent to acquisition	1,160
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	7,879
Total	7,879
Accumulated depreciation and amortization	$ (958)
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
Improvements, Costs capitalized subsequent to acquisition	1,725
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	6,916
Total	6,916
Accumulated depreciation and amortization	$ (853)
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
Improvements, Costs capitalized subsequent to acquisition	498
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	4,187
Total	4,187
Accumulated depreciation and amortization	$ (506)
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
Improvements, Costs capitalized subsequent to acquisition	835
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,966
Total	3,966
Accumulated depreciation and amortization	$ (364)
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
Improvements, Costs capitalized subsequent to acquisition	765
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,613
Total	3,613
Accumulated depreciation and amortization	$ (383)
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
Improvements, Costs capitalized subsequent to acquisition	649
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	2,491
Total	2,491
Accumulated depreciation and amortization	$ (353)
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
Improvements, Costs capitalized subsequent to acquisition	1,682
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	3,497
Total	3,497
Accumulated depreciation and amortization	$ (293)
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
Improvements, Costs capitalized subsequent to acquisition	40
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	516
Total	516
Accumulated depreciation and amortization	$ (75)
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
Improvements, Costs capitalized subsequent to acquisition	109
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	461
Total	461
Accumulated depreciation and amortization	$ (61)
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
Improvements, Costs capitalized subsequent to acquisition	25
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	222
Total	222
Accumulated depreciation and amortization	$ (57)
Science Park
Real Estate and Accumulated Depreciation [Line Items]
Properties	Science Park
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	665
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	75,095
Improvements, Costs capitalized subsequent to acquisition	15,671
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	631
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	90,800
Total	91,431
Accumulated depreciation and amortization	$ (903)
Sovereign House
Real Estate and Accumulated Depreciation [Line Items]
Properties	Sovereign House
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	7,943
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	44,114
Improvements, Costs capitalized subsequent to acquisition	(2,095)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	7,527
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	42,435
Total	49,962
Accumulated depreciation and amortization	$ (2,188)
Amstel Business Park
Real Estate and Accumulated Depreciation [Line Items]
Properties	Amstel Business Park
Metropolitan Area	Amsterdam
Encumbrances	$ 0
Land, Initial costs	2,991
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	58,138
Improvements, Costs capitalized subsequent to acquisition	2,184
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	2,840
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	60,473
Total	63,313
Accumulated depreciation and amortization	$ (2,587)
Olivers Yard
Real Estate and Accumulated Depreciation [Line Items]
Properties	Olivers Yard
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	7,943
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	34,744
Improvements, Costs capitalized subsequent to acquisition	(2,099)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	7,527
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	33,061
Total	40,588
Accumulated depreciation and amortization	$ (1,782)
Bonnington House
Real Estate and Accumulated Depreciation [Line Items]
Properties	Bonnington House
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	14,127
Improvements, Costs capitalized subsequent to acquisition	(252)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	13,875
Total	13,875
Accumulated depreciation and amortization	$ (1,094)
West Drayton
Real Estate and Accumulated Depreciation [Line Items]
Properties	West Drayton
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	10,135
Improvements, Costs capitalized subsequent to acquisition	(330)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	9,805
Total	9,805
Accumulated depreciation and amortization	$ (832)
Lyonerstrasse
Real Estate and Accumulated Depreciation [Line Items]
Properties	Lyonerstrasse
Metropolitan Area	Frankfurt
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	8,407
Improvements, Costs capitalized subsequent to acquisition	(393)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	8,014
Total	8,014
Accumulated depreciation and amortization	$ (586)
Meridian Gate
Real Estate and Accumulated Depreciation [Line Items]
Properties	Meridian Gate
Metropolitan Area	London
Encumbrances	$ 0
Land, Initial costs	0
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	5,893
Improvements, Costs capitalized subsequent to acquisition	(255)
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	5,638
Total	5,638
Accumulated depreciation and amortization	$ (445)
NE Corner of Campbell Road and Ferris Road
Real Estate and Accumulated Depreciation [Line Items]
Properties	NE Corner of Campbell Road and Ferris Road
Metropolitan Area	Dallas
Encumbrances	$ 0
Land, Initial costs	16,542
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	230
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	16,772
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	0
Total	16,772
Accumulated depreciation and amortization	$ 0
9401 West Grand Avenue
Real Estate and Accumulated Depreciation [Line Items]
Properties	9401 West Grand Avenue
Metropolitan Area	Chicago
Encumbrances	$ 0
Land, Initial costs	12,500
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	973
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	13,430
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	43
Total	13,473
Accumulated depreciation and amortization	$ 0
Broad Run Technology Park
Real Estate and Accumulated Depreciation [Line Items]
Properties	Broad Run Technology Park
Metropolitan Area	N. Virginia
Encumbrances	$ 0
Land, Initial costs	18,019
Acquired ground lease, Initial costs	0
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	5,422
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	23,314
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	127
Total	23,441
Accumulated depreciation and amortization	$ 0
Other
Real Estate and Accumulated Depreciation [Line Items]
Properties	Other
Encumbrances	$ 0
Land, Initial costs	8,298
Buildings and improvements, Initial costs	0
Improvements, Costs capitalized subsequent to acquisition	94,343
Carry costs, Costs capitalized subsequent to acquisition	0
Land, Total costs	0
Acquired ground lease, Total costs	0
Buildings and improvements, Total costs	102,641
Total	102,641
Accumulated depreciation and amortization	$ (14,485)

Schedule III Properties And 117

Schedule III Properties And Accumulated Depreciation (Narrative) (Details) $ in Billions	Dec. 31, 2016USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Aggregate gross cost of properties for federal income tax purposes	$ 13.4

Schedule III Properties And 118

Schedule III Properties And Accumulated Depreciation (Summary Of Historical Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, beginning of year	$ 10,915,373	$ 9,982,612	$ 9,879,578
Additions during period (acquisitions and improvements)	760,051	1,133,263	560,307
Deductions during period (dispositions, impairments and assets held for sale)	(116,955)	(200,502)	(457,273)
Balance, end of year	$ 11,558,469	$ 10,915,373	$ 9,982,612

Schedule III Properties And 119

Schedule III Properties And Accumulated Depreciation (Summary Of Accumulated Depreciation And Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, beginning of year	$ 2,251,268	$ 1,874,054	$ 1,565,996
Additions during period (depreciation and amortization expense)	461,506	429,057	413,652
Deductions during period (dispositions and assets held for sale)	(44,265)	(51,843)	(105,594)
Balance, end of year	$ 2,668,509	$ 2,251,268	$ 1,874,054