Digital Realty Trust 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 03, 2014
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Registrant Name	'Digital Realty Trust, Inc.	'
Entity Central Index Key	'0001297996	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	135,512,464
Digital Realty Trust, L.P.	'	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'Digital Realty Trust, L.P.	'
Entity Central Index Key	'0001494877	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Properties:	'	'
Land	$694,237	$693,791
Acquired ground leases	14,030	14,618
Buildings and improvements	9,032,432	8,680,677
Tenant improvements	496,018	490,492
Total investments in properties	10,236,717	9,879,578
Accumulated depreciation and amortization	-1,840,379	-1,565,996
Net investments in properties	8,396,338	8,313,582
Investment in unconsolidated joint ventures	94,497	70,504
Net investments in real estate	8,490,835	8,384,086
Cash and cash equivalents	36,528	56,808
Accounts and other receivables, net of allowance for doubtful accounts of $7,652 and $5,576 as of September 30, 2014 and December 31, 2013, respectively	140,463	122,248
Deferred rent	442,358	393,504
Acquired above-market leases, net	42,477	52,264
Acquired in-place lease value and deferred leasing costs, net	461,243	489,456
Deferred financing costs, net	33,761	36,475
Restricted cash	13,986	40,362
Other assets	60,356	51,627
Total assets	9,722,007	9,626,830
LIABILITIES AND EQUITY/CAPITAL	'	'
Unsecured senior notes, net of discount	2,835,478	2,364,232
Exchangeable senior debentures	0	266,400
Mortgage loans, net of premiums	417,042	585,608
Accounts payable and other accrued liabilities	648,314	662,687
Accrued dividends and distributions	0	102,509
Acquired below-market leases, net	110,708	130,269
Security deposits and prepaid rents	119,696	122,961
Total liabilities	5,618,447	5,980,318
Commitments and contingencies	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Common Stock: $0.01 par value, 215,000,000 shares authorized, 135,503,184 and 128,455,350 shares issued and outstanding as of September 30, 2014 and December 31, 2013, respectively	1,348	1,279
Additional paid-in capital	3,964,876	3,688,937
Accumulated dividends in excess of earnings	-931,777	-785,222
Accumulated other comprehensive (loss) income	-20,470	10,691
Total stockholders’ equity	4,062,108	3,610,516
Noncontrolling Interests:	'	'
Noncontrolling interests in operating partnership	34,632	29,027
Noncontrolling interests in consolidated joint ventures	6,820	6,969
Total noncontrolling interests	41,452	35,996
Total equity	4,103,560	3,646,512
Total liabilities and equity/capital	9,722,007	9,626,830
Digital Realty Trust, L.P.	'	'
Properties:	'	'
Land	694,237	693,791
Acquired ground leases	14,030	14,618
Buildings and improvements	9,032,432	8,680,677
Tenant improvements	496,018	490,492
Total investments in properties	10,236,717	9,879,578
Accumulated depreciation and amortization	-1,840,379	-1,565,996
Net investments in properties	8,396,338	8,313,582
Investment in unconsolidated joint ventures	94,497	70,504
Net investments in real estate	8,490,835	8,384,086
Cash and cash equivalents	36,528	56,808
Accounts and other receivables, net of allowance for doubtful accounts of $7,652 and $5,576 as of September 30, 2014 and December 31, 2013, respectively	140,463	122,248
Deferred rent	442,358	393,504
Acquired above-market leases, net	42,477	52,264
Acquired in-place lease value and deferred leasing costs, net	461,243	489,456
Deferred financing costs, net	33,761	36,475
Restricted cash	13,986	40,362
Other assets	60,356	51,627
Total assets	9,722,007	9,626,830
LIABILITIES AND EQUITY/CAPITAL	'	'
Unsecured senior notes, net of discount	2,835,478	2,364,232
Exchangeable senior debentures	0	266,400
Mortgage loans, net of premiums	417,042	585,608
Accounts payable and other accrued liabilities	648,314	662,687
Accrued dividends and distributions	0	102,509
Acquired below-market leases, net	110,708	130,269
Security deposits and prepaid rents	119,696	122,961
Total liabilities	5,618,447	5,980,318
Commitments and contingencies	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
135,503,184 and 128,455,350 units issued and outstanding as of September 30, 2014 and December 31, 2013, respectively	3,034,447	2,904,994
Limited partners, 1,478,814 and 1,491,814 common units, 1,248,003 and 1,077,838 profits interest units and 397,369 and 397,369 class C units outstanding as of September 30, 2014 and December 31, 2013, respectively	37,515	31,261
Accumulated other comprehensive (loss) income	-23,353	8,457
Total partners’ capital	4,096,740	3,639,543
Noncontrolling Interests:	'	'
Noncontrolling interests in consolidated joint ventures	6,820	6,969
Total capital	4,103,560	3,646,512
Total liabilities and equity/capital	9,722,007	9,626,830
Series E Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	277,172	277,172
Series E Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	277,172	277,172
Series F Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	176,191	176,191
Series F Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	176,191	176,191
Series G Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	241,468	241,468
Series G Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	241,468	241,468
Series H Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	'	0
Series H Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'	'
Preferred Stock: $0.01 par value per share, 70,000,000 shares authorized:	'	'
Preferred Stock	353,300	0
Global revolving credit facility	'	'
LIABILITIES AND EQUITY/CAPITAL	'	'
Line of credit	485,023	724,668
Global revolving credit facility | Digital Realty Trust, L.P.	'	'
LIABILITIES AND EQUITY/CAPITAL	'	'
Line of credit	485,023	724,668
Unsecured term loan	'	'
LIABILITIES AND EQUITY/CAPITAL	'	'
Line of credit	'	1,020,984
Unsecured term loan | Digital Realty Trust, L.P.	'	'
LIABILITIES AND EQUITY/CAPITAL	'	'
Line of credit	$1,002,186	$1,020,984

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Accounts and other receivables, net of allowance for doubtful accounts of $7,652 and $5,576 as of September 30, 2014 and December 31, 2013, respectively	$7,652,000	$5,576,000
Preferred Stock, par value	$0.01	$0.01
Preferred Stock, authorized	70,000,000	70,000,000
Common Stock, par value	$0.01	$0.01
Common Stock, authorized	215,000,000	215,000,000
Common Stock, shares issued	135,503,184	128,455,350
Common Stock, shares outstanding	135,503,184	128,455,350
Series E Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference value	287,500	287,500
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Stock, issued	11,500,000	11,500,000
Preferred Stock, outstanding	11,500,000	11,500,000
Series F Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	6.63%	6.63%
Preferred Stock, liquidation preference value	182,500	182,500
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Stock, issued	7,300,000	7,300,000
Preferred Stock, outstanding	7,300,000	7,300,000
Series G Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	5.88%	5.88%
Preferred Stock, liquidation preference value	250,000	250,000
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Stock, issued	10,000,000	10,000,000
Preferred Stock, outstanding	10,000,000	10,000,000
Series H Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	7.38%	7.38%
Preferred Stock, liquidation preference value	365,000	0
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Stock, issued	14,600,000	0
Preferred Stock, outstanding	14,600,000	0
Digital Realty Trust, L.P.	'	'
Accounts and other receivables, net of allowance for doubtful accounts of $7,652 and $5,576 as of September 30, 2014 and December 31, 2013, respectively	7,652,000	5,576,000
Common Units, issued	135,503,184	128,455,350
Common Units, outstanding	135,503,184	128,455,350
Limited Partners, common units	1,478,814	1,491,814
Limited Partners, profits interest units	1,248,003	1,077,838
Limited Partners, Class C units outstanding	397,369	397,369
Digital Realty Trust, L.P. | Series E Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference value	287,500	287,500
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Units, issued	11,500,000	11,500,000
Preferred Units, outstanding	11,500,000	11,500,000
Digital Realty Trust, L.P. | Series F Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	6.63%	6.63%
Preferred Stock, liquidation preference value	182,500	182,500
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Units, issued	7,300,000	7,300,000
Preferred Units, outstanding	7,300,000	7,300,000
Digital Realty Trust, L.P. | Series G Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	5.88%	5.88%
Preferred Stock, liquidation preference value	250,000	250,000
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Units, issued	10,000,000	10,000,000
Preferred Units, outstanding	10,000,000	10,000,000
Digital Realty Trust, L.P. | Series H Cumulative Redeemable Preferred Stock/Units	'	'
Preferred Stock, dividend rate	7.38%	7.38%
Preferred Stock, liquidation preference value	$365,000	$0
Preferred Stock, liquidation preference per share/unit	$25	$25
Preferred Units, issued	14,600,000	0
Preferred Units, outstanding	14,600,000	0

Condensed_Consolidated_Income_

Condensed Consolidated Income Statements (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Revenues:	'	'	'	'
Rental	$317,064,000	$290,712,000	$936,270,000	$858,064,000
Tenant reimbursements	92,209,000	88,059,000	261,517,000	240,657,000
Fee income	2,748,000	671,000	5,397,000	2,205,000
Other	165,000	14,000	1,038,000	402,000
Total operating revenues	412,186,000	379,456,000	1,204,222,000	1,101,328,000
Operating Expenses:	'	'	'	'
Rental property operating and maintenance	130,894,000	129,234,000	375,586,000	341,420,000
Property taxes	25,765,000	26,074,000	68,485,000	66,490,000
Insurance	2,145,000	2,144,000	6,463,000	6,587,000
Construction management	60,000	51,000	345,000	729,000
Change in fair value of contingent consideration	-1,465,000	-943,000	-4,102,000	-13,000
Depreciation and amortization	137,474,000	121,198,000	405,186,000	348,688,000
General and administrative	20,709,000	16,275,000	71,708,000	50,117,000
Transactions	144,000	243,000	980,000	3,497,000
Impairment of investments in real estate	12,500,000	0	12,500,000	0
Other	1,588,000	3,000	2,239,000	56,000
Total operating expenses	329,814,000	294,279,000	939,390,000	817,571,000
Operating income	82,372,000	85,177,000	264,832,000	283,757,000
Other Income (Expenses):	'	'	'	'
Equity in earnings of unconsolidated joint ventures	3,455,000	2,174,000	9,513,000	6,839,000
Gain on insurance settlement	0	0	0	5,597,000
Gain on sale of property	0	0	15,945,000	0
Gain on contribution of properties to unconsolidated joint ventures	93,498,000	115,054,000	95,404,000	115,054,000
Interest and other income (expense)	378,000	-127,000	2,022,000	-92,000
Interest expense	-48,169,000	-47,742,000	-144,689,000	-143,403,000
Tax expense	-1,178,000	-352,000	-4,037,000	-1,765,000
Loss from early extinguishment of debt	-195,000	-704,000	-780,000	-1,205,000
Net income	130,161,000	153,480,000	238,210,000	264,782,000
Net income attributable to noncontrolling interests	-2,392,000	-2,882,000	-4,190,000	-4,997,000
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	127,769,000	150,598,000	234,020,000	259,785,000
Preferred stock dividends	-18,455,000	-11,726,000	-49,010,000	-31,179,000
Net income available to common stockholders	109,314,000	138,872,000	185,010,000	228,606,000
Net income per share/unit available to common stockholders/unitholders:	'	'	'	'
Basic	$0.81	$1.08	$1.39	$1.79
Diluted	$0.80	$1.06	$1.39	$1.79
Weighted average common shares/units outstanding:	'	'	'	'
Basic	135,492,618	128,427,444	132,635,894	127,771,419
Diluted	135,946,533	135,301,765	132,852,966	127,955,769
Digital Realty Trust, L.P.	'	'	'	'
Operating Revenues:	'	'	'	'
Rental	317,064,000	290,712,000	936,270,000	858,064,000
Tenant reimbursements	92,209,000	88,059,000	261,517,000	240,657,000
Fee income	2,748,000	671,000	5,397,000	2,205,000
Other	165,000	14,000	1,038,000	402,000
Total operating revenues	412,186,000	379,456,000	1,204,222,000	1,101,328,000
Operating Expenses:	'	'	'	'
Rental property operating and maintenance	130,894,000	129,234,000	375,586,000	341,420,000
Property taxes	25,765,000	26,074,000	68,485,000	66,490,000
Insurance	2,145,000	2,144,000	6,463,000	6,587,000
Construction management	60,000	51,000	345,000	729,000
Change in fair value of contingent consideration	-1,465,000	-943,000	-4,102,000	-13,000
Depreciation and amortization	137,474,000	121,198,000	405,186,000	348,688,000
General and administrative	20,709,000	16,275,000	71,708,000	50,117,000
Transactions	144,000	243,000	980,000	3,497,000
Impairment of investments in real estate	12,500,000	0	12,500,000	0
Other	1,588,000	3,000	2,239,000	56,000
Total operating expenses	329,814,000	294,279,000	939,390,000	817,571,000
Operating income	82,372,000	85,177,000	264,832,000	283,757,000
Other Income (Expenses):	'	'	'	'
Equity in earnings of unconsolidated joint ventures	3,455,000	2,174,000	9,513,000	6,839,000
Gain on insurance settlement	0	0	0	5,597,000
Gain on sale of property	0	0	15,945,000	0
Gain on contribution of properties to unconsolidated joint ventures	93,498,000	115,054,000	95,404,000	115,054,000
Interest and other income (expense)	378,000	-127,000	2,022,000	-92,000
Interest expense	-48,169,000	-47,742,000	-144,689,000	-143,403,000
Tax expense	-1,178,000	-352,000	-4,037,000	-1,765,000
Loss from early extinguishment of debt	-195,000	-704,000	-780,000	-1,205,000
Net income	130,161,000	153,480,000	238,210,000	264,782,000
Net income attributable to noncontrolling interests	-120,000	-125,000	-352,000	-480,000
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	130,041,000	153,355,000	237,858,000	264,302,000
Preferred stock dividends	-18,455,000	-11,726,000	-49,010,000	-31,179,000
Net income available to common stockholders	$111,586,000	$141,629,000	$188,848,000	$233,123,000
Net income per share/unit available to common stockholders/unitholders:	'	'	'	'
Basic	$0.81	$1.08	$1.39	$1.79
Diluted	$0.80	$1.06	$1.39	$1.79
Weighted average common shares/units outstanding:	'	'	'	'
Basic	138,308,130	130,977,193	135,381,624	130,287,383
Diluted	138,762,045	137,851,514	135,598,696	130,471,733

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$130,161	$153,480	$238,210	$264,782
Other comprehensive income:	'	'	'	'
Foreign currency translation adjustments	-39,470	56,565	-30,730	-6,190
Increase (decrease) in fair value of interest rate swaps	2,435	-3,324	-3,647	3,175
Reclassification to interest expense from interest rate swaps	867	1,508	2,567	4,949
Comprehensive income	93,993	208,229	206,400	266,716
Comprehensive income attributable to noncontrolling interests	-1,656	-3,948	-3,541	-5,067
Comprehensive income attributable to Digital Realty Trust, Inc.	92,337	204,281	202,859	261,649
Digital Realty Trust, L.P.	'	'	'	'
Net income	130,161	153,480	238,210	264,782
Other comprehensive income:	'	'	'	'
Foreign currency translation adjustments	-39,470	56,565	-30,730	-6,190
Increase (decrease) in fair value of interest rate swaps	2,435	-3,324	-3,647	3,175
Reclassification to interest expense from interest rate swaps	867	1,508	2,567	4,949
Comprehensive income	$93,993	$208,229	$206,400	$266,716

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Equity (USD $)	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Dividends In Excess Of Earnings	Accumulated Other Comprehensive Income, Net	Total Stockholders' Equity	Noncontrolling Interests In Operating Partnership	Noncontrolling Interests In Consolidated Joint Ventures	Total Noncontrolling Interests
In Thousands, except Share data
Balance at Dec. 31, 2013	$3,646,512	$694,831	$1,279	$3,688,937	($785,222)	$10,691	$3,610,516	$29,027	$6,969	$35,996
Shares, Outstanding, Beginning Balance at Dec. 31, 2013	'	'	128,455,350	'	'	'	'	'	'	'
Conversion of units to common stock	'	'	'	229	'	'	229	-229	'	-229
Conversion of units to common stock (shares)	'	'	17,941	'	'	'	'	'	'	'
Issuance of unvested restricted stock, net of forfeitures (shares)	'	'	143,847	'	'	'	'	'	'	'
Common stock offering costs	-221	'	'	-221	'	'	-221	'	'	'
Exercise of stock options	237	'	'	237	'	'	237	'	'	'
Exercise of stock options (shares)	16,134	'	16,134	'	'	'	'	'	'	'
Issuance of common stock in exchange for debentures	266,400	'	69	266,331	'	'	266,400	'	'	'
Issuance of common stock in exchange for debentures (shares/units)	'	'	6,869,912	'	'	'	'	'	'	'
Issuance of series H preferred stock, net of offering costs	353,300	353,300	'	'	'	'	353,300	'	'	'
Amortization of unearned compensation on share-based awards	19,669	'	'	19,669	'	'	19,669	'	'	'
Reclassification of vested share based awards	'	'	'	-10,306	'	'	-10,306	10,306	'	10,306
Dividends declared on preferred stock	-49,010	'	'	'	-49,010	'	-49,010	'	'	'
Dividends and distributions on common stock and common and incentive units	-339,226	'	'	'	-331,565	'	-331,565	-7,661	'	-7,661
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	-501	'	'	'	'	'	'	'	-501	-501
Net income	238,210	'	'	'	234,020	'	234,020	3,838	352	4,190
Other comprehensive income - foreign currency translation adjustments	-30,730	'	'	'	'	-30,104	-30,104	-626	'	-626
Other comprehensive loss - fair value of interest rate swaps	-3,647	'	'	'	'	-3,572	-3,572	-75	'	-75
Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense	2,567	'	'	'	'	2,515	2,515	52	'	52
Balance at Sep. 30, 2014	$4,103,560	$1,048,131	$1,348	$3,964,876	($931,777)	($20,470)	$4,062,108	$34,632	$6,820	$41,452
Shares, Outstanding, Ending Balance at Sep. 30, 2014	'	'	135,503,184	'	'	'	'	'	'	'

Consolidated_Statements_Of_Cap

Consolidated Statements Of Capital (USD $)	3 Months Ended	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Balance (units)	'	128,455,350
Conversion of limited partner common units to general partner common units	'	($229)
Issuance of common stock in exchange for debentures	'	266,400
Net proceeds from issuance of series H preferred units	'	353,300
Amortization of unearned compensation on share-based awards	'	19,669
Net income	130,161	238,210
Other comprehensive income - foreign currency translation adjustments	-39,470	-30,730
Other comprehensive loss - fair value of interest rate swaps	2,435	-3,647
Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense	867	2,567
Balance (units)	135,503,184	135,503,184
Digital Realty Trust, L.P.	'	'
Balance	'	3,646,512
Common unit offering costs	'	-221
Issuance of common units in connection with the exercise of stock options	'	237
Issuance of common stock in exchange for debentures	'	266,400
Net proceeds from issuance of series H preferred units	'	353,300
Amortization of unearned compensation on share-based awards	'	19,669
Distributions	'	-388,236
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	'	-501
Net income	130,161	238,210
Other comprehensive income - foreign currency translation adjustments	-39,470	-30,730
Other comprehensive loss - fair value of interest rate swaps	2,435	-3,647
Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense	867	2,567
Balance	4,103,560	4,103,560
Accumulated Other Comprehensive Income, Net | Digital Realty Trust, L.P.	'	'
Balance	'	8,457
Other comprehensive income - foreign currency translation adjustments	'	-30,730
Other comprehensive loss - fair value of interest rate swaps	'	-3,647
Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense	'	2,567
Balance	-23,353	-23,353
Noncontrolling Interests In Consolidated Joint Ventures | Digital Realty Trust, L.P.	'	'
Balance	'	6,969
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions	'	-501
Net income	'	352
Balance	6,820	6,820
General Partner [Member] | Preferred Units [Member] | Digital Realty Trust, L.P.	'	'
Balance	'	694,831
Balance (units)	'	28,800,000
Net proceeds from issuance of series H preferred units	'	353,300
Net proceeds from issuance of series H preferred units (units)	'	14,600,000
Distributions	'	-49,010
Net income	'	49,010
Balance	1,048,131	1,048,131
Balance (units)	43,400,000	43,400,000
General Partner [Member] | Common Units | Digital Realty Trust, L.P.	'	'
Balance	'	2,904,994
Balance (units)	'	128,455,350
Conversion of limited partner common units to general partner common units	'	-229
Conversion of limited partner common units to general partner common units (units)	'	-17,941
Issuance of unvested restricted common units, net of forfeitures (units)	'	143,847
Common unit offering costs	'	-221
Issuance of common units in connection with the exercise of stock options	'	237
Issuance of common units in connection with the exercise of stock options (units)	'	16,134
Issuance of common stock in exchange for debentures	'	266,400
Issuance of common stock in exchange for debentures (shares/units)	'	6,869,912
Amortization of unearned compensation on share-based awards	'	19,669
Reclassification of vested share-based awards	'	-10,306
Distributions	'	-331,565
Net income	'	185,010
Balance	3,034,447	3,034,447
Balance (units)	135,503,184	135,503,184
Limited Partner [Member] | Common Units | Digital Realty Trust, L.P.	'	'
Balance	'	31,261
Balance (units)	'	2,967,021
Conversion of limited partner common units to general partner common units	'	229
Conversion of limited partner common units to general partner common units (units)	'	-17,941
Issuance of common units, net of forfeitures (units)	'	175,106
Reclassification of vested share-based awards	'	10,306
Distributions	'	-7,661
Net income	'	3,838
Balance	$37,515	$37,515
Balance (units)	3,124,186	3,124,186

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$238,210,000	$264,782,000
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Gain on sale of property	-15,945,000	0
Gain on contribution of investment properties to unconsolidated joint ventures	-95,404,000	-115,054,000
Gain on insurance settlement	0	-5,597,000
Impairment of investments in real estate	12,500,000	0
Equity in earnings of unconsolidated joint ventures	-9,513,000	-6,839,000
Change in fair value of contingent consideration	-4,102,000	-13,000
Distributions from unconsolidated joint ventures	6,032,000	27,675,000
Write-off of net assets due to early lease terminations	2,239,000	56,000
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	340,645,000	291,707,000
Amortization of share-based unearned compensation	15,489,000	9,344,000
Allowance for doubtful accounts	2,076,000	1,660,000
Amortization of deferred financing costs	6,762,000	7,733,000
Loss on early extinguishment of debt	780,000	1,205,000
Amortization of debt discount/premium	1,352,000	530,000
Amortization of acquired in-place lease value and deferred leasing costs	64,541,000	56,981,000
Amortization of acquired above-market leases and acquired below-market leases	-7,710,000	-8,831,000
Changes in assets and liabilities:	'	'
Restricted cash	11,060,000	2,487,000
Accounts and other receivables	-16,377,000	-11,601,000
Deferred rent	-58,874,000	-60,802,000
Deferred leasing costs	-15,178,000	-16,604,000
Other assets	-12,895,000	-9,355,000
Accounts payable and other accrued liabilities	3,668,000	13,304,000
Security deposits and prepaid rents	3,211,000	11,312,000
Net cash provided by operating activities	472,567,000	454,080,000
Cash flows from investing activities:	'	'
Acquisitions of real estate	-24,305,000	-154,801,000
Proceeds from sale of property, net	37,945,000	0
Proceeds from contribution of investment properties to unconsolidated joint ventures	178,933,000	328,569,000
Investment in unconsolidated joint ventures	-20,627,000	-7,297,000
Investment in equity securities	-2,000	-17,100,000
Deposits paid for acquisitions of real estate	0	-2,250,000
Receipt of value added tax refund	8,457,000	8,326,000
Refundable value added tax paid	-13,882,000	-11,805,000
Change in restricted cash	15,237,000	-1,292,000
Improvements to and advances for investments in real estate	-644,637,000	-882,346,000
Improvement advances to tenants	-15,505,000	-5,108,000
Collection of advances from tenants for improvements	13,500,000	3,978,000
Proceeds from insurance settlement	0	8,625,000
Net cash used in investing activities	-464,886,000	-732,501,000
Cash flows from financing activities:	'	'
Borrowings on revolving credit facility	952,590,000	1,292,146,000
Repayments on revolving credit facility	-1,182,341,000	-1,497,317,000
Principal payments on mortgage loans	-139,974,000	-109,661,000
Earnout payment related to the acquisition of the Sentrum Portfolio	-11,011,000	-25,783,000
Change in restricted cash	42,000	498,000
Payment of loan fees and costs	-5,209,000	-17,441,000
Capital (distributions paid to) contributions received from noncontrolling interests in consolidated joint ventures, net	-501,000	399,000
Gross proceeds from the issuance of preferred stock	365,000,000	250,000,000
Common stock offering costs paid	-221,000	-553,000
Preferred stock offering costs paid	-11,700,000	-8,489,000
Proceeds from exercise of stock options	237,000	230,000
Payment of dividends to preferred stockholders/unitholders	-49,010,000	-31,179,000
Payment of dividends/distributions to common stockholders and distributions to noncontrolling interests in operating partnership	-441,735,000	-400,953,000
Net cash (used in) provided by financing activities	-27,961,000	277,258,000
Net increase (decrease) in cash and cash equivalents	-20,280,000	-1,163,000
Cash and cash equivalents at beginning of period	56,808,000	56,281,000
Cash and cash equivalents at end of period	36,528,000	55,118,000
Supplemental disclosure of cash flow information:	'	'
Cash paid for interest, including amounts capitalized	165,818,000	159,746,000
Cash paid for income taxes	3,012,000	1,947,000
Supplementary disclosure of noncash investing and financing activities:	'	'
Change in net assets related to foreign currency translation adjustments	-30,104,000	-6,190,000
(Decrease) increase in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	-3,572,000	3,175,000
Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock	229,000	452,000
Preferred stock/units converted to shares of common stock/units	0	119,348,000
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	199,916,000	224,902,000
Additional accrual of contingent purchase price for investments in real estate	0	6,214,000
Accrual for potential earnout contingency	12,816,000	0
Issuance of common stock/units associated with exchange of exchangeable senior debentures	261,166,000	'
Allocation of purchase price of real estate/investment in partnership to:	'	'
Investments in real estate	24,305,000	143,033,000
Acquired above-market leases	0	203,000
Acquired below-market leases	0	-4,136,000
Acquired in-place lease value and deferred leasing costs	0	15,701,000
Cash paid for acquisition of real estate	24,305,000	154,801,000
4.25% Notes Due 2025	'	'
Cash flows from financing activities:	'	'
Borrowings on unsecured senior notes	0	630,026,000
4.75% Notes Due 2023	'	'
Cash flows from financing activities:	'	'
Borrowings on unsecured senior notes	495,872,000	0
Digital Realty Trust, L.P.	'	'
Cash flows from operating activities:	'	'
Net income	238,210,000	264,782,000
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Gain on sale of property	-15,945,000	0
Gain on contribution of investment properties to unconsolidated joint ventures	-95,404,000	-115,054,000
Gain on insurance settlement	0	-5,597,000
Impairment of investments in real estate	12,500,000	0
Equity in earnings of unconsolidated joint ventures	-9,513,000	-6,839,000
Change in fair value of contingent consideration	-4,102,000	-13,000
Distributions from unconsolidated joint ventures	6,032,000	27,675,000
Write-off of net assets due to early lease terminations	2,239,000	56,000
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	340,645,000	291,707,000
Amortization of share-based unearned compensation	15,489,000	9,344,000
Allowance for doubtful accounts	2,076,000	1,660,000
Amortization of deferred financing costs	6,762,000	7,733,000
Loss on early extinguishment of debt	780,000	1,205,000
Amortization of debt discount/premium	1,352,000	530,000
Amortization of acquired in-place lease value and deferred leasing costs	64,541,000	56,981,000
Amortization of acquired above-market leases and acquired below-market leases	-7,710,000	-8,831,000
Changes in assets and liabilities:	'	'
Restricted cash	11,060,000	2,487,000
Accounts and other receivables	-16,377,000	-11,601,000
Deferred rent	-58,874,000	-60,802,000
Deferred leasing costs	-15,178,000	-16,604,000
Other assets	-12,895,000	-9,355,000
Accounts payable and other accrued liabilities	3,668,000	13,304,000
Security deposits and prepaid rents	3,211,000	11,312,000
Net cash provided by operating activities	472,567,000	454,080,000
Cash flows from investing activities:	'	'
Acquisitions of real estate	-24,305,000	-154,801,000
Proceeds from sale of property, net	37,945,000	0
Proceeds from contribution of investment properties to unconsolidated joint ventures	178,933,000	328,569,000
Investment in unconsolidated joint ventures	-20,627,000	-7,297,000
Investment in equity securities	-2,000	-17,100,000
Deposits paid for acquisitions of real estate	0	-2,250,000
Receipt of value added tax refund	8,457,000	8,326,000
Refundable value added tax paid	-13,882,000	-11,805,000
Change in restricted cash	15,237,000	-1,292,000
Improvements to and advances for investments in real estate	-644,637,000	-882,346,000
Improvement advances to tenants	-15,505,000	-5,108,000
Collection of advances from tenants for improvements	13,500,000	3,978,000
Proceeds from insurance settlement	0	8,625,000
Net cash used in investing activities	-464,886,000	-732,501,000
Cash flows from financing activities:	'	'
Borrowings on revolving credit facility	952,590,000	1,292,146,000
Repayments on revolving credit facility	-1,182,341,000	-1,497,317,000
Principal payments on mortgage loans	-139,974,000	-109,661,000
Earnout payment related to the acquisition of the Sentrum Portfolio	-11,011,000	-25,783,000
Change in restricted cash	42,000	498,000
Payment of loan fees and costs	-5,209,000	-17,441,000
Capital (distributions paid to) contributions received from noncontrolling interests in consolidated joint ventures, net	-501,000	399,000
General partner contributions	353,316,000	241,188,000
Payment of dividends to preferred stockholders/unitholders	-49,010,000	-31,179,000
Payment of dividends/distributions to common stockholders and distributions to noncontrolling interests in operating partnership	-441,735,000	-400,953,000
Net cash (used in) provided by financing activities	-27,961,000	277,258,000
Net increase (decrease) in cash and cash equivalents	-20,280,000	-1,163,000
Cash and cash equivalents at beginning of period	56,808,000	56,281,000
Cash and cash equivalents at end of period	36,528,000	55,118,000
Supplemental disclosure of cash flow information:	'	'
Cash paid for interest, including amounts capitalized	165,818,000	159,746,000
Cash paid for income taxes	3,012,000	1,947,000
Supplementary disclosure of noncash investing and financing activities:	'	'
Change in net assets related to foreign currency translation adjustments	-30,104,000	-6,190,000
(Decrease) increase in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	-3,572,000	3,175,000
Acquisition measurement period adjustment included in accounts payable and other accrued liabilities	0	21,893,000
Preferred stock/units converted to shares of common stock/units	0	119,348,000
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	199,916,000	224,902,000
Additional accrual of contingent purchase price for investments in real estate	0	6,214,000
Accrual for potential earnout contingency	12,816,000	0
Issuance of common stock/units associated with exchange of exchangeable senior debentures	261,166,000	0
Allocation of purchase price of real estate/investment in partnership to:	'	'
Investments in real estate	24,305,000	143,033,000
Acquired above-market leases	0	203,000
Acquired below-market leases	0	-4,136,000
Acquired in-place lease value and deferred leasing costs	0	15,701,000
Cash paid for acquisition of real estate	24,305,000	154,801,000
Digital Realty Trust, L.P. | 4.25% Notes Due 2025	'	'
Cash flows from financing activities:	'	'
Borrowings on unsecured senior notes	0	630,026,000
Digital Realty Trust, L.P. | 4.75% Notes Due 2023	'	'
Cash flows from financing activities:	'	'
Borrowings on unsecured senior notes	495,872,000	0
Unsecured term loan	'	'
Cash flows from financing activities:	'	'
Borrowings on unsecured senior notes	0	195,335,000
Unsecured term loan | Digital Realty Trust, L.P.	'	'
Cash flows from financing activities:	'	'
Borrowings on unsecured senior notes	$0	$195,335,000

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (Parenthetical)(Senior Notes)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
	4.25% Notes Due 2025	4.25% Notes Due 2025	4.75% Notes Due 2023	4.75% Notes Due 2023
		Digital Realty Trust, L.P.		Digital Realty Trust, L.P.
Interest rate	4.25%	4.25%	4.75%	4.75%
Maturity date	'2025	'2025	'2023	'2023

Organization_And_Description_O

Organization And Description Of Business	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization And Description Of Business	'
	Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the Company) is engaged in the business of owning, acquiring, developing and managing technology-related real estate. The Company is focused on providing customer driven datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from financial services, cloud and information technology services, to manufacturing, energy, health care and consumer products. As of September 30, 2014, our portfolio consisted of 131 properties, including 14 properties held as investments in unconsolidated joint ventures and developable land, of which 105 are located throughout North America, 21 are located in Europe, three are located in Australia and two are located in Asia. We are diversified in major markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the United States, Amsterdam, Dublin, London and Paris markets in Europe and Singapore, Sydney, Melbourne, Hong Kong and Osaka markets in the Asia Pacific region. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national offices of technology companies.
	The Operating Partnership was formed on July 21, 2004 in anticipation of Digital Realty Trust, Inc.’s initial public offering (IPO) on November 3, 2004 and commenced operations on that date. As of September 30, 2014, Digital Realty Trust, Inc. owns a 97.7% 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_Account

Summary Of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary Of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	(a) Principles of Consolidation and Basis of Presentation
	The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.
	The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K, as amended, for the year ended December 31, 2013.
	The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:
	•	enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;
	•	eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and
	•	creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.
	There are a few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership and certain of its subsidiaries. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes.
	The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.
	The presentation of noncontrolling interests in operating partnership, stockholders’ equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.
	To help investors understand the significant differences between the Company and the Operating Partnership, these consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:
	•	condensed consolidated face financial statements; and
	•	the following notes to the condensed consolidated financial statements:
	•	Debt of the Company and Debt of the Operating Partnership;
	•	Income per Share and Income per Unit; and
	•	Equity and Accumulated Other Comprehensive Income, Net and Capital and Accumulated Other Comprehensive Income.
	In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.
	(b) Cash Equivalents
	For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2014, cash equivalents consist of investments in money market instruments.
	(c) 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.
	(d) 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 three months ended September 30, 2014 and 2013, we capitalized interest of approximately $5.4 million and $6.9 million, respectively, and $15.6 million and $18.8 million during the nine months ended September 30, 2014 and 2013, respectively. During the three months ended September 30, 2014 and 2013, we capitalized amounts relating to compensation and other overhead expense of employees direct and incremental to construction and successful leasing activities of approximately $13.3 million and $9.7 million, respectively, and $37.2 million and $29.6 million during the nine months ended September 30, 2014 and 2013, respectively. Capitalized leasing costs of $37.1 million and $36.4 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2014 and 2013, respectively.
	(e) 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 performance goals.
	(f) Income Taxes
	Digital Realty Trust, Inc. has elected to be treated as a real estate investment trust (a “REIT”) for federal income tax purposes. As a REIT, Digital Realty Trust, Inc. generally is not required to pay federal corporate income tax to the extent taxable income is currently distributed to its stockholders. If Digital Realty Trust, Inc. fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.
	The Company is subject to foreign, state and local income taxes in the jurisdictions in which it conducts business. The Company’s U.S. consolidated taxable REIT subsidiary is 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 September 30, 2014 and December 31, 2013, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated income statements. For the three and nine months ended September 30, 2014 and 2013, we had no such interest or penalties. The tax year 2011 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.
	(g) 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.
	(h) 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.
	Contractor type revenue for long-term contracts is recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs. Otherwise, construction management revenue and expense is reflected net of third party costs. As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.
	Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.
	(i) 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.
	(j) 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.
	(k) Management’s Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, contingent consideration, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.
	(l) Segment and Geographic Information
	All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of real estate services provided to them are standardized throughout the portfolio. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.
	Operating revenues from properties in the United States were $314.9 million and $294.1 million and outside the United States were $97.3 million and $85.4 million for the three months ended September 30, 2014 and 2013, respectively. Operating revenues from properties in the United States were $915.7 million and $845.0 million and outside the United States were $288.6 million and $256.3 million for the nine months ended September 30, 2014 and 2013, respectively. We had long-lived assets located in the United States of $5.6 billion and $5.6 billion and outside the United States of $2.7 billion and $2.7 billion as of September 30, 2014 and December 31, 2013, respectively.
	Operating revenues from properties located in the United Kingdom were $55.1 million and $48.0 million, or 13.4% and 12.7% of total operating revenues, for the three months ended September 30, 2014 and 2013, respectively. Operating revenues from properties located in the United Kingdom were $164.5 million and $144.0 million, or 13.7% and 13.1% of total operating revenues, for the nine months ended September 30, 2014 and 2013, respectively. No other foreign country comprised more than 10% of total operating revenues for each of these periods. We had long-lived assets located in the United Kingdom of $1.8 billion and $1.8 billion, or 21.1% and 21.1% of total long-lived assets, as of September 30, 2014 and December 31, 2013, respectively. No other foreign country comprised more than 10% of total long-lived assets as of September 30, 2014 and December 31, 2013.
	(m) Reclassifications
	Certain immaterial reclassifications to prior year amounts have been made to conform to the current year presentation. As of December 31, 2013, approximately $58.9 million was reclassified from security deposits and prepaid rents to accounts and other receivables. During the three and nine months ended September 30, 2013, $(0.9) million and $(13,000) were reclassified from rental property operating and maintenance expense to change in fair value of contingent consideration, respectively.
	(n) Recent Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-8, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360), Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which amends the requirements for reporting discontinued operations. Under ASU 2014-8, a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results when the component or group of components meets the criteria to be classified as held for sale or when the component or group of components is disposed of by sale or other than by sale. In addition, this ASU requires additional disclosures about both discontinued operations and the disposal of an individually significant component of an entity that does not qualify for discontinued operations presentation in the financial statements. As permitted by the standard, the Company has elected to early adopt the provisions of ASU 2014-8 as of January 1, 2014 and is applying the provisions prospectively.
	In May 2014, the FASB issued ASU No. 2014-9, Revenue from Contracts with Customers, a comprehensive new revenue recognition standard that supersedes most all existing revenue recognition guidance. This standard’s core principle is that a company will recognize revenue when it transfers goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods and services. However, leasing contracts, representing the major source of the Company’s revenues, are not within the scope of the new standard and will continue to be accounted for under existing standards. This new standard is effective for the Company for annual and interim periods beginning on January 1, 2017 with early adoption prohibited. The Company has not yet determined the effects on the condensed consolidated financial statements and related notes resulting from the adoption of this new standard.

Investments_In_Real_Estate

Investments In Real Estate	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Investments In Real Estate	'
	Investments in Real Estate
	We acquired the following real estate property during the nine months ended September 30, 2014:
	Location	Metropolitan Area	Date Acquired	Amount
				(in millions) (1)
	Crawley 2 (2)	London	September 16, 2014	$	23
	(1) Purchase price in U.S. dollars and excludes 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 vacant land which is not included in our operating property count.
	On April 7, 2014, the Operating Partnership sold 6 Braham Street to the tenant pursuant to a sale of the ownership interests in the Operating Partnership’s wholly owned subsidiary that owned the building for £25.0 million (or approximately $41.5 million based on the exchange rate as of April 7, 2014). The transaction after costs and various tenant prepayments resulted in net proceeds of approximately £22.6 million (or approximately $37.5 million based on the exchange rate as of April 7, 2014) and a net gain of approximately $15.9 million. The transaction includes substantially all of the assets of 6 Braham Street and we expect no further cash flows following the sale date.
	The property was identified as held for sale in March 2014. 6 Braham Street was not a significant component of our United Kingdom portfolio nor does the sale of 6 Braham represent a significant shift in our strategy.
	We are currently in the process of identifying certain non-core investment properties we intend to sell as part of our capital recycling strategy. Our capital recycling program is designed to identify non-strategic and underperforming assets that can be sold to generate proceeds that will support the funding of our core investment activity. We expect our capital recycling initiative will likewise have a meaningfully positive impact on overall return on invested capital. During this process, we are evaluating the carrying value of the investment properties to ensure the carrying value is recoverable in light of a potentially shorter holding period. As a result of our evaluation, during the three months ended September 30, 2014, we recognized $12.5 million of impairment losses on two properties located in the Midwest and Northeast regions. As of September 30, 2014, these properties do not meet the criteria to be classified as held for sale.
	Subsequent to September 30, 2014, the Company has taken the necessary actions to conclude that five properties to be disposed of met the criteria under authoritative accounting guidance to be classified as held for sale.  As these criteria had not been met as of September 30, 2014, these properties are classified as held for use in the accompanying condensed consolidated financial statements.  As of September 30, 2014, these five properties had an aggregate carrying value of $143.8 million within total assets and $4.5 million within total liabilities.

Investment_In_Unconsolidated_J

Investment In Unconsolidated Joint Ventures	9 Months Ended
	Sep. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Investment In Unconsolidated Joint Ventures	'
	Investment in Unconsolidated Joint Ventures
	As of September 30, 2014, our investment in unconsolidated joint ventures consists of effective 50% interests in three joint ventures that own data center properties at 2001 Sixth Avenue in Seattle, Washington, 2020 Fifth Avenue in Seattle, Washington and 33 Chun Choi Street in Hong Kong, and 20% interests in two joint ventures, one of which owns 10 data center properties with an investment fund managed by Prudential Real Estate Investors (PREI®) and the other which owns one data center property with an affiliate of Griffin Capital Essential Asset REIT, Inc. (GCEAR). The following tables present summarized financial information for the joint ventures as of September 30, 2014 and December 31, 2013 and for the nine months ended September 30, 2014 and 2013 (in thousands):
		As of September 30, 2014										Nine Months Ended September 30, 2014
	2014	Net Investment		Total Assets		Debt		Total		Equity		Revenues		Property			Net		Net Income
		in Properties						Liabilities						Operating			Operating
														Expense			Income
	Total Unconsolidated Joint Ventures	$	845,132	$	956,107	$	461,919	$	578,515	$	377,592	$	71,882	$	(17,409	)	$	54,473	$	23,350
	Our investment in and share of equity in earnings of unconsolidated joint ventures									$	94,497								$	9,513
		As of December 31, 2013										Nine Months Ended September 30, 2013
	2013	Net Investment		Total Assets		Debt		Total		Equity		Revenues		Property			Net		Net Income
		in Properties						Liabilities						Operating			Operating
														Expense			Income
	Total Unconsolidated Joint Ventures	$	584,837	$	676,015	$	337,953	$	444,062	$	231,953	$	33,992	$	(9,305	)	$	24,687	$	13,072
	Our investment in and share of equity in earnings of unconsolidated joint ventures									$	70,504								$	6,839
	PREI ® Joint Venture
	On March 5, 2014, we contributed the 636 Pierce Street property, which we acquired in December 2013, to our unconsolidated joint venture with the PREI® fund that was formed in September 2013. The property was valued at approximately $40.4 million and subject to $26.1 million in debt, which the joint venture assumed. The PREI® fund contributed approximately $11.4 million in cash for their 80% share of the net asset value of $14.3 million. Subsequent to the closing, the joint venture refinanced the existing debt with $23.0 million drawn from the joint venture’s bank facility. Including the refinance costs, the PREI® fund contributed $17.5 million for the 636 Pierce Street property, bringing their contributed capital in the joint venture to $164.8 million.
	The transaction produced a $1.9 million gain for the Company representing the difference between the $11.4 million of cash proceeds received by the Company for its 80% share of the net asset less the Company’s book value.
	Griffin Capital Essential Asset REIT, Inc. Joint Venture
	On September 9, 2014, we formed a joint venture with an affiliate of Griffin Capital Essential Asset REIT, Inc. (GCEAR). We contributed to the joint venture the property located at 43915 Devin Shafron Drive (Building A) in Ashburn, Virginia, which is a Turn-Key Flex® data center property valued at approximately $185.5 million (excluding approximately $2.1 million of closing costs). GCEAR contributed cash to the joint venture and will hold an 80% interest in the joint venture. We retained a 20% interest in the joint venture. The joint venture agreement provides for a current annual preferred return from cash flow first to GCEAR and then to us, after which a portion of any excess cash flows is shared by the partners based on their respective interests and the remaining portion is paid to us as a promote interest. We will perform the day-to-day accounting and property management functions for the joint venture and the property and, as such, will earn management fees. Although we are the managing member of the joint venture and manage the day-to-day activities, certain major decisions, including approval of annual budgets, require approval of the GCEAR member. Thus, we concluded we do not own a controlling interest and will account for our interest in the joint venture as an equity method investment.
	The joint venture arranged a $102.0 million five-year secured bank loan at LIBOR plus 225 basis points, representing a loan-to-value ratio of approximately 55%. The joint venture entered into an interest rate swap agreement to effectively fix the interest rate on approximately $51.0 million of borrowings under the loan through September 2019.  Two one-year extensions of the maturity date are available under the loan agreement, which the joint venture may exercise if certain conditions are met. Proceeds from this loan offset the initial cash capital contribution amount required from GCEAR and was used to provide us with a special distribution on account of a portion of the contribution value of the property. The transaction generated approximately $167.5 million of net proceeds to us, comprised of our share of the initial draw-down on the bank loan in addition to GCEAR’s equity contribution, less our share of closing costs. Accordingly we recognized a gain of approximately $93.5 million on the sale of the 80% interest in the joint venture during the three months ended September 30, 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.

Acquired_Intangible_Assets_And

Acquired Intangible Assets And Liabilities	9 Months Ended
	Sep. 30, 2014
Acquired Intangible Assets And Liabilities [Abstract]	'
Acquired Intangible Assets And Liabilities	'
	Acquired Intangible Assets and Liabilities
	The following summarizes our acquired intangible assets (acquired in-place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of September 30, 2014 and December 31, 2013.
		Balance as of
	(Amounts in thousands)	30-Sep-14			31-Dec-13
	Acquired in-place lease value:
	Gross amount	$	709,044		$	725,458
	Accumulated amortization	(464,388		)	(423,549		)
	Net	$	244,656		$	301,909
	Acquired above-market leases:
	Gross amount	$	128,747		$	132,750
	Accumulated amortization	(86,270		)	(80,486		)
	Net	$	42,477		$	52,264
	Acquired below-market leases:
	Gross amount	$	285,291		$	291,638
	Accumulated amortization	(174,583		)	(161,369		)
	Net	$	110,708		$	130,269
	Amortization of acquired below-market leases, net of acquired above-market leases, resulted in an increase to rental revenues of $2.4 million and $2.7 million for the three months ended September 30, 2014 and 2013, respectively, and $7.7 million and $8.8 million for the nine months ended September 30, 2014 and 2013, respectively. The expected average remaining lives for acquired below-market leases and acquired above-market leases is 6.4 years and 4.0 years, respectively, as of September 30, 2014. Estimated annual amortization of acquired below-market leases, net of acquired above-market leases, for each of the five succeeding years and thereafter, commencing October 1, 2014 is as follows:
	(Amounts in thousands)
	Remainder of 2014	$	2,273
	2015	9,017
	2016	7,526
	2017	6,055
	2018	4,440
	Thereafter	38,920
	Total	$	68,231
	Amortization of acquired in-place lease value (a component of depreciation and amortization expense) was $16.5 million and $15.7 million for the three months ended September 30, 2014 and 2013, respectively, and $50.0 million and $46.0 million for the nine months ended September 30, 2014 and 2013, respectively. The expected average amortization period for acquired in-place lease value is 6.1 years as of September 30, 2014. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 4.7 years as of September 30, 2014. Estimated annual amortization of acquired in-place lease value for each of the five succeeding years and thereafter, commencing October 1, 2014 is as follows:
	(Amounts in thousands)
	Remainder of 2014	$	12,631
	2015	41,459
	2016	33,051
	2017	28,352
	2018	25,943
	Thereafter	103,220
	Total	$	244,656

Debt_Of_The_Company

Debt Of The Company	9 Months Ended
	Sep. 30, 2014
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 4.500% notes due 2015 (2015 Notes), 5.875% notes due 2020 (2020 Notes), 5.250% notes due 2021 (2021 Notes), 3.625% notes due 2022 (2022 Notes) and its unsecured senior notes sold to Prudential Investment Management, Inc. and certain of its affiliates pursuant to the Amended and Restated Note Purchase and Private Shelf Agreement, 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). The Company is also the guarantor of the Operating Partnership’s and its subsidiary borrowers’ obligations under the global revolving credit facility and unsecured term loan.

Debt_Of_The_Operating_Partners

Debt Of The Operating Partnership (Digital Realty Trust, L.P.)	9 Months Ended
	Sep. 30, 2014
Digital Realty Trust, L.P.	'
Debt Of The Operating Partnership	'
	Debt of the Operating Partnership
	A summary of outstanding indebtedness of the Operating Partnership as of September 30, 2014 and December 31, 2013 is as follows (in thousands):
	Indebtedness	Interest Rate at September 30, 2014		Maturity Date		Principal Outstanding September 30, 2014				Principal Outstanding December 31, 2013
	Global revolving credit facility	Various	-1	Nov 3, 2017		$	485,023		-2	$	724,668		-2
	Unsecured term loan	Various	(3)(8)	Apr 16, 2017		1,002,186			-4	1,020,984			-4
	Unsecured senior notes:
	Prudential Shelf Facility:
	Series C	9.68%		Jan 6, 2016		25,000				25,000
	Series D	4.57%		Jan 20, 2015		50,000				50,000
	Series E	5.73%		Jan 20, 2017		50,000				50,000
	Series F	4.50%		Feb 3, 2015		17,000				17,000
	Total Prudential Shelf Facility					142,000				142,000
	Senior Notes:
	4.50% notes due 2015	4.50%		Jul 15, 2015		375,000				375,000
	5.875% notes due 2020	5.88%		Feb 1, 2020		500,000				500,000
	5.25% notes due 2021	5.25%		Mar 15, 2021		400,000				400,000
	3.625% notes due 2022	3.62%		Oct 1, 2022		300,000				300,000
	4.75% notes due 2023	4.75%		Oct 13, 2023		486,390			-9	—
	4.25% notes due 2025	4.25%		Jan 17, 2025		648,520			-9	662,280			-9
	Unamortized discounts					(16,432		)		(15,048		)
	Total senior notes, net of discount					2,693,478				2,222,232
	Total unsecured senior notes, net of discount					2,835,478				2,364,232
	Exchangeable senior debentures:
	5.50% exchangeable senior debentures due 2029	5.50%		Apr 15, 2029	-5	—				266,400
	Total exchangeable senior debentures					—				266,400
	Indebtedness	Interest Rate at September 30, 2014		Maturity Date		Principal Outstanding September 30, 2014				Principal Outstanding December 31, 2013
	Mortgage loans:
	Secured Term Debt (6)(7)	5.65%		Nov 11, 2014		$	—		-12	$	132,966
	200 Paul Avenue 1-4 (7)	5.74%		Oct 8, 2015		69,191				70,713
	2045 & 2055 Lafayette Street (7)	5.93%		Feb 6, 2017		62,836				63,623
	34551 Ardenwood Boulevard 1-4 (7)	5.95%		Nov 11, 2016		51,549				52,152
	1100 Space Park Drive (7)	5.89%		Dec 11, 2016		51,507				52,115
	600 West Seventh Street	5.80%		Mar 15, 2016		48,266				49,548
	150 South First Street (7)	6.30%		Feb 6, 2017		49,518				50,097
	2334 Lundy Place (7)	5.96%		Nov 11, 2016		37,493				37,930
	Cressex 1 (10)	5.68%		Oct 16, 2014	(13)	27,616			-9	28,583			-9
	636 Pierce Street	5.27%		Apr 15, 2023		—			-11	26,327
	Manchester Technopark (10)	5.68%		Oct 16, 2014	(13)	8,401			-9	8,695			-9
	8025 North Interstate 35	4.09%		Mar 6, 2016		6,122				6,314
	731 East Trade Street	8.22%		Jul 1, 2020		3,926				4,186
	Unamortized net premiums					617				2,359
	Total mortgage loans, net of premiums					417,042				585,608
	Total indebtedness					$	4,739,729			$	4,961,892
	_________________________________
	-1	The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 110 basis points, which is based on the current credit ratings of our long-term debt. An annual facility fee of 20 basis points, which is based on the 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 September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):
	Denomination of Draw	Balance as of September 30, 2014				Weighted-average			Balance as of December 31, 2013				Weighted-average
						interest rate							interest rate
	Floating Rate Borrowing (a)
	U.S. dollar ($)	$	115,000			1.25	%		$	466,000			1.27	%
	British pound sterling (£)	57,718			(c)	1.62	%		—				—	%
	Euro (€)	60,629			(c)	1.11	%		78,335			(d)	1.33	%
	Australian dollar (AUD)	75,574			(c)	3.75	%		67,212			(d)	3.7	%
	Hong Kong dollar (HKD)	77,165			(c)	1.32	%		57,390			(d)	1.31	%
	Japanese yen (JPY)	14,319			(c)	1.18	%		12,858			(d)	1.21	%
	Canadian dollar (CAD)	61,618			(c)	2.35	%		14,873			(d)	2.32	%
	Total	$	462,023			1.84	%		$	696,668			1.53	%
	Base Rate Borrowing (b)
	U.S. dollar ($)	$	23,000			3.35	%		$	28,000			3.35	%
	Total borrowings	$	485,023			1.91	%		$	724,668			1.6	%
	(a)	The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.
	(b)	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.
	(c)	Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.
(d)	Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.
-3	Interest rates are based on our current senior unsecured debt ratings and are 120 basis points over the applicable index for floating rate advances. Two six-month extensions are available, which we may exercise if certain conditions are met.
-4	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):
Denomination of Draw	Balance as of September 30, 2014				Weighted-average			Balance as of December 31, 2013				Weighted-average
					interest rate							interest rate
U.S. dollar ($)	$	410,905			1.36	%	(b)	$	410,905			1.37	%	(d)
Singapore dollar (SGD)	179,103			(a)	1.42	%	(b)	180,918			(c)	1.4	%	(d)
British pound sterling (£)	196,056			(a)	1.75	%		200,216			(c)	1.72	%
Euro (€)	125,678			(a)	1.21	%		136,743			(c)	1.43	%
Australian dollar (AUD)	90,444			(a)	3.84	%		92,202			(c)	3.78	%
Total	$	1,002,186			1.65	%	(b)	$	1,020,984			1.67	%	(d)
(a)	Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.
(b)	As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.
(c)	Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.
(d)	As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
-5	The 2029 Debentures were redeemed in April 2014.
-6	This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.
-7	The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.
-8	We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar and Singapore dollar tranches of the unsecured term loan. See note 14 for further information.
-9	Based on exchange rate of $1.62 to £1.00 as of September 30, 2014 and $1.66 to £1.00 as of December 31, 2013.
-10	These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.
-11	On March 5, 2014, we contributed this property to our unconsolidated joint venture with an investment fund managed by Prudential Real Estate Investors which was formed in September 2013. Also on March 5, 2014, the joint venture assumed the debt and repaid in full the outstanding balance of $26.1 million on the mortgage loan.
-12	These loans were repaid in full in September 2014.
-13	These loans were repaid in full in October 2014.
Global Revolving Credit Facility
On August 15, 2013, the Operating Partnership refinanced its global revolving credit facility, increasing its total borrowing capacity to $2.0 billion from $1.8 billion. The global revolving credit facility has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to $2.55 billion, subject to the receipt of lender commitments and other conditions precedent. The refinanced facility matures on November 3, 2017, with two six-month extension options available. The interest rate for borrowings under the expanded facility equals the applicable index plus a margin which is based on the credit ratings of our long-term debt and is currently 110 basis points. An annual facility fee on the total commitment amount of the facility, based on the credit ratings of our long-term debt, 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, Swiss franc, Japanese yen and Mexican peso denominations. As of September 30, 2014, interest rates are based on 1-month LIBOR, 1-month EURIBOR, 1-month BBR, 1-month HIBOR, 1-month JPY LIBOR and 1-month CDOR plus a margin of 1.10%. The facility also bore a base borrowing rate of 3.35% (USD) which is based on U.S. Prime Rate plus a margin of 0.10%. We have used and intend to use available borrowings under the global revolving credit facility to acquire additional properties, to 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 September 30, 2014, we have capitalized approximately $18.0 million of financing costs related to the global revolving credit facility. As of September 30, 2014, approximately $485.0 million was drawn under the global revolving credit facility and $23.0 million of letters of credit were issued.
The global revolving credit facility contains various restrictive covenants, including limitations on our ability to incur additional indebtedness, make certain investments or merge with another company, and requirements to maintain financial coverage ratios, including with respect to unencumbered assets. In addition, the global revolving credit facility restricts Digital Realty Trust, Inc. from making distributions to its stockholders, or redeeming or otherwise repurchasing shares of its capital stock, after the occurrence and during the continuance of an event of default, except in limited circumstances including as necessary to enable Digital Realty Trust, Inc. to maintain its qualification as a REIT and to minimize the payment of income or excise tax. As of September 30, 2014, we were in compliance with all of such covenants.
Unsecured Term Loan
On August 15, 2013, we refinanced the senior unsecured multi-currency term loan facility, increasing its total borrowing capacity to $1.0 billion from $750.0 million. Pursuant to the accordion feature, total commitments can be increased to $1.1 billion, subject to the receipt of lender commitments and other conditions precedent. The facility matures on April 16, 2017, with two six-month extension options available. Interest rates are based on our senior unsecured debt ratings and are currently 120 basis points over the applicable index for floating rate advances. Funds may be drawn in U.S, Singapore and Australian dollars, as well as Euro and British pound sterling denominations with the option to add Hong Kong dollars and Japanese yen upon an accordion exercise. Based on exchange rates in effect at September 30, 2014, the balance outstanding is approximately $1.0 billion. We have used borrowings under the term loan for acquisitions, repayment of indebtedness, development, working capital and general corporate purposes. The covenants under this loan are consistent with our global revolving credit facility and, as of September 30, 2014, we were in compliance with all of such covenants. As of September 30, 2014, we have capitalized approximately $8.4 million of financing costs related to the unsecured term loan.
Exchangeable Senior Debentures
5.50% Exchangeable Senior Debentures due 2029
On April 20, 2009, the Operating Partnership issued $266.4 million of its 5.50% exchangeable senior debentures due April 15, 2029 (the 2029 Debentures). Costs incurred to issue the 2029 Debentures were approximately $7.8 million. These costs were amortized over a period of five years, which represented the estimated term of the 2029 Debentures, and are included in deferred financing costs, net in the condensed consolidated balance sheet. The 2029 Debentures were general unsecured senior obligations of the Operating Partnership, ranked equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and were fully and unconditionally guaranteed by Digital Realty Trust, Inc.
Interest was payable on October 15 and April 15 of each year beginning October 15, 2009 until the maturity date of April 15, 2029. The 2029 Debentures bore interest at 5.50% per annum and were exchangeable for shares of Digital Realty Trust, Inc. common stock at an exchange rate that was initially 23.2558 shares per $1,000 principal amount of 2029 Debentures. The exchange rate on the 2029 Debentures was subject to adjustment for certain events, including, but not limited to, certain dividends on Digital Realty Trust, Inc. common stock in excess of $0.33 per share per quarter (the “reference dividend”). Effective December 11, 2013, the exchange rate had been adjusted to 25.5490 shares per $1,000 principal amount of 2029 Debentures as a result of the aggregate dividends in excess of the reference dividend that Digital Realty Trust, Inc. declared and paid on its common stock beginning with the quarter ended September 30, 2013 and through the quarter ended December 31, 2013.
On March 17, 2014, we commenced an offer to repurchase, at the option of each holder, any and all of the outstanding 2029 Debentures at a price equal to 100% of the principal amount, as required by the terms of the indenture governing the 2029 Debentures. The repurchase offer expired on April 11, 2014. No 2029 Debentures were repurchased pursuant to this offer. On March 17, 2014, we also distributed a Notice of Redemption to the holders of the 2029 Debentures that the Operating Partnership intended to redeem all of the outstanding 2029 Debentures, pursuant to its option under the indenture governing the 2029 Debentures, on April 18, 2014, at a price equal to 100% of the principal amount, plus accrued and unpaid interest thereon up to the redemption date. In connection with the redemption, holders of the 2029 Debentures had the right to exchange their 2029 Debentures on or prior to April 16, 2014. The 2029 Debentures not surrendered pursuant to the repurchase offer on or prior to April 11, 2014, or for exchange on or prior to April 16, 2014, were redeemed on April 18, 2014.
In connection with the redemption, at the request of the holders that exercised their exchange right pursuant to the terms of the 2029 Debentures, we issued 6,734,938 restricted shares of Digital Realty Trust, Inc. common stock in exchange for approximately $261.2 million in aggregate principal amount of the 2029 Debentures based on the then-applicable exchange rate of 25.7880 shares per $1,000 principal amount of 2029 Debentures. On April 18, 2014, the Operating Partnership redeemed for cash approximately $5.2 million in aggregate principal amount of the 2029 Debentures pursuant to its option under the indenture governing the 2029 Debentures at a price equal to 100% of the principal amount plus accrued and unpaid interest thereon up to the redemption date.
On July 11, 2014, we issued 134,974 restricted shares of Digital Realty Trust, Inc. common stock in exchange for approximately $5.2 million in aggregate principal amount of the 2029 Debentures to certain previous holders of the 2029 Debentures. The holders had the right to exchange the 2029 Debentures for shares of Digital Realty Trust, Inc. common stock, but inadvertently failed to exercise such rights. As a result, the 2029 Debentures were redeemed by the Operating Partnership for cash. We agreed to issue the shares of the common stock to the holders in exchange for the redemption payment that they received in the original redemption, effectively putting such holders in the same place as if they had originally exercised their rights to exchange their 2029 Debentures for the shares of Digital Realty Trust, Inc. common stock.
Senior Notes
4.750% Notes due 2023
On April 1, 2014, Digital Stout Holding, LLC, a wholly owned subsidiary of Digital Realty Trust, L.P., issued £300.0 million (or approximately $498.9 million based on the April 1, 2014 exchange rate of £1.00 to $1.66) aggregate principal amount of its 4.750% Guaranteed Notes due 2023, or the 2023 Notes. The 2023 Notes are senior unsecured obligations of Digital Stout Holding, LLC and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. and Digital Realty Trust, L.P. Interest on the 2023 Notes is payable semiannually in arrears at a rate of 4.750% per annum. The 2023 Notes mature on October 13, 2023. The net proceeds from the offering after deducting the original issue discount of approximately $3.0 million and underwriting commissions and estimated expenses of approximately $5.0 million was approximately $490.9 million. We used the net proceeds from this offering to temporarily repay borrowings under our global revolving credit facility. The 2023 Notes have been reflected net of discount in the condensed consolidated balance sheet. The indenture governing the 2023 Notes contains certain covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 40% and (3) an interest coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal amount of the unsecured debt. At September 30, 2014, we were in compliance with these financial covenants.
The table below summarizes our debt maturities and principal payments as of September 30, 2014 (in thousands):
	Global Revolving				Unsecured				Prudential				Senior Notes			Mortgage			Total
	Credit Facility(1)				Term Loan (1)				Shelf Facility							Loans (2)			Debt
Remainder of 2014	$	—			$	—			$	—			$	—		$	38,188	(3)	$	38,188
2015	—				—				67,000				375,000			75,493			517,493
2016	—				—				25,000				—			191,979			216,979
2017	485,023				1,002,186				50,000				—			108,395			1,645,604
2018	—				—				—				—			593			593
Thereafter	—				—				—				2,334,910			1,777			2,336,687
Subtotal	$	485,023			$	1,002,186			$	142,000			$	2,709,910		$	416,425		$	4,755,544
Unamortized discount	—				—				—				(16,432		)	—			(16,432		)
Unamortized premium	—				—				—				—			617			617
Total	$	485,023			$	1,002,186			$	142,000			$	2,693,478		$	417,042		$	4,739,729
-1	Subject to two six-month extension options exercisable by us. The bank group is obligated to grant the extension options provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility and the unsecured term loan, as applicable.
-2	Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2014, we provided partial letter of credit support with respect to approximately $36.0 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2014).
-3	Mortgage loans in the amount of approximately $36.0 million were paid in full in October 2014.

Income_Per_Share

Income Per Share	9 Months Ended
	Sep. 30, 2014
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):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Net income available to common stockholders--basic	$	109,314		$	138,872		$	185,010	$	228,606
	Add: Interest and amortization of debt issuance costs on 2029 Debentures	—			4,050			—		—
	Net income available to common stockholders--diluted	$	109,314		$	142,922		$	185,010	$	228,606
	Weighted average shares outstanding—basic	135,492,618			128,427,444			132,635,894		127,771,419
	Potentially dilutive common shares:
	Stock options	52,629			58,150			46,649		64,767
	Unvested incentive units	129,024			132,195			61,122		119,583
	2014 market performance-based awards	272,262			—			109,301		—
	Effect of dilutive 2029 Debentures	—			6,683,976			—		—
	Weighted average shares outstanding—diluted	135,946,533			135,301,765			132,852,966		127,955,769
	Income per share:
	Basic	$	0.81		$	1.08		$	1.39	$	1.79
	Diluted	$	0.8		$	1.06		$	1.39	$	1.79
	We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014		2013
	Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	2,815,512		2,549,749			2,745,730		2,515,964
	Potentially dilutive 2029 Debentures	—		—			2,617,790		6,628,489
	Potentially dilutive Series D Cumulative Convertible Preferred Stock	—		—			—		629,389
	Potentially dilutive Series E Cumulative Redeemable Preferred Stock	4,673,322		5,251,059			5,136,112		4,853,976
	Potentially dilutive Series F Cumulative Redeemable Preferred Stock	2,963,810		3,330,210			3,257,310		3,078,381
	Potentially dilutive Series G Cumulative Redeemable Preferred Stock	4,052,525		4,553,517			4,453,839		2,918,921
	Potentially dilutive Series H Cumulative Redeemable Preferred Stock	5,938,553		—			4,111,306		—
		20,443,722		15,684,535			22,322,087		20,625,120

Income_Per_Unit

Income Per Unit	9 Months Ended
	Sep. 30, 2014
Income Per Unit [Abstract]	'
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):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Net income available to common unitholders--basic	$	111,586		$	141,629		$	188,848	$	233,123
	Add: Interest and amortization of debt issuance costs on 2029 Debentures	—			4,050			—		—
	Net income available to common unitholders--diluted	$	111,586		$	145,679		$	188,848	$	233,123
	Weighted average units outstanding—basic	138,308,130			130,977,193			135,381,624		130,287,383
	Potentially dilutive common units:
	Stock options	52,629			58,150			46,649		64,767
	Unvested incentive units	129,024			132,195			61,122		119,583
	2014 market performance-based awards	272,262			—			109,301		—
	Effect of dilutive 2029 Debentures	—			6,683,976			—		—
	Weighted average units outstanding—diluted	138,762,045			137,851,514			135,598,696		130,471,733
	Income per unit:
	Basic	$	0.81		$	1.08		$	1.39	$	1.79
	Diluted	$	0.8		$	1.06		$	1.39	$	1.79
	We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014		2013
	Potentially dilutive 2029 Debentures	—		—			2,617,790		6,628,489
	Potentially dilutive Series D Cumulative Convertible Preferred Units	—		—			—		629,389
	Potentially dilutive Series E Cumulative Redeemable Preferred Units	4,673,322		5,251,059			5,136,112		4,853,976
	Potentially dilutive Series F Cumulative Redeemable Preferred Units	2,963,810		3,330,210			3,257,310		3,078,381
	Potentially dilutive Series G Cumulative Redeemable Preferred Units	4,052,525		4,553,517			4,453,839		2,918,921
	Potentially dilutive Series H Cumulative Redeemable Preferred Units	5,938,553		—			4,111,306		—
		17,628,210		13,134,786			19,576,357		18,109,156

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Digital Realty Trust, Inc. has elected to be treated and believes that it has been organized and has operated in a manner that has enabled it to qualify as a REIT for federal income tax purposes. As a REIT, Digital Realty Trust, Inc. is generally not subject to corporate level federal income taxes on earnings distributed currently to its stockholders. Since inception, Digital Realty Trust, Inc. has distributed at least 100% of its taxable income annually and intends to do so for the tax year ending December 31, 2014. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2014 and 2013.
	The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.
	We have elected taxable REIT subsidiary (“TRS”) status for some of our consolidated subsidiaries. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. Income taxes for TRS entities were accrued, as necessary, for the three and nine months ended September 30, 2014 and 2013.
	For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in the income statement. Deferred tax assets (net of valuation allowance) and liabilities for our TRS entities and foreign subsidiaries were accrued, as necessary, for the three and nine months ended September 30, 2014 and 2013. As of September 30, 2014, we had deferred tax liabilities, net of deferred tax assets, of approximately $143.3 million primarily related to our foreign properties. The majority of our net deferred tax liability relates to differences between tax basis and book basis of the assets acquired in the Sentrum Portfolio acquisition during 2012.

Equity_And_Accumulated_Other_C

Equity And Accumulated Other Comprehensive Income, Net	9 Months Ended
	Sep. 30, 2014
Equity And Accumulated Other Comprehensive Income, Net [Abstract]	'
Equity And Accumulated Other Comprehensive Income, Net	'
	Equity and Accumulated Other Comprehensive Income, Net
	(a) Equity Distribution Agreements
	Digital Realty Trust, Inc. entered into equity distribution agreements in June 2011, 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 can 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 nine months ended September 30, 2014 and 2013. As of September 30, 2014, shares of common stock having an aggregate offering price of $53.8 million remained available for offer and sale under the program.
	(b) Redeemable Preferred Stock
	7.375% Series H Cumulative Redeemable Preferred Stock
	On March 26, 2014, Digital Realty Trust, Inc. issued 12,000,000 shares of its 7.375% series H cumulative redeemable preferred stock, or the series H preferred stock, for net proceeds of approximately $289.3 million. In addition, on April 7, 2014, Digital Realty Trust, Inc. issued an additional 600,000 shares of series H preferred stock pursuant to a partial exercise of the underwriters’ over-allotment option. Also, on April 7, 2014, Digital Realty Trust, Inc. re-opened and issued an additional 2,000,000 shares of series H preferred stock. Pursuant to these issuances, Digital Realty Trust, Inc. issued a total of 14,600,000 shares of its series H preferred stock, for net proceeds of approximately $353.3 million. Dividends are cumulative on the series H preferred stock from the date of original issuance in the amount of $1.84375 per share each year, which is equivalent to 7.375% of the $25.00 liquidation preference per share. Dividends on the series H preferred stock are payable quarterly in arrears. The first dividend payable on the series H preferred stock on June 30, 2014 was a pro rata dividend from and including the original issue date to and including June 30, 2014 in the amount of $0.48655 per share. The series H preferred stock does not have a stated maturity date and is not subject to any sinking fund or mandatory redemption provisions. Upon liquidation, dissolution or winding up, the series H preferred stock will rank senior to Digital Realty Trust, Inc. common stock and rank on parity with Digital Realty Trust, Inc.’s series E cumulative redeemable preferred stock, series F cumulative redeemable preferred stock and series G 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.
	(c) 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 interests in the Operating Partnership as of September 30, 2014 and December 31, 2013:
		30-Sep-14						31-Dec-13
		Number of units			Percentage of total			Number of units			Percentage of total
	Digital Realty Trust, Inc.	135,503,184			97.7	%		128,455,350			97.7	%
	Noncontrolling interests consist of:
	Common units held by third parties	1,478,814			1.1			1,491,814			1.2
	Incentive units held by employees and directors (see note 13)	1,645,372			1.2			1,475,207			1.1
		138,627,370			100	%		131,422,371			100	%
	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 $175.6 million and $124.1 million based on the closing market price of Digital Realty Trust, Inc. common stock on September 30, 2014 and December 31, 2013, respectively.
	The following table shows activity for the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2014:
		Common Units			Incentive Units			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)	(13,000	)		—			(13,000	)
	Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1)	—			(4,941	)		(4,941	)
	Cancellation of incentive units held by employees and directors	—			(24,380	)		(24,380	)
	Grant of incentive units to employees and directors	—			199,486			199,486
	As of September 30, 2014	1,478,814			1,645,372			3,124,186
	-1	This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.
	(d) Dividends
	We have declared and paid the following dividends on our common and preferred stock for the nine months ended September 30, 2014 (in thousands, except per share data):
	Date dividend declared	Dividend		Series E				Series F				Series G		Series H			Common
		payment date		Preferred				Preferred				Preferred		Preferred			Stock
				Stock				Stock				Stock		Stock
	February 11, 2014	March 31, 2014		$	5,031			$	3,023			$	3,672	$	—		$	106,743
	April 29, 2014	June 30, 2014		5,031				3,023				3,672		7,104		-1	112,357
	July 21, 2014	September 30, 2014		$	5,031			$	3,023			$	3,672	$	6,730		$	112,465
				$	15,093			$	9,069			$	11,016	$	13,834		$	331,565
	Annual rate of dividend per share			$	1.75			$	1.656			$	1.469	$	1.844		$	3.32
	-1	Represents a pro rata dividend from and including the original issue date (March 26, 2014) to and including June 30, 2014.
	Distributions out of Digital Realty Trust, Inc.’s current or accumulated earnings and profits are generally classified as dividends whereas distributions in excess of its current and accumulated earnings and profits, to the extent of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock, are generally classified as a return of capital. Distributions in excess of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock are generally characterized as capital gain. Cash provided by operating activities has generally been sufficient to fund all distributions; however, in the future we may also need to utilize borrowings under the global revolving credit facility to fund all or a portion of distributions.
	(e) Accumulated Other Comprehensive Income, Net
	The accumulated balances for each item within other comprehensive income, net are as follows (in thousands):
		Foreign currency				Cash flow hedge				Accumulated other
		translation				adjustments				comprehensive income (loss), net
		adjustments
	Balance as of December 31, 2013	$	11,745			$	(1,054	)		$	10,691
	Net current period change	(30,104		)	(1)	(3,572		)		(33,676		)
	Reclassification to interest expense from interest rate swaps	—				2,515				2,515
	Balance as of September 30, 2014	$	(18,359	)		$	(2,111	)		$	(20,470	)
	(1) During the first nine months of 2014, the U.S. dollar was generally stronger against the other currencies in which we transact business, primarily the Euro and British pound sterling.

Capital_And_Accumulated_Other_

Capital And Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2014
Partners' Capital Notes [Abstract]	'
Capital And Accumulated Other Comprehensive Income	'
	Capital and Accumulated Other Comprehensive Income
	(a) Redeemable Preferred Units
	7.375% Series H Cumulative Redeemable Preferred Units
	On March 26, 2014 and April 7, 2014, the Operating Partnership issued in the aggregate a total of 14,600,000 of its 7.375% series H cumulative redeemable preferred units, or series H preferred units, to Digital Realty Trust, Inc. (the General Partner) in conjunction with the General Partner’s issuance of an equivalent number of shares of its 7.375% series H cumulative redeemable preferred stock, or the series H preferred stock. Distributions are cumulative on the series H preferred units from the date of original issuance in the amount of $1.84375 per unit each year, which is equivalent to 7.375% of the $25.00 liquidation preference per unit. Distributions on the series H preferred units are payable quarterly in arrears. The first distribution payable on the series H preferred units on June 30, 2014 was a pro rata distribution from and including the original issue date to and including June 30, 2014 in the amount of $0.48655 per unit. The series H preferred units do not have a stated maturity date and are not subject to any sinking fund. The Operating Partnership is required to redeem the series H preferred units in the event that the General Partner redeems the series H preferred stock. The General Partner is not allowed to redeem the series H preferred stock prior to March 26, 2019 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after March 26, 2019, the General Partner may, at its option, redeem the series H preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series H preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series H preferred units will rank senior to the Operating Partnership’s common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series E cumulative redeemable preferred units, series F cumulative redeemable preferred units and series G 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.
	(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 $175.6 million and $124.1 million based on the closing market price of Digital Realty Trust, Inc.’s common stock on September 30, 2014 and December 31, 2013, respectively.
	(d) Distributions
	All distributions on the Operating Partnership’s units are at the discretion of Digital Realty Trust, Inc.’s board of directors. The Operating Partnership has declared and paid the following distributions on its common and preferred units for the nine months ended September 30, 2014 (in thousands, except for per unit data):
	Date distribution declared	Distribution		Series E				Series F				Series G		Series H			Common
		payment date		Preferred				Preferred				Preferred		Preferred			Units
				Units				Units				Units		Units
	February 11, 2014	March 31, 2014		$	5,031			$	3,023			$	3,672	$	—		$	109,378
	April 29, 2014	June 30, 2014		5,031				3,023				3,672		7,104		-1	115,008
	July 21, 2014	September 30, 2014		5,031				3,023				3,672		6,730			115,012
				$	15,093			$	9,069			$	11,016	$	13,834		$	339,398
	Annual rate of distribution per unit			$	1.75			$	1.656			$	1.469	$	1.844		$	3.32
	-1	Represents a pro rata distribution from and including the original issue date (March 26, 2014) to and including June 30, 2014.
	(e) Accumulated Other Comprehensive Income
	The accumulated balances for each item within other comprehensive income are as follows (in thousands):
		Foreign currency				Cash flow hedge				Accumulated other
		translation				adjustments				comprehensive income (loss)
		adjustments
	Balance as of December 31, 2013	$	10,235			$	(1,778	)		$	8,457
	Net current period change	(30,730		)	(1)	(3,647		)		(34,377		)
	Reclassification to interest expense from interest rate swaps	—				2,567				2,567
	Balance as of September 30, 2014	$	(20,495	)		$	(2,858	)		$	(23,353	)
	(1) During the first nine months of 2014, the U.S. dollar was generally stronger against the other currencies in which we transact business, primarily the Euro and British pound sterling.

Incentive_Plan

Incentive Plan	9 Months Ended
	Sep. 30, 2014
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 had 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, which description is incorporated herein by reference.
	As of September 30, 2014, 5,343,334 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 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 per share distributions on Digital Realty Trust, Inc. common stock. Initially, long-term incentive units do not have full parity with common units with respect to liquidating distributions. If such parity is reached, vested long-term incentive units may be converted into an equal number of common units of the Operating Partnership at any time, and thereafter enjoy all the rights of common units of the Operating Partnership, including redemption rights. For a discussion of how long-term incentive units reach parity with common units, see note 13(a) to our consolidated financial statements for the fiscal year ended December 31, 2013, included in our Annual Report on 10-K, as amended, for the year ended December 31, 2013.
	Below is a summary of our long-term incentive unit activity for the nine months ended September 30, 2014.
	Unvested Long-term Incentive Units	Units			Weighted-Average
					Grant Date Fair
					Value
	Unvested, beginning of period	440,951			$	62.42
	Granted	199,486			52.42
	Vested	(307,249	)		58.9
	Cancelled or expired	(24,380	)		64.13
	Unvested, end of period	308,808			59.32
	During the nine months ended September 30, 2013, certain employees were granted an aggregate of 95,316 long-term incentive units, which, in addition to a service condition, were subject to a performance condition that impacted the number of units which ultimately vested. The performance condition was based upon our achievement of the 2013 Core Funds From Operations, or CFFO, per share targets. Based on our 2013 CFFO per diluted share and unit, 75,105 of the 2013 long-term incentive units, net of forfeitures, satisfied the performance condition. 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 four years, the current vesting period of the long-term incentive units. We expense the fair value of awards that contain a performance condition using an accelerated method with each vesting tranche valued as a separate award.
	The expense recorded for the three months ended September 30, 2014 and 2013 related to long-term incentive units was approximately $1.5 million and $2.1 million, respectively, and approximately $11.3 million and $7.2 million for the nine months ended September 30, 2014 and 2013, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.3 million and $0.4 million for the three months ended September 30, 2014 and 2013, respectively, and approximately $1.1 million and $1.3 million for the nine months ended September 30, 2014 and 2013, respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $10.8 million and $12.9 million as of September 30, 2014 and December 31, 2013, respectively. We expect to recognize this unearned compensation over the next 2.2 years on a weighted-average basis.
	(b) 2014 Market Performance-Based Awards
	On February 11, 2014, the Compensation Committee of the Board of Directors of the Company approved the grant of market performance-based Class D Units of the Operating Partnership and market performance-based restricted stock units, or RSUs, covering shares of the Company’s common stock (collectively, the “awards”), under the Amended and Restated 2004 Incentive Award Plan to officers and employees of the Company. In March 2014 and April 2014, the Compensation Committee of the Board of Directors of the Company approved the grant of additional market performance-based Class D Units of the Operating Partnership to certain officers of the Company, under the Amended and Restated 2004 Incentive Award Plan and 2014 Incentive Plan, respectively.
	The awards, which were determined to contain a market condition, utilize total shareholder return, or TSR, over a three-year measurement period as the market performance metric. Awards will vest based on the Company’s TSR relative to the MSCI US REIT Index, or RMS, over a three-year market performance period, or the Market Performance Period, commencing in January 2014 (or, if earlier, ending on the date on which a change in control of the Company occurs), subject to continued services. Vesting with respect to the market condition is measured based on the difference between the Company’s TSR percentage and the TSR percentage of the RMS, or the RMS Relative Market Performance. In the event that the RMS Relative Market Performance during the Market Performance Period is achieved at the “threshold,” “target” or “high” level as set forth below, the awards will become vested as to the market condition with respect to the percentage of Class D units or RSUs, as applicable, set forth below:
	Level	RMS Relative	Market
		Market Performance	Performance
			Vesting
			Percentage
		< 0 basis points	0	%
	Threshold Level	0 points	25	%
	Target Level	325 basis points	50	%
	High Level	> 650 basis points	100	%
	If the RMS Relative Market Performance falls between the levels specified above, the percentage of the award that will vest with respect to the market condition will be determined using straight-line linear interpolation between such levels.
	Following the completion of the Market Performance Period, 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.
	Vesting will be accelerated, in full or on a pro rata basis, in the event of a change in control, termination of employment by the Company without cause, or termination of employment by the award recipient for good reason, death, disability or retirement. Although a change in control will truncate the performance period, RMS Relative Market Performance will still depend on actual performance.
	The fair value of the 2014 grant of awards was 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 valuation include expected stock price volatility of 33 percent and a risk-free interest rate of 0.67 percent. The valuation was performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium.
	As of September 30, 2014, 664,316 Class D Units and 248,026 market performance-based RSUs had been awarded to our executive officers and other employees. The number of units granted reflects the maximum number of Class D units or market performance-based RSUs, as applicable, which will become vested assuming the achievement of the highest level of RMS Relative Market Performance under the awards and, in the case of the Class D units, also includes dividend equivalent units. The fair value of these awards of approximately $17.4 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 September 30, 2014 was $11.1 million, net of cancellations. As of September 30, 2014, none of the above awards had vested. We recognized compensation expense related to these awards of approximately $0.8 million and $2.2 million in the three and nine months ended September 30, 2014, respectively. We capitalized amounts relating to compensation expense of employees directly engaged in construction and leasing activities of approximately $0.4 million and $1.0 million for the three and nine months ended September 30, 2014, respectively. If, at the end of the three-year performance period, the market condition is not met, at the end of the performance period, 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 period ended September 30, 2014:
		Period Ended
		September 30, 2014
		Shares			Weighted
					average exercise
					price
	Options outstanding, beginning of period	123,690			$	30.13
	Exercised	(16,134	)		14.71
	Cancelled / Forfeited	—			—
	Options outstanding, end of period	107,556			$	32.44
	Exercisable, end of period	107,556			$	32.44
	The following table summarizes information about stock options outstanding and exercisable as of September 30, 2014:
	Options outstanding and exercisable
	Exercise price	Number			Weighted-average		Weighted-average		Aggregate
		outstanding			remaining		exercise price		intrinsic value
					contractual  life
					(years)
	$12.00-13.02	20,204			0.08		$	12	$	1,017,878
	$20.37-28.09	17,000			1.14		21.28		698,730
	$33.18-41.73	70,352			2.55		41.01		1,503,436
	Total / Weighted-average	107,556			1.86		$	32.44	$	3,220,044
	(d) Restricted Stock
	Below is a summary of our restricted stock activity for the nine months ended September 30, 2014.
	Unvested Restricted Stock	Shares			Weighted-Average
					Grant Date Fair
					Value
	Unvested, beginning of period	255,081			$	63.35
	Granted	174,523			52.51
	Vested	(73,980	)		60.78
Cancelled or expired	(30,676	)		61.52
Unvested, end of period	324,948			58.29
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. We expense the fair value of awards that contain a performance condition using an accelerated method with each vesting tranche valued as a separate award.
During the nine months ended September 30, 2013, certain employees were granted an aggregate of 69,995 shares of restricted stock, which, in addition to a service condition, were subject to a performance condition that impacted the number of shares which ultimately vested. The performance condition was based upon our achievement of the 2013 CFFO per share targets. Upon evaluating the results of the performance condition, the final number of shares was determined and such shares vest based on satisfaction of the service conditions. Based on our 2013 CFFO per diluted share and unit, 50,805 shares of the 2013 restricted stock awards (net of forfeitures) satisfied the performance condition.
The expense recorded for the three months ended September 30, 2014 and 2013 related to grants of restricted stock was approximately $0.4 million and $0.8 million, respectively, and approximately $1.9 million and $2.2 million for the nine months ended September 30, 2014 and 2013, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.4 million and $0.7 million for the three months ended September 30, 2014 and 2013, respectively, and approximately $2.0 million and $1.9 million for the nine months ended September 30, 2014 and 2013, respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $11.7 million and $8.7 million as of September 30, 2014 and December 31, 2013, respectively. We expect to recognize this unearned compensation over the next 2.5 years on a weighted-average basis.

Derivative_Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments	'
	Derivative Instruments
	As of September 30, 2014 and December 31, 2013, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):
	Notional Amount										Fair Value at Significant Other
											Observable Inputs (Level 2)
	As of			As of			Type of	Strike	Effective Date	Expiration Date	As of			As of
	September 30,			December 31,			Derivative	Rate			September 30,			December 31,
	2014			2013							2014			2013
	Currently-paying contracts
	$	410,905	-1	$	410,905	-1	Swap	0.717	Various	Various	$	223		$	(76	)
	148,534		-2	150,040		-2	Swap	0.925	July 17, 2012	April 18, 2017	268			131
	559,439			560,945							491			55
	Forward-starting contracts
	150,000		-3	—			Forward-starting Swap	2.091	July 15, 2014	July 15, 2019	(1,516		)	—
	Total
	$	709,439		$	560,945						$	(1,025	)	$	55
	-1	Represents the U.S. dollar tranche of the unsecured term loan.
	-2	Represents a portion of the Singapore dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.78 to 1.00 SGD as of September 30, 2014 and $0.79 to 1.00 SGD as of December 31, 2013.
	-3	In January 2014, we entered into a forward-starting swap agreement with a notional amount of USD $150.0 million for a future debt issuance with a tenor of five years or greater. The forward-starting swap has a mandatory early termination date of January 15, 2015 to cash settle the swap.
	As of September 30, 2014, we estimate that an additional $5.3 million will be reclassified as an increase to interest expense during the twelve months ended September 30, 2015, when the hedged forecasted transactions impact earnings.

Fair_Value_Of_Instruments

Fair Value Of Instruments	9 Months Ended
	Sep. 30, 2014
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 condensed consolidated balance sheets, for which it is practicable to estimate fair value. Current accounting guidance requires the Company to disclose fair value information about all financial instruments, whether or not recognized in the balance sheets, for which it is practicable to estimate fair value.
	The Company’s disclosures of estimated fair value of financial instruments at September 30, 2014 and December 31, 2013 were determined using available market information and appropriate valuation methods. Considerable judgment is necessary to interpret market data and develop estimated fair value. The use of different market assumptions or estimation methods may have a material effect on the estimated fair value amounts.
	The carrying amounts for cash and cash equivalents, restricted cash, accounts and other receivables, accounts payable and other accrued liabilities, accrued dividends and distributions, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 14, the interest rate swaps are recorded at fair value.
	We calculate the fair value of our mortgage loans, unsecured term loan, unsecured senior notes and exchangeable senior debentures based on currently available market rates assuming the loans are outstanding through maturity and considering the collateral and other loan terms. In determining the current market rate for fixed rate debt, a market spread is added to the quoted yields on federal government treasury securities with similar maturity dates to our debt. The carrying value of our global revolving credit facility approximates fair value, due to the variability of interest rates.
	As of September 30, 2014 and December 31, 2013, the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured term loan, unsecured senior notes, exchangeable senior debentures and mortgage loans were as follows (in thousands):
		Categorization	As of September 30, 2014				As of December 31, 2013
		under the fair value
		hierarchy	Estimated Fair Value		Carrying Value		Estimated Fair Value		Carrying Value
	Global revolving credit facility (1)	Level 2	$	485,023	$	485,023	$	724,668	$	724,668
	Unsecured term loan (2)	Level 2	1,002,186		1,002,186		1,020,984		1,020,984
	Unsecured senior notes (3)(4)	Level 2	2,964,962		2,835,478		2,379,999		2,364,232
	Exchangeable senior debentures (3)	Level 2	—		—		336,847		266,400
	Mortgage loans (3)	Level 2	441,149		417,042		622,580		585,608
			$	4,893,320	$	4,739,729	$	5,085,078	$	4,961,892
	-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 ratings.
	-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 ratings.
	-3	Valuations for our unsecured senior notes and mortgage loans are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes, 2022 Notes, 2023 Notes and 2025 Notes and 2029 Debentures are valued based on quoted market prices.
	-4	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes, 2022 Notes, 2023 Notes and 2025 Notes are net of discount of $16,432 and $15,048 in the aggregate as of September 30, 2014 and December 31, 2013, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	(a) Contingent liabilities
	As part of the acquisition of 29A International Business Park, an asset acquisition in 2010, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined in the agreements for the acquisition. As of September 30, 2014, certain leases executed subsequent to purchase have caused an amount to become probable of payment and therefore approximately $12.8 million has been accrued in accounts payable and accrued liabilities and capitalized to buildings and improvements in the condensed consolidated balance sheet as of September 30, 2014. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $39.2 million based on the exchange rate as of September 30, 2014). The earnout contingency expires in November 2020.
	One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities were not permitted on specifically identified expansion space within the property until April 2014. From April 2014 through April 2017, the tenant has the right of first refusal on any third party’s bona fide offer to buy the adjacent land. If the tenant exercises their option, we may either construct and lease to the tenant an additional shell building on the expansion space at a stipulated rate of return on cost or sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease.
	As part of the acquisition of the Sentrum Portfolio in July 2012, 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 contingent consideration 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. At September 30, 2014, the fair value of the contingent consideration for the Sentrum Portfolio was £33.0 million (or approximately $53.5 million based on the exchange rate as of September 30, 2014) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. 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) during the nine months ended September 30, 2014. During the nine months ended September 30, 2013, we made earnout payments of approximately £16.9 million (or approximately $25.8 million based on the exchange rates as of the date of each payment). From the acquisition date through September 30, 2014, we have made earnout payments of approximately £23.1 million (or approximately $36.1 million based on the exchange rates as of the date of each payment). The impact of the change in fair value of contingent consideration for the Sentrum Portfolio on operating income was an increase of approximately $1.5 million and $0.9 million for the three months ended September 30, 2014 and 2013, respectively, and an increase of approximately $4.1 million and $13,000 for the nine months ended September 30, 2014 and 2013, respectively. The earn-out contingency expires in July 2015. This amount will be reassessed on a quarterly basis, with any changes being recognized in earnings. Increases or decreases in the fair value of the contingent consideration can result from changes in discount periods, discount rates and probabilities that contingencies will be met.
	(b) Construction Commitments
	Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements. From time to time in the normal course of our business, we enter into various construction contracts with third parties that may obligate us to make payments. At September 30, 2014, we had open commitments related to construction contracts of approximately $182.6 million.
	(c) Legal Proceedings
	Although the Company is involved in legal proceedings arising in the ordinary course of business, as of September 30, 2014, 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.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	On October 17, 2014, we completed the sale of our $17.1 million investment in a developer of data centers in the Southwestern U.S. and Mexico. The sale generated net proceeds of approximately $31.6 million, and we will recognize a gain on the sale of our investment of approximately $14.5 million in the fourth quarter of 2014.
	On November 4, 2014, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:
	Share / Unit Class	Series E		Series F		Series G		Series H		Common stock and
		Preferred Stock		Preferred Stock		Preferred Stock		Preferred Stock		common unit
		and Unit		and Unit		and Unit		and Unit
	Dividend and distribution amount	$	0.4375	$	0.414063	$	0.367188	$	0.460938	$	0.83
	Dividend and distribution payable date	December 31, 2014		December 31, 2014		December 31, 2014		December 31, 2014		January 15, 2015
	Dividend and distribution payable to holders of record on	December 15, 2014		December 15, 2014		December 15, 2014		December 15, 2014		December 15, 2014
	Annual equivalent rate of dividend and distribution	$	1.75	$	1.656	$	1.469	$	1.844	$	3.32

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Policy)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Principles Of Consolidation And Basis Of Presentation	'
	(a) Principles of Consolidation and Basis of Presentation
	The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.
	The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K, as amended, for the year ended December 31, 2013.
	The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:
	•	enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;
	•	eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and
	•	creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.
	There are a few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership and certain of its subsidiaries. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes.
	The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.
	The presentation of noncontrolling interests in operating partnership, stockholders’ equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.
	To help investors understand the significant differences between the Company and the Operating Partnership, these consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:
	•	condensed consolidated face financial statements; and
	•	the following notes to the condensed consolidated financial statements:
	•	Debt of the Company and Debt of the Operating Partnership;
	•	Income per Share and Income per Unit; and
	•	Equity and Accumulated Other Comprehensive Income, Net and Capital and Accumulated Other Comprehensive Income.
	In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.
Cash Equivalents	'
	(b) Cash Equivalents
	For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2014, cash equivalents consist of investments in money market instruments.
Investment In Unconsolidated Joint Ventures	'
	(c) 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.
Capitalization Of Costs	'
	(d) 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 three months ended September 30, 2014 and 2013, we capitalized interest of approximately $5.4 million and $6.9 million, respectively, and $15.6 million and $18.8 million during the nine months ended September 30, 2014 and 2013, respectively. During the three months ended September 30, 2014 and 2013, we capitalized amounts relating to compensation and other overhead expense of employees direct and incremental to construction and successful leasing activities of approximately $13.3 million and $9.7 million, respectively, and $37.2 million and $29.6 million during the nine months ended September 30, 2014 and 2013, respectively. Capitalized leasing costs of $37.1 million and $36.4 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2014 and 2013, respectively.
Share Based Compensation	'
	(e) 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 performance goals.
Income Taxes	'
	(f) Income Taxes
	Digital Realty Trust, Inc. has elected to be treated as a real estate investment trust (a “REIT”) for federal income tax purposes. As a REIT, Digital Realty Trust, Inc. generally is not required to pay federal corporate income tax to the extent taxable income is currently distributed to its stockholders. If Digital Realty Trust, Inc. fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.
	The Company is subject to foreign, state and local income taxes in the jurisdictions in which it conducts business. The Company’s U.S. consolidated taxable REIT subsidiary is 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 September 30, 2014 and December 31, 2013, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated income statements. For the three and nine months ended September 30, 2014 and 2013, we had no such interest or penalties. The tax year 2011 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.
Presentation Of Transactional-Based Taxes	'
	(g) 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.
Fee Income	'
	(h) 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.
	Contractor type revenue for long-term contracts is recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs. Otherwise, construction management revenue and expense is reflected net of third party costs. As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.
	Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.
Assets And Liabilities Measured At Fair Value	'
	(i) 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	'
	(j) 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	'
	(k) Management’s Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, contingent consideration, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.
Segment And Geographic Information	'
	(l) Segment and Geographic Information
	All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of real estate services provided to them are standardized throughout the portfolio. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.
	Operating revenues from properties in the United States were $314.9 million and $294.1 million and outside the United States were $97.3 million and $85.4 million for the three months ended September 30, 2014 and 2013, respectively. Operating revenues from properties in the United States were $915.7 million and $845.0 million and outside the United States were $288.6 million and $256.3 million for the nine months ended September 30, 2014 and 2013, respectively. We had long-lived assets located in the United States of $5.6 billion and $5.6 billion and outside the United States of $2.7 billion and $2.7 billion as of September 30, 2014 and December 31, 2013, respectively.
	Operating revenues from properties located in the United Kingdom were $55.1 million and $48.0 million, or 13.4% and 12.7% of total operating revenues, for the three months ended September 30, 2014 and 2013, respectively. Operating revenues from properties located in the United Kingdom were $164.5 million and $144.0 million, or 13.7% and 13.1% of total operating revenues, for the nine months ended September 30, 2014 and 2013, respectively. No other foreign country comprised more than 10% of total operating revenues for each of these periods. We had long-lived assets located in the United Kingdom of $1.8 billion and $1.8 billion, or 21.1% and 21.1% of total long-lived assets, as of September 30, 2014 and December 31, 2013, respectively. No other foreign country comprised more than 10% of total long-lived assets as of September 30, 2014 and December 31, 2013.
Reclassifications	'
	(m) Reclassifications
	Certain immaterial reclassifications to prior year amounts have been made to conform to the current year presentation. As of December 31, 2013, approximately $58.9 million was reclassified from security deposits and prepaid rents to accounts and other receivables. During the three and nine months ended September 30, 2013, $(0.9) million and $(13,000) were reclassified from rental property operating and maintenance expense to change in fair value of contingent consideration, respectively.
Recent Accounting Pronouncements	'
	(n) Recent Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-8, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360), Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which amends the requirements for reporting discontinued operations. Under ASU 2014-8, a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results when the component or group of components meets the criteria to be classified as held for sale or when the component or group of components is disposed of by sale or other than by sale. In addition, this ASU requires additional disclosures about both discontinued operations and the disposal of an individually significant component of an entity that does not qualify for discontinued operations presentation in the financial statements. As permitted by the standard, the Company has elected to early adopt the provisions of ASU 2014-8 as of January 1, 2014 and is applying the provisions prospectively.
	In May 2014, the FASB issued ASU No. 2014-9, Revenue from Contracts with Customers, a comprehensive new revenue recognition standard that supersedes most all existing revenue recognition guidance. This standard’s core principle is that a company will recognize revenue when it transfers goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods and services. However, leasing contracts, representing the major source of the Company’s revenues, are not within the scope of the new standard and will continue to be accounted for under existing standards. This new standard is effective for the Company for annual and interim periods beginning on January 1, 2017 with early adoption prohibited. The Company has not yet determined the effects on the condensed consolidated financial statements and related notes resulting from the adoption of this new standard.

Investments_In_Real_Estate_Tab

Investments In Real Estate (Tables)	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Schedule of real estate properties acquired	'
	We acquired the following real estate property during the nine months ended September 30, 2014:
	Location	Metropolitan Area	Date Acquired	Amount
				(in millions) (1)
	Crawley 2 (2)	London	September 16, 2014	$	23
	(1) Purchase price in U.S. dollars and excludes 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 vacant land which is not included in our operating property count.

Investment_In_Unconsolidated_J1

Investment In Unconsolidated Joint Ventures (Tables)	9 Months Ended
	Sep. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Summary Of Financial Information For Joint Ventures	'
	The following tables present summarized financial information for the joint ventures as of September 30, 2014 and December 31, 2013 and for the nine months ended September 30, 2014 and 2013 (in thousands):
		As of September 30, 2014										Nine Months Ended September 30, 2014
	2014	Net Investment		Total Assets		Debt		Total		Equity		Revenues		Property			Net		Net Income
		in Properties						Liabilities						Operating			Operating
														Expense			Income
	Total Unconsolidated Joint Ventures	$	845,132	$	956,107	$	461,919	$	578,515	$	377,592	$	71,882	$	(17,409	)	$	54,473	$	23,350
	Our investment in and share of equity in earnings of unconsolidated joint ventures									$	94,497								$	9,513
		As of December 31, 2013										Nine Months Ended September 30, 2013
	2013	Net Investment		Total Assets		Debt		Total		Equity		Revenues		Property			Net		Net Income
		in Properties						Liabilities						Operating			Operating
														Expense			Income
	Total Unconsolidated Joint Ventures	$	584,837	$	676,015	$	337,953	$	444,062	$	231,953	$	33,992	$	(9,305	)	$	24,687	$	13,072
	Our investment in and share of equity in earnings of unconsolidated joint ventures									$	70,504								$	6,839

Acquired_Intangible_Assets_And1

Acquired Intangible Assets And Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Acquired Intangible Assets And Liabilities [Abstract]	'
Summary Of Acquired Intangible Assets	'
	The following summarizes our acquired intangible assets (acquired in-place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of September 30, 2014 and December 31, 2013.
		Balance as of
	(Amounts in thousands)	30-Sep-14			31-Dec-13
	Acquired in-place lease value:
	Gross amount	$	709,044		$	725,458
	Accumulated amortization	(464,388		)	(423,549		)
	Net	$	244,656		$	301,909
	Acquired above-market leases:
	Gross amount	$	128,747		$	132,750
	Accumulated amortization	(86,270		)	(80,486		)
	Net	$	42,477		$	52,264
	Acquired below-market leases:
	Gross amount	$	285,291		$	291,638
	Accumulated amortization	(174,583		)	(161,369		)
	Net	$	110,708		$	130,269
Schedule Of Estimated Annual Amortization Of Below Market Leases	'
	Estimated annual amortization of acquired below-market leases, net of acquired above-market leases, for each of the five succeeding years and thereafter, commencing October 1, 2014 is as follows:
	(Amounts in thousands)
	Remainder of 2014	$	2,273
	2015	9,017
	2016	7,526
	2017	6,055
	2018	4,440
	Thereafter	38,920
	Total	$	68,231
Schedule Of Estimated Annual Amortization Of Acquired In Place Leases	'
	(Amounts in thousands)
	Remainder of 2014	$	12,631
	2015	41,459
	2016	33,051
	2017	28,352
	2018	25,943
	Thereafter	103,220
	Total	$	244,656

Debt_Of_The_Operating_Partners1

Debt Of The Operating Partnership (Tables) (Digital Realty Trust, L.P.)	9 Months Ended
	Sep. 30, 2014
Digital Realty Trust, L.P.	'
Debt Instrument [Line Items]	'
Summary Of Outstanding Indebtedness Of The Operating Partnership	'
	A summary of outstanding indebtedness of the Operating Partnership as of September 30, 2014 and December 31, 2013 is as follows (in thousands):
	Indebtedness	Interest Rate at September 30, 2014		Maturity Date		Principal Outstanding September 30, 2014				Principal Outstanding December 31, 2013
	Global revolving credit facility	Various	-1	Nov 3, 2017		$	485,023		-2	$	724,668		-2
	Unsecured term loan	Various	(3)(8)	Apr 16, 2017		1,002,186			-4	1,020,984			-4
	Unsecured senior notes:
	Prudential Shelf Facility:
	Series C	9.68%		Jan 6, 2016		25,000				25,000
	Series D	4.57%		Jan 20, 2015		50,000				50,000
	Series E	5.73%		Jan 20, 2017		50,000				50,000
	Series F	4.50%		Feb 3, 2015		17,000				17,000
	Total Prudential Shelf Facility					142,000				142,000
	Senior Notes:
	4.50% notes due 2015	4.50%		Jul 15, 2015		375,000				375,000
	5.875% notes due 2020	5.88%		Feb 1, 2020		500,000				500,000
	5.25% notes due 2021	5.25%		Mar 15, 2021		400,000				400,000
	3.625% notes due 2022	3.62%		Oct 1, 2022		300,000				300,000
	4.75% notes due 2023	4.75%		Oct 13, 2023		486,390			-9	—
	4.25% notes due 2025	4.25%		Jan 17, 2025		648,520			-9	662,280			-9
	Unamortized discounts					(16,432		)		(15,048		)
	Total senior notes, net of discount					2,693,478				2,222,232
	Total unsecured senior notes, net of discount					2,835,478				2,364,232
	Exchangeable senior debentures:
	5.50% exchangeable senior debentures due 2029	5.50%		Apr 15, 2029	-5	—				266,400
	Total exchangeable senior debentures					—				266,400
	Indebtedness	Interest Rate at September 30, 2014		Maturity Date		Principal Outstanding September 30, 2014				Principal Outstanding December 31, 2013
	Mortgage loans:
	Secured Term Debt (6)(7)	5.65%		Nov 11, 2014		$	—		-12	$	132,966
	200 Paul Avenue 1-4 (7)	5.74%		Oct 8, 2015		69,191				70,713
	2045 & 2055 Lafayette Street (7)	5.93%		Feb 6, 2017		62,836				63,623
	34551 Ardenwood Boulevard 1-4 (7)	5.95%		Nov 11, 2016		51,549				52,152
	1100 Space Park Drive (7)	5.89%		Dec 11, 2016		51,507				52,115
	600 West Seventh Street	5.80%		Mar 15, 2016		48,266				49,548
	150 South First Street (7)	6.30%		Feb 6, 2017		49,518				50,097
	2334 Lundy Place (7)	5.96%		Nov 11, 2016		37,493				37,930
	Cressex 1 (10)	5.68%		Oct 16, 2014	(13)	27,616			-9	28,583			-9
	636 Pierce Street	5.27%		Apr 15, 2023		—			-11	26,327
	Manchester Technopark (10)	5.68%		Oct 16, 2014	(13)	8,401			-9	8,695			-9
	8025 North Interstate 35	4.09%		Mar 6, 2016		6,122				6,314
	731 East Trade Street	8.22%		Jul 1, 2020		3,926				4,186
	Unamortized net premiums					617				2,359
	Total mortgage loans, net of premiums					417,042				585,608
	Total indebtedness					$	4,739,729			$	4,961,892
	_________________________________
	-1	The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 110 basis points, which is based on the current credit ratings of our long-term debt. An annual facility fee of 20 basis points, which is based on the 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 September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):
	Denomination of Draw	Balance as of September 30, 2014				Weighted-average			Balance as of December 31, 2013				Weighted-average
						interest rate							interest rate
	Floating Rate Borrowing (a)
	U.S. dollar ($)	$	115,000			1.25	%		$	466,000			1.27	%
	British pound sterling (£)	57,718			(c)	1.62	%		—				—	%
	Euro (€)	60,629			(c)	1.11	%		78,335			(d)	1.33	%
	Australian dollar (AUD)	75,574			(c)	3.75	%		67,212			(d)	3.7	%
	Hong Kong dollar (HKD)	77,165			(c)	1.32	%		57,390			(d)	1.31	%
	Japanese yen (JPY)	14,319			(c)	1.18	%		12,858			(d)	1.21	%
	Canadian dollar (CAD)	61,618			(c)	2.35	%		14,873			(d)	2.32	%
	Total	$	462,023			1.84	%		$	696,668			1.53	%
	Base Rate Borrowing (b)
	U.S. dollar ($)	$	23,000			3.35	%		$	28,000			3.35	%
	Total borrowings	$	485,023			1.91	%		$	724,668			1.6	%
	(a)	The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.
	(b)	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.
	(c)	Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.
	(d)	Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.
-3	Interest rates are based on our current senior unsecured debt ratings and are 120 basis points over the applicable index for floating rate advances. Two six-month extensions are available, which we may exercise if certain conditions are met.
-4	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):
Denomination of Draw	Balance as of September 30, 2014				Weighted-average			Balance as of December 31, 2013				Weighted-average
					interest rate							interest rate
U.S. dollar ($)	$	410,905			1.36	%	(b)	$	410,905			1.37	%	(d)
Singapore dollar (SGD)	179,103			(a)	1.42	%	(b)	180,918			(c)	1.4	%	(d)
British pound sterling (£)	196,056			(a)	1.75	%		200,216			(c)	1.72	%
Euro (€)	125,678			(a)	1.21	%		136,743			(c)	1.43	%
Australian dollar (AUD)	90,444			(a)	3.84	%		92,202			(c)	3.78	%
Total	$	1,002,186			1.65	%	(b)	$	1,020,984			1.67	%	(d)
(a)	Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.
(b)	As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.
(c)	Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.
(d)	As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
-5	The 2029 Debentures were redeemed in April 2014.
-6	This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.
-7	The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.
-8	We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar and Singapore dollar tranches of the unsecured term loan. See note 14 for further information.
-9	Based on exchange rate of $1.62 to £1.00 as of September 30, 2014 and $1.66 to £1.00 as of December 31, 2013.
-10	These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.
-11	On March 5, 2014, we contributed this property to our unconsolidated joint venture with an investment fund managed by Prudential Real Estate Investors which was formed in September 2013. Also on March 5, 2014, the joint venture assumed the debt and repaid in full the outstanding balance of $26.1 million on the mortgage loan.
-12	These loans were repaid in full in September 2014.
-13	These loans were repaid in full in October 2014.
Schedule Of Balances And Foreign Currency Translation Revolving Credit Facilities	'
	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):
	Denomination of Draw	Balance as of September 30, 2014				Weighted-average			Balance as of December 31, 2013				Weighted-average
						interest rate							interest rate
	Floating Rate Borrowing (a)
	U.S. dollar ($)	$	115,000			1.25	%		$	466,000			1.27	%
	British pound sterling (£)	57,718			(c)	1.62	%		—				—	%
	Euro (€)	60,629			(c)	1.11	%		78,335			(d)	1.33	%
	Australian dollar (AUD)	75,574			(c)	3.75	%		67,212			(d)	3.7	%
	Hong Kong dollar (HKD)	77,165			(c)	1.32	%		57,390			(d)	1.31	%
	Japanese yen (JPY)	14,319			(c)	1.18	%		12,858			(d)	1.21	%
	Canadian dollar (CAD)	61,618			(c)	2.35	%		14,873			(d)	2.32	%
	Total	$	462,023			1.84	%		$	696,668			1.53	%
	Base Rate Borrowing (b)
	U.S. dollar ($)	$	23,000			3.35	%		$	28,000			3.35	%
	Total borrowings	$	485,023			1.91	%		$	724,668			1.6	%
	(a)	The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.
	(b)	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.
	(c)	Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.
	(d)	Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.
	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):
	Denomination of Draw	Balance as of September 30, 2014				Weighted-average			Balance as of December 31, 2013				Weighted-average
						interest rate							interest rate
	U.S. dollar ($)	$	410,905			1.36	%	(b)	$	410,905			1.37	%	(d)
	Singapore dollar (SGD)	179,103			(a)	1.42	%	(b)	180,918			(c)	1.4	%	(d)
	British pound sterling (£)	196,056			(a)	1.75	%		200,216			(c)	1.72	%
	Euro (€)	125,678			(a)	1.21	%		136,743			(c)	1.43	%
	Australian dollar (AUD)	90,444			(a)	3.84	%		92,202			(c)	3.78	%
	Total	$	1,002,186			1.65	%	(b)	$	1,020,984			1.67	%	(d)
	(a)	Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.
	(b)	As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.
	(c)	Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.
	(d)	As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
Schedule Of Debt Maturities And Principal Maturities	'
	The table below summarizes our debt maturities and principal payments as of September 30, 2014 (in thousands):
		Global Revolving				Unsecured				Prudential				Senior Notes			Mortgage			Total
		Credit Facility(1)				Term Loan (1)				Shelf Facility							Loans (2)			Debt
	Remainder of 2014	$	—			$	—			$	—			$	—		$	38,188	(3)	$	38,188
	2015	—				—				67,000				375,000			75,493			517,493
	2016	—				—				25,000				—			191,979			216,979
	2017	485,023				1,002,186				50,000				—			108,395			1,645,604
	2018	—				—				—				—			593			593
	Thereafter	—				—				—				2,334,910			1,777			2,336,687
	Subtotal	$	485,023			$	1,002,186			$	142,000			$	2,709,910		$	416,425		$	4,755,544
	Unamortized discount	—				—				—				(16,432		)	—			(16,432		)
	Unamortized premium	—				—				—				—			617			617
	Total	$	485,023			$	1,002,186			$	142,000			$	2,693,478		$	417,042		$	4,739,729
	-1	Subject to two six-month extension options exercisable by us. The bank group is obligated to grant the extension options provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility and the unsecured term loan, as applicable.
	-2	Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2014, we provided partial letter of credit support with respect to approximately $36.0 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2014).
	-3	Mortgage loans in the amount of approximately $36.0 million were paid in full in October 2014.

Income_Per_Share_Tables

Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
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):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Net income available to common stockholders--basic	$	109,314		$	138,872		$	185,010	$	228,606
	Add: Interest and amortization of debt issuance costs on 2029 Debentures	—			4,050			—		—
	Net income available to common stockholders--diluted	$	109,314		$	142,922		$	185,010	$	228,606
	Weighted average shares outstanding—basic	135,492,618			128,427,444			132,635,894		127,771,419
	Potentially dilutive common shares:
	Stock options	52,629			58,150			46,649		64,767
	Unvested incentive units	129,024			132,195			61,122		119,583
	2014 market performance-based awards	272,262			—			109,301		—
	Effect of dilutive 2029 Debentures	—			6,683,976			—		—
	Weighted average shares outstanding—diluted	135,946,533			135,301,765			132,852,966		127,955,769
	Income per share:
	Basic	$	0.81		$	1.08		$	1.39	$	1.79
	Diluted	$	0.8		$	1.06		$	1.39	$	1.79
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:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014		2013
	Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	2,815,512		2,549,749			2,745,730		2,515,964
	Potentially dilutive 2029 Debentures	—		—			2,617,790		6,628,489
	Potentially dilutive Series D Cumulative Convertible Preferred Stock	—		—			—		629,389
	Potentially dilutive Series E Cumulative Redeemable Preferred Stock	4,673,322		5,251,059			5,136,112		4,853,976
	Potentially dilutive Series F Cumulative Redeemable Preferred Stock	2,963,810		3,330,210			3,257,310		3,078,381
	Potentially dilutive Series G Cumulative Redeemable Preferred Stock	4,052,525		4,553,517			4,453,839		2,918,921
	Potentially dilutive Series H Cumulative Redeemable Preferred Stock	5,938,553		—			4,111,306		—
		20,443,722		15,684,535			22,322,087		20,625,120

Income_Per_Unit_Tables

Income Per Unit (Tables)	9 Months Ended
	Sep. 30, 2014
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):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Net income available to common stockholders--basic	$	109,314		$	138,872		$	185,010	$	228,606
	Add: Interest and amortization of debt issuance costs on 2029 Debentures	—			4,050			—		—
	Net income available to common stockholders--diluted	$	109,314		$	142,922		$	185,010	$	228,606
	Weighted average shares outstanding—basic	135,492,618			128,427,444			132,635,894		127,771,419
	Potentially dilutive common shares:
	Stock options	52,629			58,150			46,649		64,767
	Unvested incentive units	129,024			132,195			61,122		119,583
	2014 market performance-based awards	272,262			—			109,301		—
	Effect of dilutive 2029 Debentures	—			6,683,976			—		—
	Weighted average shares outstanding—diluted	135,946,533			135,301,765			132,852,966		127,955,769
	Income per share:
	Basic	$	0.81		$	1.08		$	1.39	$	1.79
	Diluted	$	0.8		$	1.06		$	1.39	$	1.79
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:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014		2013
	Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.	2,815,512		2,549,749			2,745,730		2,515,964
	Potentially dilutive 2029 Debentures	—		—			2,617,790		6,628,489
	Potentially dilutive Series D Cumulative Convertible Preferred Stock	—		—			—		629,389
	Potentially dilutive Series E Cumulative Redeemable Preferred Stock	4,673,322		5,251,059			5,136,112		4,853,976
	Potentially dilutive Series F Cumulative Redeemable Preferred Stock	2,963,810		3,330,210			3,257,310		3,078,381
	Potentially dilutive Series G Cumulative Redeemable Preferred Stock	4,052,525		4,553,517			4,453,839		2,918,921
	Potentially dilutive Series H Cumulative Redeemable Preferred Stock	5,938,553		—			4,111,306		—
		20,443,722		15,684,535			22,322,087		20,625,120
Digital Realty Trust, L.P.	'
Summary Of Basic And Diluted Earnings Per Share	'
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Net income available to common unitholders--basic	$	111,586		$	141,629		$	188,848	$	233,123
	Add: Interest and amortization of debt issuance costs on 2029 Debentures	—			4,050			—		—
	Net income available to common unitholders--diluted	$	111,586		$	145,679		$	188,848	$	233,123
	Weighted average units outstanding—basic	138,308,130			130,977,193			135,381,624		130,287,383
	Potentially dilutive common units:
	Stock options	52,629			58,150			46,649		64,767
	Unvested incentive units	129,024			132,195			61,122		119,583
	2014 market performance-based awards	272,262			—			109,301		—
	Effect of dilutive 2029 Debentures	—			6,683,976			—		—
	Weighted average units outstanding—diluted	138,762,045			137,851,514			135,598,696		130,471,733
	Income per unit:
	Basic	$	0.81		$	1.08		$	1.39	$	1.79
	Diluted	$	0.8		$	1.06		$	1.39	$	1.79
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:
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014		2013
	Potentially dilutive 2029 Debentures	—		—			2,617,790		6,628,489
	Potentially dilutive Series D Cumulative Convertible Preferred Units	—		—			—		629,389
	Potentially dilutive Series E Cumulative Redeemable Preferred Units	4,673,322		5,251,059			5,136,112		4,853,976
	Potentially dilutive Series F Cumulative Redeemable Preferred Units	2,963,810		3,330,210			3,257,310		3,078,381
	Potentially dilutive Series G Cumulative Redeemable Preferred Units	4,052,525		4,553,517			4,453,839		2,918,921
	Potentially dilutive Series H Cumulative Redeemable Preferred Units	5,938,553		—			4,111,306		—
		17,628,210		13,134,786			19,576,357		18,109,156

Equity_And_Accumulated_Other_C1

Equity And Accumulated Other Comprehensive Income, Net (Tables)	9 Months Ended
	Sep. 30, 2014
Equity And Accumulated Other Comprehensive Income, Net [Abstract]	'
Ownership Interest In The Operating Partnership	'
	The following table shows the ownership interests in the Operating Partnership as of September 30, 2014 and December 31, 2013:
		30-Sep-14						31-Dec-13
		Number of units			Percentage of total			Number of units			Percentage of total
	Digital Realty Trust, Inc.	135,503,184			97.7	%		128,455,350			97.7	%
	Noncontrolling interests consist of:
	Common units held by third parties	1,478,814			1.1			1,491,814			1.2
	Incentive units held by employees and directors (see note 13)	1,645,372			1.2			1,475,207			1.1
		138,627,370			100	%		131,422,371			100	%
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 nine months ended September 30, 2014:
		Common Units			Incentive Units			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)	(13,000	)		—			(13,000	)
	Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1)	—			(4,941	)		(4,941	)
	Cancellation of incentive units held by employees and directors	—			(24,380	)		(24,380	)
	Grant of incentive units to employees and directors	—			199,486			199,486
	As of September 30, 2014	1,478,814			1,645,372			3,124,186
	-1	This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.
Schedule Of Dividends/Distributions	'
	We have declared and paid the following dividends on our common and preferred stock for the nine months ended September 30, 2014 (in thousands, except per share data):
	Date dividend declared	Dividend		Series E				Series F				Series G		Series H			Common
		payment date		Preferred				Preferred				Preferred		Preferred			Stock
				Stock				Stock				Stock		Stock
	February 11, 2014	March 31, 2014		$	5,031			$	3,023			$	3,672	$	—		$	106,743
	April 29, 2014	June 30, 2014		5,031				3,023				3,672		7,104		-1	112,357
	July 21, 2014	September 30, 2014		$	5,031			$	3,023			$	3,672	$	6,730		$	112,465
				$	15,093			$	9,069			$	11,016	$	13,834		$	331,565
	Annual rate of dividend per share			$	1.75			$	1.656			$	1.469	$	1.844		$	3.32
	-1	Represents a pro rata dividend from and including the original issue date (March 26, 2014) to and including June 30, 2014.
Schedule Of Accumulated Other Comprehensive Income, Net	'
	The accumulated balances for each item within other comprehensive income, net are as follows (in thousands):
		Foreign currency				Cash flow hedge				Accumulated other
		translation				adjustments				comprehensive income (loss), net
		adjustments
	Balance as of December 31, 2013	$	11,745			$	(1,054	)		$	10,691
	Net current period change	(30,104		)	(1)	(3,572		)		(33,676		)
	Reclassification to interest expense from interest rate swaps	—				2,515				2,515
	Balance as of September 30, 2014	$	(18,359	)		$	(2,111	)		$	(20,470	)

Capital_And_Accumulated_Other_1

Capital And Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2014
Schedule Of Dividends/Distributions	'
	We have declared and paid the following dividends on our common and preferred stock for the nine months ended September 30, 2014 (in thousands, except per share data):
	Date dividend declared	Dividend		Series E				Series F				Series G		Series H			Common
		payment date		Preferred				Preferred				Preferred		Preferred			Stock
				Stock				Stock				Stock		Stock
	February 11, 2014	March 31, 2014		$	5,031			$	3,023			$	3,672	$	—		$	106,743
	April 29, 2014	June 30, 2014		5,031				3,023				3,672		7,104		-1	112,357
	July 21, 2014	September 30, 2014		$	5,031			$	3,023			$	3,672	$	6,730		$	112,465
				$	15,093			$	9,069			$	11,016	$	13,834		$	331,565
	Annual rate of dividend per share			$	1.75			$	1.656			$	1.469	$	1.844		$	3.32
	-1	Represents a pro rata dividend from and including the original issue date (March 26, 2014) to and including June 30, 2014.
Schedule Of Accumulated Other Comprehensive Income, Net	'
	The accumulated balances for each item within other comprehensive income, net are as follows (in thousands):
		Foreign currency				Cash flow hedge				Accumulated other
		translation				adjustments				comprehensive income (loss), net
		adjustments
	Balance as of December 31, 2013	$	11,745			$	(1,054	)		$	10,691
	Net current period change	(30,104		)	(1)	(3,572		)		(33,676		)
	Reclassification to interest expense from interest rate swaps	—				2,515				2,515
	Balance as of September 30, 2014	$	(18,359	)		$	(2,111	)		$	(20,470	)
Digital Realty Trust, L.P.	'
Schedule Of Dividends/Distributions	'
	Date distribution declared	Distribution		Series E				Series F				Series G		Series H			Common
		payment date		Preferred				Preferred				Preferred		Preferred			Units
				Units				Units				Units		Units
	February 11, 2014	March 31, 2014		$	5,031			$	3,023			$	3,672	$	—		$	109,378
	April 29, 2014	June 30, 2014		5,031				3,023				3,672		7,104		-1	115,008
	July 21, 2014	September 30, 2014		5,031				3,023				3,672		6,730			115,012
				$	15,093			$	9,069			$	11,016	$	13,834		$	339,398
	Annual rate of distribution per unit			$	1.75			$	1.656			$	1.469	$	1.844		$	3.32
	-1	Represents a pro rata distribution from and including the original issue date (March 26, 2014) to and including June 30, 2014.
Schedule Of Accumulated Other Comprehensive Income, Net	'
		Foreign currency				Cash flow hedge				Accumulated other
		translation				adjustments				comprehensive income (loss)
		adjustments
	Balance as of December 31, 2013	$	10,235			$	(1,778	)		$	8,457
	Net current period change	(30,730		)	(1)	(3,647		)		(34,377		)
	Reclassification to interest expense from interest rate swaps	—				2,567				2,567
	Balance as of September 30, 2014	$	(20,495	)		$	(2,858	)		$	(23,353	)
	(1) During the first nine months of 2014, the U.S. dollar was generally stronger against the other currencies in which we transact business, primarily the Euro and British pound sterling.

Incentive_Plan_Tables

Incentive Plan (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary Of Long-Term Incentive Unit Activity	'
	Below is a summary of our long-term incentive unit activity for the nine months ended September 30, 2014.
	Unvested Long-term Incentive Units	Units		Weighted-Average
				Grant Date Fair
				Value
	Unvested, beginning of period	440,951		$	62.42
	Granted	199,486		52.42
	Vested	(307,249	)	58.9
	Cancelled or expired	(24,380	)	64.13
	Unvested, end of period	308,808		59.32
Market Performance Based Awards	'
	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 bel
Summary Of Incentive Award Plan's Stock Option	'
	The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the period ended September 30, 2014:
		Period Ended
		September 30, 2014
		Shares		Weighted
				average exercise
				price
	Options outstanding, beginning of period	123,690		$	30.13
	Exercised	(16,134	)	14.71
	Cancelled / Forfeited	—		—
	Options outstanding, end of period	107,556		$	32.44
	Exercisable, end of period	107,556		$	32.44
Summary Of Stock Options Outstanding And Exercisable	'
	The following table summarizes information about stock options outstanding and exercisable as of September 30, 2014:
	Options outstanding and exercisable
	Exercise price	Number		Weighted-average		Weighted-average		Aggregate
		outstanding		remaining		exercise price		intrinsic value
				contractual  life
				(years)
	$12.00-13.02	20,204		0.08		$	12	$	1,017,878
	$20.37-28.09	17,000		1.14		21.28		698,730
	$33.18-41.73	70,352		2.55		41.01		1,503,436
	Total / Weighted-average	107,556		1.86		$	32.44	$	3,220,044
Summary Of Restricted Stock Activity	'
	Below is a summary of our restricted stock activity for the nine months ended September 30, 2014.
	Unvested Restricted Stock	Shares		Weighted-Average
				Grant Date Fair
				Value
	Unvested, beginning of period	255,081		$	63.35
	Granted	174,523		52.51
	Vested	(73,980	)	60.78
	Cancelled or expired	(30,676	)	61.52
	Unvested, end of period	324,948		58.29

Derivative_Instruments_Tables

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule Of Outstanding Derivative Instruments	'
	As of September 30, 2014 and December 31, 2013, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):
	Notional Amount										Fair Value at Significant Other
											Observable Inputs (Level 2)
	As of			As of			Type of	Strike	Effective Date	Expiration Date	As of			As of
	September 30,			December 31,			Derivative	Rate			September 30,			December 31,
	2014			2013							2014			2013
	Currently-paying contracts
	$	410,905	-1	$	410,905	-1	Swap	0.717	Various	Various	$	223		$	(76	)
	148,534		-2	150,040		-2	Swap	0.925	July 17, 2012	April 18, 2017	268			131
	559,439			560,945							491			55
	Forward-starting contracts
	150,000		-3	—			Forward-starting Swap	2.091	July 15, 2014	July 15, 2019	(1,516		)	—
	Total
	$	709,439		$	560,945						$	(1,025	)	$	55
	-1	Represents the U.S. dollar tranche of the unsecured term loan.
	-2	Represents a portion of the Singapore dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.78 to 1.00 SGD as of September 30, 2014 and $0.79 to 1.00 SGD as of December 31, 2013.
	-3	In January 2014, we entered into a forward-starting swap agreement with a notional amount of USD $150.0 million for a future debt issuance with a tenor of five years or greater. The forward-starting swap has a mandatory early termination date of January 15, 2015 to cash settle the swap.

Fair_Value_Of_Instruments_Tabl

Fair Value Of Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Estimated Fair Value And Carrying Amounts	'
	As of September 30, 2014 and December 31, 2013, the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured term loan, unsecured senior notes, exchangeable senior debentures and mortgage loans were as follows (in thousands):
		Categorization	As of September 30, 2014				As of December 31, 2013
		under the fair value
		hierarchy	Estimated Fair Value		Carrying Value		Estimated Fair Value		Carrying Value
	Global revolving credit facility (1)	Level 2	$	485,023	$	485,023	$	724,668	$	724,668
	Unsecured term loan (2)	Level 2	1,002,186		1,002,186		1,020,984		1,020,984
	Unsecured senior notes (3)(4)	Level 2	2,964,962		2,835,478		2,379,999		2,364,232
	Exchangeable senior debentures (3)	Level 2	—		—		336,847		266,400
	Mortgage loans (3)	Level 2	441,149		417,042		622,580		585,608
			$	4,893,320	$	4,739,729	$	5,085,078	$	4,961,892
	-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 ratings.
	-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 ratings.
	-3	Valuations for our unsecured senior notes and mortgage loans are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes, 2022 Notes, 2023 Notes and 2025 Notes and 2029 Debentures are valued based on quoted market prices.
	-4	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes, 2022 Notes, 2023 Notes and 2025 Notes are net of discount of $16,432 and $15,048 in the aggregate as of September 30, 2014 and December 31, 2013, respectively.

Subsequent_Events_Tables

Subsequent Events (Tables)	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Schedule Of Dividends Declared And Distributions Per Unit	'
	On November 4, 2014, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:
	Share / Unit Class	Series E		Series F		Series G		Series H		Common stock and
		Preferred Stock		Preferred Stock		Preferred Stock		Preferred Stock		common unit
		and Unit		and Unit		and Unit		and Unit
	Dividend and distribution amount	$	0.4375	$	0.414063	$	0.367188	$	0.460938	$	0.83
	Dividend and distribution payable date	December 31, 2014		December 31, 2014		December 31, 2014		December 31, 2014		January 15, 2015
	Dividend and distribution payable to holders of record on	December 15, 2014		December 15, 2014		December 15, 2014		December 15, 2014		December 15, 2014
	Annual equivalent rate of dividend and distribution	$	1.75	$	1.656	$	1.469	$	1.844	$	3.32

Organization_And_Description_O1

Organization And Description Of Business (Narrative) (Details)	Sep. 30, 2014
	property
Organization and Description of Business [Line Items]	'
Number of properties owned	131
Common Interest	'
Organization and Description of Business [Line Items]	'
Ownership percentage in the Operating Partnership	97.70%
Preferred Interest	'
Organization and Description of Business [Line Items]	'
Ownership percentage in the Operating Partnership	100.00%
Joint Ventures	'
Organization and Description of Business [Line Items]	'
Number of properties held as investments in unconsolidated joint ventures	14
North America	'
Organization and Description of Business [Line Items]	'
Number of properties owned	105
Europe	'
Organization and Description of Business [Line Items]	'
Number of properties owned	21
Australia	'
Organization and Description of Business [Line Items]	'
Number of properties owned	3
Asia	'
Organization and Description of Business [Line Items]	'
Number of properties owned	2

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

segment

United States

United States

United States

United States

United States

Outside The United States

Outside The United States

Outside The United States

Outside The United States

Outside The United States

United Kingdom

United Kingdom

United Kingdom

United Kingdom

United Kingdom

Sales

Sales

Sales

Sales

Long-Lived Assets

Long-Lived Assets

Scenario, Previously Reported

Summary Of Significant Accounting Policies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid Rent

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$58,900,000

Change in fair value of contingent consideration

-1,465,000

-943,000

-4,102,000

-13,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period in which short-term investment become cash equivalents

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest capitalized

5,400,000

6,900,000

15,600,000

18,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compensation costs, leasing and construction activities

13,300,000

9,700,000

37,200,000

29,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash flows from capitalized leasing costs

'

'

37,100,000

36,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total operating revenues

412,186,000

379,456,000

1,204,222,000

1,101,328,000

314,900,000

294,100,000

915,700,000

845,000,000

'

97,300,000

85,400,000

288,600,000

256,300,000

'

55,100,000

48,000,000

164,500,000

144,000,000

'

'

'

'

'

'

'

'

Long-lived assets

'

'

'

'

$5,600,000,000

'

$5,600,000,000

'

$5,600,000,000

$2,700,000,000

'

$2,700,000,000

'

$2,700,000,000

$1,800,000,000

'

$1,800,000,000

'

$1,800,000,000

'

'

'

'

'

'

'

Concentration risk

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13.40%

12.70%

13.70%

13.10%

21.10%

21.10%

'

Investments_In_Real_Estate_Nar

Investments In Real Estate (Narrative) (Details)	3 Months Ended		9 Months Ended			0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Apr. 07, 2014	Apr. 07, 2014	Sep. 30, 2014	Sep. 30, 2014
	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	6 Braham Street	6 Braham Street	Midwest and Northeast Regions	Held-for-sale
						USD ($)	GBP (£)	property	USD ($)
									property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'
Consideration received on sale of property	'	'	'	'	'	$41,500,000	£ 25,000,000	'	'
Sale proceeds after costs and various tenant prepayments	'	'	'	'	'	37,500,000	22,600,000	'	'
Net gain on sale of discontinued operation	'	'	'	'	'	15,900,000	'	'	'
Impairment of investments in real estate	12,500,000	0	12,500,000	0	'	'	'	'	'
Number of properties	'	'	'	'	'	'	'	2	5
Assets	9,722,007,000	'	9,722,007,000	'	9,626,830,000	'	'	'	143,800,000
Total liabilities	$5,618,447,000	'	$5,618,447,000	'	$5,980,318,000	'	'	'	$4,500,000

Investments_In_Real_Estate_Sch

Investments In Real Estate (Schedule Of Real Estate Property Acquisitions) (Details) (Crawley, USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Crawley	'
Business Acquisition [Line Items]	'
Metropolitan Area	'London	[1]
Date Acquired	16-Sep-14	[1]
Payment for property acquired	$23	[1],[2]
[1]	Represents vacant land which is not included in our operating property count.
[2]	Purchase price in U.S. dollars and excludes 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.

Investment_In_Unconsolidated_J2

Investment In Unconsolidated Joint Ventures (Narrative) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Mar. 05, 2014

Sep. 30, 2014

Mar. 05, 2014

Sep. 09, 2014

Sep. 09, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 09, 2014

Sep. 09, 2014

2001 Sixth Avenue

33 Chun Choi Street (Hong Kong)

Prudential

Prudential

636 Pierce Street

43915 Devin Shafron Drive

Secured Debt

Secured Debt

Secured Debt

Secured Debt

Interest Rate Swap

property

43915 Devin Shafron Drive

43915 Devin Shafron Drive

43915 Devin Shafron Drive

43915 Devin Shafron Drive

Secured Debt

extension

43915 Devin Shafron Drive

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership percentage in joint ventures

'

'

50.00%

20.00%

'

'

'

20.00%

'

'

'

'

'

Number of properties

'

'

'

'

'

10

'

'

'

'

'

'

'

Gross Value

'

'

'

'

'

'

$40,400,000

$185,500,000

'

'

'

'

'

Transaction costs

'

'

'

'

'

'

'

2,100,000

'

'

'

'

'

Property subject to debt

'

'

'

'

'

'

26,100,000

'

'

'

'

'

'

Proceeds received from contribution of property

'

'

'

'

'

'

11,400,000

'

167,500,000

'

'

'

'

Share of net assets less book value percentage

'

'

'

'

'

'

80.00%

80.00%

'

'

'

'

'

Investment in unconsolidated joint ventures

94,497,000

70,504,000

'

'

'

'

14,300,000

'

'

'

'

'

'

Principal outstanding

'

'

'

'

'

'

23,000,000

'

'

'

'

'

'

Net proceeds from joint venture

'

'

'

'

'

'

17,500,000

'

'

'

'

'

'

Realized gain

'

'

'

'

164,800,000

'

1,900,000

'

'

93,500,000

'

'

'

Senior face amount

'

'

'

'

'

'

'

'

'

'

'

$102,000,000

$51,000,000

Debt instrument, term

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

Investment, loan to value ratio

'

'

'

'

'

'

'

'

'

'

'

55.00%

'

Number of extension options

'

'

'

'

'

'

'

'

'

'

2

'

'

Debt instrument, extension term

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

Interest rate basis spread

'

'

'

'

'

'

'

'

'

'

2.25%

'

'

Investment_In_Unconsolidated_J3

Investment In Unconsolidated Joint Ventures (Summary Of Financial Information For Joint Ventures) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'	'	'	'	'
Net investment in properties	'	'	$845,132	'	$584,837
Total assets	956,107	'	956,107	'	676,015
Debt	461,919	'	461,919	'	337,953
Total liabilities	578,515	'	578,515	'	444,062
Equity (deficit)	377,592	'	377,592	'	231,953
Investment in unconsolidated joint ventures	94,497	'	94,497	'	70,504
Revenues	'	'	71,882	33,992	'
Property operating expense	'	'	-17,409	-9,305	'
Net operating income	'	'	54,473	24,687	'
Net income (loss)	'	'	23,350	13,072	'
Investment in and share of net income (loss)	$3,455	$2,174	$9,513	$6,839	'

Acquired_Intangible_Assets_And2

Acquired Intangible Assets And Liabilities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Amortization of below market leases	$2,400,000	$2,700,000	$7,700,000	$8,800,000
Expected average remaining lives of acquired below market leases	'	'	'2338 days	'
Amortization of intangible assets	'	'	64,541,000	56,981,000
Acquired Above-Market Lease Value	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Expected average remaining lives	'	'	'1461 days	'
Acquired-In Place Lease Value	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Expected average remaining lives	'	'	'2228 days	'
Amortization of intangible assets	$16,500,000	$15,700,000	$50,000,000	$46,000,000
Weighted average remaining contractual life for acquired leases excluding renewals or extensions	'	'	'1717 days	'

Acquired_Intangible_Assets_And3

Acquired Intangible Assets And Liabilities (Summary Of Acquired Intangible Assets) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Net	$244,656	'
Below-market lease, gross amount	285,291	291,638
Below-market lease, accumulated amortization	-174,583	-161,369
Below-market lease, net	110,708	130,269
Acquired-In Place Lease Value	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross amount	709,044	725,458
Accumulated amortization	-464,388	-423,549
Net	244,656	301,909
Acquired Above-Market Lease Value	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross amount	128,747	132,750
Accumulated amortization	-86,270	-80,486
Net	$42,477	$52,264

Acquired_Intangible_Assets_And4

Acquired Intangible Assets And Liabilities (Schedule Of Estimated Annual Amortization Of Below Market Leases) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Below-market lease, net	$110,708	$130,269
Below-Market Leases, Net of Above-Market Leases [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Below-market leases, Remainder of 2014	2,273	'
Below-market leases, 2015	9,017	'
Below-market leases, 2016	7,526	'
Below-market leases, 2017	6,055	'
Below-market leases, 2018	4,440	'
Below-market leases, Thereafter	38,920	'
Below-market lease, net	$68,231	'

Acquired_Intangible_Assets_And5

Acquired Intangible Assets And Liabilities (Schedule Of Estimated Annual Amortization Of Acquired In Place Leases) (Details) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Acquired Intangible Assets And Liabilities [Abstract]	'
Remainder of 2014	$12,631
2015	41,459
2016	33,051
2017	28,352
2018	25,943
Thereafter	103,220
Net	$244,656

Debt_Of_The_Company_Details

Debt Of The Company (Details) (Senior Notes)	9 Months Ended
	Sep. 30, 2014
4.50% Notes Due 2015	'
Debt Instrument [Line Items]	'
Interest rate	4.50%
Maturity date	'2015
5.875% Notes Due 2020	'
Debt Instrument [Line Items]	'
Interest rate	5.88%
Maturity date	'2020
5.25% Notes Due 2021	'
Debt Instrument [Line Items]	'
Interest rate	5.25%
Maturity date	'2021
3.625% Notes Due 2022	'
Debt Instrument [Line Items]	'
Interest rate	3.63%
Maturity date	'2022
4.75% Notes Due 2023	'
Debt Instrument [Line Items]	'
Interest rate	4.75%
Maturity date	'2023
4.25% Notes Due 2025	'
Debt Instrument [Line Items]	'
Interest rate	4.25%
Maturity date	'2025

Debt_Of_The_Operating_Partners2

Debt Of The Operating Partnership (Summary of Outstanding Indebtedness) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Apr. 01, 2014

Sep. 30, 2014

Apr. 20, 2009

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

In Thousands, unless otherwise specified

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

4.50% Notes Due 2015

5.875% Notes Due 2020

5.25% Notes Due 2021

3.625% Notes Due 2022

4.75% Notes Due 2023

4.25% Notes Due 2025

4.75% Notes Due 2023

4.75% Notes Due 2023

5.50% Exchangeable Senior Debentures Due 2029

5.50% Exchangeable Senior Debentures Due 2029

Global revolving credit facility

Global revolving credit facility

Unsecured term loan

Unsecured term loan

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Prudential Shelf Facility

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Exchangeable Senior Debentures

Exchangeable Senior Debentures

Exchangeable Senior Debentures

Exchangeable Senior Debentures

Series C

Series C

Series D

Series D

Series E

Series E

Series F

Series F

4.50% Notes Due 2015

4.50% Notes Due 2015

5.875% Notes Due 2020

5.875% Notes Due 2020

5.25% Notes Due 2021

5.25% Notes Due 2021

3.625% Notes Due 2022

3.625% Notes Due 2022

4.75% Notes Due 2023

4.75% Notes Due 2023

4.25% Notes Due 2025

4.25% Notes Due 2025

5.50% Exchangeable Senior Debentures Due 2029

5.50% Exchangeable Senior Debentures Due 2029

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate

'

'

4.50%

5.88%

5.25%

3.63%

4.75%

4.25%

'

'

'

4.75%

'

5.50%

'

'

'

'

'

'

9.68%

'

4.57%

'

5.73%

'

4.50%

'

'

'

4.50%

'

5.88%

'

5.25%

'

3.63%

'

4.75%

'

4.25%

'

'

'

5.50%

'

Maturity date

'

'

'

'

'

'

'

'

'

'

13-Oct-23

'

15-Apr-29

'

3-Nov-17

'

16-Apr-17

'

'

'

6-Jan-16

'

20-Jan-15

'

20-Jan-17

'

3-Feb-15

'

'

'

15-Jul-15

'

1-Feb-20

'

15-Mar-21

'

1-Oct-22

'

13-Oct-23

'

17-Jan-25

'

'

'

15-Apr-29

[1]

'

Principal outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$485,023

[2],[3]

$724,668

[2],[3]

$1,002,186

[4]

$1,020,984

[4]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subtotal

'

'

'

'

'

'

'

'

4,755,544

'

'

'

'

'

485,023

[5]

'

1,002,186

[5]

'

142,000

142,000

25,000

25,000

50,000

50,000

50,000

50,000

17,000

17,000

2,709,910

'

375,000

375,000

500,000

500,000

400,000

400,000

300,000

300,000

486,390

[6]

0

648,520

[6]

662,280

[6]

'

'

'

'

Unamortized discounts

'

'

'

'

'

'

'

'

-16,432

'

-3,000

'

'

'

0

[5]

'

0

[5]

'

0

'

'

'

'

'

'

'

'

'

-16,432

-15,048

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unsecured senior notes, net of discount

2,835,478

2,364,232

'

'

'

'

'

'

2,835,478

2,364,232

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,693,478

2,222,232

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exchangeable senior debentures net of discount

$0

$266,400

'

'

'

'

'

'

$0

$266,400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0

$266,400

$0

$266,400

[1]

The 2029 Debentures were redeemed in April 2014.

[2]

The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.

[3]

Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rateBalance as of December 31, 2013 Weighted-averageinterest rateFloating Rate Borrowing (a)U.S. dollar ($)$115,000 1.25%$466,000 1.27%British pound sterling (£)57,718(c)1.62% ——%Euro (€)60,629(c)1.11%78,335(d) 1.33%Australian dollar (AUD)75,574(c)3.75%67,212(d) 3.70%Hong Kong dollar (HKD)77,165(c)1.32%57,390(d) 1.31%Japanese yen (JPY)14,319(c)1.18%12,858(d) 1.21%Canadian dollar (CAD)61,618(c)2.35%14,873(d) 2.32%Total$462,023 1.84%$696,668 1.53%Base Rate Borrowing (b) U.S. dollar ($)$23,000 3.35%$28,000 3.35%Total borrowings$485,023 1.91%$724,668 1.60%(a)The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.(b)The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.(c)Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.(d)Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.

[4]

Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rate Balance as of December 31, 2013 Weighted-averageinterest rate U.S. dollar ($)$410,905 1.36%(b) $410,905 1.37%(d) Singapore dollar (SGD)179,103(a) 1.42%(b) 180,918(c) 1.40%(d) British pound sterling (£)196,056(a) 1.75%200,216(c) 1.72%Euro (€)125,678(a) 1.21%136,743(c) 1.43%Australian dollar (AUD)90,444(a) 3.84%92,202(c) 3.78%Total$1,002,186 1.65%(b) $1,020,984 1.67%(d) (a)Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.(b)As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.(c)Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.(d)As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.

[5]

Subject to two six-month extension options exercisable by us. The bank group is obligated to grant the extension options provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility and the unsecured term loan, as applicable.

[6]

Based on exchange rate of $1.62 to £1.00 as of September 30, 2014 and $1.66 to £1.00 as of December 31, 2013.

Debt_Of_The_Operating_Partners3

Debt Of The Operating Partnership (Mortgage Loans) (Details)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

USD ($)

USD ($)

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

Digital Realty Trust, L.P.

USD ($)

USD ($)

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

Mortgage Loans

USD ($)

USD ($)

Secured Term Debt

Secured Term Debt

200 Paul Avenue

200 Paul Avenue

2045 & 2055 Lafayette Street

2045 & 2055 Lafayette Street

34551 Ardenwood Boulevard 1-4

34551 Ardenwood Boulevard 1-4

1100 Space Park Drive

1100 Space Park Drive

600 West Seventh Street

600 West Seventh Street

150 South First Street

150 South First Street

2334 Lundy Place

2334 Lundy Place

Cressex 1

Cressex 1

636 Pierce Street

636 Pierce Street

Manchester Technopark

Manchester Technopark

Manchester Technopark

8025 North Interstate 35

8025 North Interstate 35

731 East Trade Street

731 East Trade Street

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

loan

property

property

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate at period end

'

'

'

'

'

'

5.65%

[1],[2]

'

5.74%

[1]

'

5.93%

[1]

'

5.95%

[1]

'

5.89%

[1]

'

5.80%

[1]

'

6.30%

[1]

'

5.96%

[1]

'

5.68%

[3]

'

5.27%

'

5.68%

[3]

5.68%

[3]

'

4.09%

'

8.22%

'

Maturity date

'

'

'

'

'

'

11-Nov-14

[1],[2]

'

8-Oct-15

[1]

'

6-Feb-17

[1]

'

11-Nov-16

[1]

'

11-Dec-16

[1]

'

15-Mar-16

[1]

'

6-Feb-17

[1]

'

11-Nov-16

[1]

'

16-Oct-14

[3],[4]

'

15-Apr-23

'

16-Oct-14

[3],[4]

16-Oct-14

[3],[4]

'

6-Mar-16

'

1-Jul-20

'

Mortgage loans, net of premiums

$417,042,000

$585,608,000

$417,042,000

$585,608,000

'

'

$0

[1],[2],[5]

$132,966,000

[1],[2]

$69,191,000

[1]

$70,713,000

[1]

$62,836,000

[1]

$63,623,000

[1]

$51,549,000

[1]

$52,152,000

[1]

$51,507,000

[1]

$52,115,000

[1]

$48,266,000

[1]

$49,548,000

[1]

$49,518,000

[1]

$50,097,000

[1]

$37,493,000

[1]

$37,930,000

[1]

$27,616,000

[3],[6]

$28,583,000

[3],[6]

$0

[7]

$26,327,000

$8,401,000

[3],[6]

'

$8,695,000

[3],[6]

$6,122,000

$6,314,000

$3,926,000

$4,186,000

Unamortized premium

'

'

617,000

'

617,000

[8]

2,359,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total indebtedness

'

'

4,739,729,000

4,961,892,000

417,042,000

[8]

585,608,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loans on real estate, number

'

'

'

'

'

'

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of properties

'

'

'

'

'

'

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

2

'

'

'

'

'

Letter of credit security amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,800,000

'

'

'

'

'

Repayments of assumed debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$26,100,000

'

'

'

'

'

'

'

'

[1]

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

[2]

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

[3]

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

[4]

These loans were repaid in full in October 2014.

[5]

These loans were repaid in full in September 2014.

[6]

Based on exchange rate of $1.62 to £1.00 as of September 30, 2014 and $1.66 to £1.00 as of December 31, 2013.

[7]

On March 5, 2014, we contributed this property to our unconsolidated joint venture with an investment fund managed by Prudential Real Estate Investors which was formed in September 2013. Also on March 5, 2014, the joint venture assumed the debt and repaid in full the outstanding balance of $26.1 million on the mortgage loan.

[8]

Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2014, we provided partial letter of credit support with respect to approximately $36.0 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2014).

Debt_Of_The_Operating_Partners4

Debt Of The Operating Partnership (Outstanding Indebtedness - Global Revolving Credit Facility) (Details) (Digital Realty Trust, L.P., USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
	extension
GBP	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	1.62		1.66
EUR	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	1.26		1.37
AUD	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.87		0.89
Global revolving credit facility	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	$485,023	[1],[2]	$724,668	[1],[2]
Weighted-average interest rate	1.91%	[1]	1.60%	[1]
Interest rate basis spread	1.10%		'
Basis rate for unused portion of the credit facility	0.20%		'
Number of extension options	2		'
Revolving credit facility commitments extension	'6 months		'
Global revolving credit facility | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	462,023	[3]	696,668	[3]
Weighted-average interest rate	1.84%	[3]	1.53%	[3]
Interest rate basis spread	11000.00%		'
Commitment fee percentage	2000.00%		'
Global revolving credit facility | Base Rate	'		'
Debt Instrument [Line Items]	'		'
Interest rate basis spread	0.10%		'
Global revolving credit facility | Prime Rate	'		'
Debt Instrument [Line Items]	'		'
Interest rate basis spread	0.10%		'
Global revolving credit facility | USD | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	115,000	[3]	466,000	[3]
Weighted-average interest rate	1.25%	[3]	1.27%	[3]
Global revolving credit facility | USD | Base Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	23,000	[1]	28,000	[1]
Weighted-average interest rate	3.35%	[1]	3.35%	[1]
Global revolving credit facility | USD | Prime Rate	'		'
Debt Instrument [Line Items]	'		'
Interest rate basis spread	1000.00%		'
Global revolving credit facility | GBP	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	1.62		1.66
Global revolving credit facility | GBP | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	57,718	[3],[4]	0	[3]
Weighted-average interest rate	1.62%	[3]	0.00%	[3]
Global revolving credit facility | EUR	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	1.26		1.37
Global revolving credit facility | EUR | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	60,629	[3],[4]	78,335	[3],[5]
Weighted-average interest rate	1.11%	[3]	1.33%	[3]
Global revolving credit facility | AUD	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.87		0.89
Global revolving credit facility | AUD | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	75,574	[3],[4]	67,212	[3],[5]
Weighted-average interest rate	3.75%	[3]	3.70%	[3]
Global revolving credit facility | HKD	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.13		0.13
Global revolving credit facility | HKD | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	77,165	[3],[4]	57,390	[3],[5]
Weighted-average interest rate	1.32%	[3]	1.31%	[3]
Global revolving credit facility | JPY	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.01		0.01
Global revolving credit facility | JPY | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	14,319	[3],[4]	12,858	[3],[5]
Weighted-average interest rate	1.18%	[3]	1.21%	[3]
Global revolving credit facility | CAD	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.89		0.94
Global revolving credit facility | CAD | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	$61,618	[3],[4]	$14,873	[3],[5]
Weighted-average interest rate	2.35%	[3]	2.32%	[3]
[1]	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.
[2]	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rateBalance as of December 31, 2013 Weighted-averageinterest rateFloating Rate Borrowing (a)U.S. dollar ($)$115,000 1.25%$466,000 1.27%British pound sterling (£)57,718(c)1.62% ——%Euro (€)60,629(c)1.11%78,335(d) 1.33%Australian dollar (AUD)75,574(c)3.75%67,212(d) 3.70%Hong Kong dollar (HKD)77,165(c)1.32%57,390(d) 1.31%Japanese yen (JPY)14,319(c)1.18%12,858(d) 1.21%Canadian dollar (CAD)61,618(c)2.35%14,873(d) 2.32%Total$462,023 1.84%$696,668 1.53%Base Rate Borrowing (b) U.S. dollar ($)$23,000 3.35%$28,000 3.35%Total borrowings$485,023 1.91%$724,668 1.60%(a)The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.(b)The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.(c)Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.(d)Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.
[3]	The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.
[4]	Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.
[5]	Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.

Debt_Of_The_Operating_Partners5

Debt Of The Operating Partnership (Outstanding Indebtedness - Unsecured Term Loan) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
	extension
SGD	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.78		0.79
Digital Realty Trust, L.P. | GBP	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	1.62		1.66
Digital Realty Trust, L.P. | EUR	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	1.26		1.37
Digital Realty Trust, L.P. | AUD	'		'
Debt Instrument [Line Items]	'		'
Exchange rate	0.87		0.89
Digital Realty Trust, L.P. | Unsecured term loan	'		'
Debt Instrument [Line Items]	'		'
Interest rate basis spread	1.20%		'
Principal outstanding	$1,002,186	[1]	$1,020,984	[1]
Weighted-average interest rate	1.65%	[2]	1.67%	[3]
Number of extension options	2		'
Revolving credit facility commitments extension	'6 months		'
Digital Realty Trust, L.P. | Unsecured term loan | Floating Rate	'		'
Debt Instrument [Line Items]	'		'
Interest rate basis spread	12000.00%		'
Number of extension options	2		'
Revolving credit facility commitments extension	'6 months		'
Digital Realty Trust, L.P. | Unsecured term loan | Interest Rate Swap	'		'
Debt Instrument [Line Items]	'		'
Weighted-average interest rate	1.99%		2.00%
Digital Realty Trust, L.P. | Unsecured term loan | USD	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	410,905		410,905
Weighted-average interest rate	1.36%	[2]	1.37%	[3]
Digital Realty Trust, L.P. | Unsecured term loan | USD | Interest Rate Swap	'		'
Debt Instrument [Line Items]	'		'
Weighted-average interest rate	1.92%		1.92%
Digital Realty Trust, L.P. | Unsecured term loan | SGD	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	179,103	[4]	180,918	[5]
Weighted-average interest rate	1.42%	[2]	1.40%	[3]
Digital Realty Trust, L.P. | Unsecured term loan | SGD | Interest Rate Swap	'		'
Debt Instrument [Line Items]	'		'
Weighted-average interest rate	2.00%		2.00%
Digital Realty Trust, L.P. | Unsecured term loan | GBP	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	196,056	[4]	200,216	[5]
Weighted-average interest rate	1.75%		1.72%
Digital Realty Trust, L.P. | Unsecured term loan | EUR	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	125,678	[4]	136,743	[5]
Weighted-average interest rate	1.21%		1.43%
Digital Realty Trust, L.P. | Unsecured term loan | AUD	'		'
Debt Instrument [Line Items]	'		'
Principal outstanding	$90,444	[4]	$92,202	[5]
Weighted-average interest rate	3.84%		3.78%
[1]	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rate Balance as of December 31, 2013 Weighted-averageinterest rate U.S. dollar ($)$410,905 1.36%(b) $410,905 1.37%(d) Singapore dollar (SGD)179,103(a) 1.42%(b) 180,918(c) 1.40%(d) British pound sterling (£)196,056(a) 1.75%200,216(c) 1.72%Euro (€)125,678(a) 1.21%136,743(c) 1.43%Australian dollar (AUD)90,444(a) 3.84%92,202(c) 3.78%Total$1,002,186 1.65%(b) $1,020,984 1.67%(d) (a)Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.(b)As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.(c)Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.(d)As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
[2]	As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.
[3]	As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
[4]	Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.
[5]	Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.

Debt_Of_The_Operating_Partners6

Debt Of The Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) (Digital Realty Trust, L.P., USD $)	9 Months Ended
	Sep. 30, 2014		Dec. 31, 2013		Aug. 15, 2013	Aug. 14, 2013
	extension
Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Credit facility, maximum borrowing capacity	'		'		$1,000,000,000	$750,000,000
Maturity date	16-Apr-17		'		'	'
Number of extension options	2		'		'	'
Revolving credit facility commitments extension	'6 months		'		'	'
Interest rate basis spread	1.20%		'		'	'
Weighted-average interest rate	1.65%	[1]	1.67%	[2]	'	'
Principal outstanding	1,002,186,000	[3]	1,020,984,000	[3]	'	'
Global revolving credit facility	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Credit facility, maximum borrowing capacity	'		'		2,000,000,000	1,800,000,000
Maturity date	3-Nov-17		'		'	'
Number of extension options	2		'		'	'
Revolving credit facility commitments extension	'6 months		'		'	'
Base rate percentage	3.35%		'		'	'
Interest rate basis spread	1.10%		'		'	'
Basis rate for unused portion of the credit facility	0.20%		'		'	'
Weighted-average interest rate	1.91%	[4]	1.60%	[4]	'	'
Capitalized financing costs related to global revolving facilities	18,000,000		'		'	'
Principal outstanding	485,023,000	[4],[5]	724,668,000	[4],[5]	'	'
Letter of credit security amount	23,000,000		'		'	'
Global revolving credit facility | Base Rate	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Interest rate basis spread	0.10%		'		'	'
Global revolving credit facility | Prime Rate	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Interest rate basis spread	0.10%		'		'	'
Accordian Feature | Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Credit facility, maximum borrowing capacity	'		'		2,550,000,000	'
USD | Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Weighted-average interest rate	1.36%	[1]	1.37%	[2]	'	'
Principal outstanding	410,905,000		410,905,000		'	'
USD | Global revolving credit facility | Base Rate	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Weighted-average interest rate	3.35%	[4]	3.35%	[4]	'	'
Principal outstanding	23,000,000	[4]	28,000,000	[4]	'	'
USD | Global revolving credit facility | Prime Rate	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Interest rate basis spread	1000.00%		'		'	'
GBP | Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Weighted-average interest rate	1.75%		1.72%		'	'
Principal outstanding	196,056,000	[6]	200,216,000	[7]	'	'
EUR | Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Weighted-average interest rate	1.21%		1.43%		'	'
Principal outstanding	125,678,000	[6]	136,743,000	[7]	'	'
SGD | Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Weighted-average interest rate	1.42%	[1]	1.40%	[2]	'	'
Principal outstanding	179,103,000	[6]	180,918,000	[7]	'	'
AUD | Unsecured term loan	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Weighted-average interest rate	3.84%		3.78%		'	'
Principal outstanding	$90,444,000	[6]	$92,202,000	[7]	'	'
[1]	As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.
[2]	As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
[3]	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rate Balance as of December 31, 2013 Weighted-averageinterest rate U.S. dollar ($)$410,905 1.36%(b) $410,905 1.37%(d) Singapore dollar (SGD)179,103(a) 1.42%(b) 180,918(c) 1.40%(d) British pound sterling (£)196,056(a) 1.75%200,216(c) 1.72%Euro (€)125,678(a) 1.21%136,743(c) 1.43%Australian dollar (AUD)90,444(a) 3.84%92,202(c) 3.78%Total$1,002,186 1.65%(b) $1,020,984 1.67%(d) (a)Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.(b)As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.(c)Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.(d)As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.
[4]	The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.
[5]	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rateBalance as of December 31, 2013 Weighted-averageinterest rateFloating Rate Borrowing (a)U.S. dollar ($)$115,000 1.25%$466,000 1.27%British pound sterling (£)57,718(c)1.62% ——%Euro (€)60,629(c)1.11%78,335(d) 1.33%Australian dollar (AUD)75,574(c)3.75%67,212(d) 3.70%Hong Kong dollar (HKD)77,165(c)1.32%57,390(d) 1.31%Japanese yen (JPY)14,319(c)1.18%12,858(d) 1.21%Canadian dollar (CAD)61,618(c)2.35%14,873(d) 2.32%Total$462,023 1.84%$696,668 1.53%Base Rate Borrowing (b) U.S. dollar ($)$23,000 3.35%$28,000 3.35%Total borrowings$485,023 1.91%$724,668 1.60%(a)The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points, which is based on the credit ratings of our long-term debt.(b)The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points, which is based on the credit ratings of our long-term debt.(c)Based on exchange rates of $1.62 to £1.00, $1.26 to €1.00, $0.87 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.89 to 1.00 CAD, respectively, as of September 30, 2014.(d)Based on exchange rates of $1.37 to €1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD, respectively, as of December 31, 2013.
[6]	Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.
[7]	Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.

Debt_Of_The_Operating_Partners7

Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) (Unsecured term loan, Digital Realty Trust, L.P., USD $)	9 Months Ended
	Sep. 30, 2014		Dec. 31, 2013		Aug. 15, 2013	Aug. 14, 2013
	extension
Debt Instrument [Line Items]	'		'		'	'
Credit facility, maximum borrowing capacity	'		'		$1,000,000,000	$750,000,000
Maturity date	16-Apr-17		'		'	'
Number of extension options	2		'		'	'
Revolving credit facility commitments extension	'6 months		'		'	'
Interest rate basis spread	1.20%		'		'	'
Principal outstanding	1,002,186,000	[1]	1,020,984,000	[1]	'	'
Capitalized financing costs	8,400,000		'		'	'
Accordian Feature	'		'		'	'
Debt Instrument [Line Items]	'		'		'	'
Credit facility, maximum borrowing capacity	'		'		$2,550,000,000	'
[1]	Balances as of September 30, 2014 and December 31, 2013 are as follows (balances, in thousands):Denomination of DrawBalance as of September 30, 2014 Weighted-averageinterest rate Balance as of December 31, 2013 Weighted-averageinterest rate U.S. dollar ($)$410,905 1.36%(b) $410,905 1.37%(d) Singapore dollar (SGD)179,103(a) 1.42%(b) 180,918(c) 1.40%(d) British pound sterling (£)196,056(a) 1.75%200,216(c) 1.72%Euro (€)125,678(a) 1.21%136,743(c) 1.43%Australian dollar (AUD)90,444(a) 3.84%92,202(c) 3.78%Total$1,002,186 1.65%(b) $1,020,984 1.67%(d) (a)Based on exchange rates of $0.78 to 1.00 SGD, $1.62 to £1.00, $1.26 to €1.00 and $0.87 to 1.00 AUD, respectively, as of September 30, 2014.(b)As of September 30, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 1.99% (Total). See Note 14 for further discussion on interest rate swaps.(c)Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.(d)As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.

Debt_Of_The_Operating_Partners8

Debt Of The Operating Partnership (Exchangeable Senior Debentures) (Narrative) (Details) (5.50% Exchangeable Senior Debentures Due 2029, Digital Realty Trust, L.P., USD $)	0 Months Ended			9 Months Ended
In Millions, except Share data, unless otherwise specified	Jul. 11, 2014	Apr. 18, 2014	Dec. 11, 2013	Sep. 30, 2014	Apr. 20, 2009
5.50% Exchangeable Senior Debentures Due 2029 | Digital Realty Trust, L.P.	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'
Issuance date	'	'	'	20-Apr-09	'
Senior face amount	'	'	'	'	$266.40
Maturity date	'	'	'	15-Apr-29	'
Interest rate	'	'	'	'	5.50%
Debt issuance cost	'	'	'	7.8	'
Amortization period	'	'	'	'5 years	'
Exchangeable debenture exchange rate, shares	'	'	'	0.0232558	'
Reference dividend rate, per share	'	'	'	$0.33	'
Exchangeable debenture exchange rate, shares, adjusted	'	'	0.025549	25.788	'
Issuance of restricted shares in exchange for principal amount	134,974	'	'	6,734,938	'
Amount of principal exchanged for shares	'	'	'	261.2	'
Amount of principal redeemed when holders did not exercise their option	$5.20	'	'	'	'
Percentage of principal amount redeemed	'	100.00%	'	'	'

Debt_Of_The_Operating_Partners9

Debt Of The Operating Partnership (Senior Notes) (Narrative) (Details) (Digital Realty Trust, L.P.)	Sep. 30, 2014	Sep. 30, 2014	Apr. 01, 2014	Apr. 01, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Apr. 01, 2014
	USD ($)	4.75% Notes Due 2023	4.75% Notes Due 2023	4.75% Notes Due 2023	4.75% Notes Due 2023	4.75% Notes Due 2023	GBP	GBP	GBP
		USD ($)	USD ($)	GBP (£)	Minimum	Secured Debt	USD ($)	USD ($)	4.75% Notes Due 2023
						Maximum			USD ($)
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'	'
Notes issuance date	'	1-Apr-14	'	'	'	'	'	'	'
Senior face amount	'	'	$498,900,000	£ 300,000,000	'	'	'	'	'
Exchange rate	'	'	'	'	'	'	1.62	1.66	1.66
Interest rate	'	'	4.75%	4.75%	'	'	'	'	'
Maturity date	'	13-Oct-23	'	'	'	'	'	'	'
Unamortized discount	16,432,000	3,000,000	'	'	'	'	'	'	'
Debt issuance cost	'	5,000,000	'	'	'	'	'	'	'
Net proceeds from issuance of debt	'	$490,900,000	'	'	'	'	'	'	'
Leverage ratio	'	'	'	'	'	60.00%	'	'	'
Interest coverage ratio	'	'	'	'	150.00%	'	'	'	'
Covenant compliance, unemcumbered assets to principal amount of debt percentage	'	150.00%	'	'	'	'	'	'	'

Recovered_Sheet1

Debt Of The Operating Partnership (Schedule Of Debt Maturities And Principal Maturities) (Details) (Digital Realty Trust, L.P., USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Oct. 31, 2014

Global revolving credit facility

Unsecured term loan

Prudential Shelf Facility

Prudential Shelf Facility

Senior Notes

Senior Notes

Mortgage Loans

Mortgage Loans

Mortgage Loans

extension

extension

Subsequent Event

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Remainder of 2014

$38,188,000

'

$0

[1]

$0

[1]

$0

'

$0

'

$38,188,000

[2],[3]

'

'

2015

517,493,000

'

0

[1]

0

[1]

67,000,000

'

375,000,000

'

75,493,000

[2]

'

'

2016

216,979,000

'

0

[1]

0

[1]

25,000,000

'

0

'

191,979,000

[2]

'

'

2017

1,645,604,000

'

485,023,000

[1]

1,002,186,000

[1]

50,000,000

'

0

'

108,395,000

[2]

'

'

2018

593,000

'

0

[1]

0

[1]

0

'

0

'

593,000

[2]

'

'

Thereafter

2,336,687,000

'

0

[1]

0

[1]

0

'

2,334,910,000

'

1,777,000

[2]

'

'

Subtotal

4,755,544,000

'

485,023,000

[1]

1,002,186,000

[1]

142,000,000

142,000,000

2,709,910,000

'

416,425,000

[2]

'

'

Unamortized discounts

-16,432,000

'

0

[1]

0

[1]

0

'

-16,432,000

-15,048,000

0

[2]

'

'

Unamortized premium

617,000

'

0

[1]

0

[1]

0

'

0

'

617,000

[2]

2,359,000

'

Total Indebtedness

4,739,729,000

4,961,892,000

485,023,000

[1]

1,002,186,000

[1]

142,000,000

'

2,693,478,000

'

417,042,000

[2]

585,608,000

'

Number of extension options

'

'

2

2

'

'

'

'

'

'

'

Revolving credit facility commitments extension

'

'

'6 months

'6 months

'

'

'

'

'

'

'

Partial letter of credit

'

'

'

'

'

'

'

'

36,000,000

'

'

Repayments of debt

'

'

'

'

'

'

'

'

'

'

$36,000,000

[2],[3]

[1]

Subject to two six-month extension options exercisable by us. The bank group is obligated to grant the extension options provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility and the unsecured term loan, as applicable.

[2]

Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2014, we provided partial letter of credit support with respect to approximately $36.0 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2014).

[3]

Mortgage loans in the amount of approximately $36.0 million were paid in full in October 2014.

Income_Per_Share_Summary_Of_Ba

Income Per Share (Summary Of Basic And Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Net income available to common stockholders	$109,314	$138,872	$185,010	$228,606
Net Income (Loss) Available to Common Stockholders, Diluted	$109,314	$142,922	$185,010	$228,606
Weighted average shares outstanding—basic	135,492,618	128,427,444	132,635,894	127,771,419
2014 market performance-based awards	'	'	'	0
Weighted average shares/units outstanding-diluted	135,946,533	135,301,765	132,852,966	127,955,769
Basic	$0.81	$1.08	$1.39	$1.79
Diluted	$0.80	$1.06	$1.39	$1.79

Income_Per_Share_Schedule_Of_A

Income Per Share (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	20,443,722	15,684,535	22,322,087	20,625,120
Weighted Average Of Operating Partnership Common Units Not Owned By Us	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	2,815,512	2,549,749	2,745,730	2,515,964
Potentially Dilutive 2029 Debentures	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	0	0	2,617,790	6,628,489
Series D Cumulative Redeemable Preferred Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	0	0	0	629,389
Series E Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	4,673,322	5,251,059	5,136,112	4,853,976
Series F Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	2,963,810	3,330,210	3,257,310	3,078,381
Series G Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	4,052,525	4,553,517	4,453,839	2,918,921
Series H Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	5,938,553	0	4,111,306	0

Income_Per_Unit_Summary_Of_Bas

Income Per Unit (Summary Of Basic And Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income available to common unitholders	$109,314	$138,872	$185,010	$228,606
Net Income (Loss) Available to Common Stockholders, Diluted	109,314	142,922	185,010	228,606
Weighted average shares outstanding—basic	135,492,618	128,427,444	132,635,894	127,771,419
2014 market performance-based awards	'	'	'	0
Weighted average shares/units outstanding-diluted	135,946,533	135,301,765	132,852,966	127,955,769
Basic	$0.81	$1.08	$1.39	$1.79
Diluted	$0.80	$1.06	$1.39	$1.79
Digital Realty Trust, L.P.	'	'	'	'
Net income available to common unitholders	111,586	141,629	188,848	233,123
Interest on Convertible Debt, Net of Tax	'	4,050	'	'
Net Income (Loss) Available to Common Stockholders, Diluted	$111,586	$145,679	$188,848	$233,123
Weighted average shares outstanding—basic	138,308,130	130,977,193	135,381,624	130,287,383
Stock options	52,629	58,150	46,649	64,767
Unvested incentive units	129,024	132,195	61,122	119,583
2014 market performance-based awards	272,262	0	109,301	'
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	'	6,683,976	'	'
Weighted average shares/units outstanding-diluted	138,762,045	137,851,514	135,598,696	130,471,733
Basic	$0.81	$1.08	$1.39	$1.79
Diluted	$0.80	$1.06	$1.39	$1.79

Income_Per_Unit_Schedule_Of_An

Income Per Unit (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	20,443,722	15,684,535	22,322,087	20,625,120
Digital Realty Trust, L.P.	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	17,628,210	13,134,786	19,576,357	18,109,156
Potentially Dilutive 2029 Debentures	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	0	0	2,617,790	6,628,489
Series D Cumulative Redeemable Preferred Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	0	0	0	629,389
Series E Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	4,673,322	5,251,059	5,136,112	4,853,976
Series F Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	2,963,810	3,330,210	3,257,310	3,078,381
Series G Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	4,052,525	4,553,517	4,453,839	2,918,921
Series H Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potentially dilutive securities	5,938,553	0	4,111,306	0

Income_Taxes_Details

Income Taxes (Details) (USD $)	Sep. 30, 2014
In Millions, unless otherwise specified
Income Tax Disclosure [Abstract]	'
Net deferred tax liability	$143.30

Equity_And_Accumulated_Other_C2

Equity And Accumulated Other Comprehensive Income, Net (Equity Distribution Agreements) (Narrative) (Details) (2011 Equity Distribution Agreements, USD $)	9 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Jun. 29, 2011
2011 Equity Distribution Agreements	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Aggregate offering price of the distribution agreement maximum	'	$400,000,000
Net proceeds from sale of common stock	342,700,000	'
Issuance of common shares	5.7	'
Equity distribution agreements at an average price	$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_C3

Equity And Accumulated Other Comprehensive Income, Net (7.375% Series H Cumulative Redeemable Preferred Stock) (Narrative) (Details) (USD $)	0 Months Ended		9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 07, 2014	Mar. 26, 2014	Sep. 30, 2014	Dec. 31, 2013
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Shares issued upon conversion	'	'	0.9632	'
Series H Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Issuance date	7-Apr-14	'	26-Mar-14	'
Preferred stock, issued	2,000,000	12,000,000	14,600,000	0
Preferred stock, dividend rate	'	'	7.38%	7.38%
Preferred Stock, Value, Issued	'	$289,300	$353,300	'
Preferred stock dividend per share amount	'	'	$1.84	'
Preferred stock, liquidation preference per share/unit	'	'	$25	$25
Series H Cumulative Redeemable Preferred Stock/Units | Over-Allotment Option	'	'	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Preferred stock, issued	600,000	'	'	'
Digital Realty Trust, L.P. | Series H Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Issuance date	7-Apr-14	'	26-Mar-14	'
Preferred stock, dividend rate	'	'	7.38%	7.38%
Preferred stock dividend per share amount	'	'	$1.84	'
Preferred stock, redemption price per share	'	'	$25	'
Preferred stock dividend declared per share	'	'	$0.49	'
Preferred stock, liquidation preference per share/unit	'	'	$25	$25

Equity_And_Accumulated_Other_C4

Equity And Accumulated Other Comprehensive Income, Net (Ownership Interest In The Operating Partnership) (Details)	Sep. 30, 2014	Dec. 31, 2013
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Partners' capital account units	135,503,184	128,455,350
Percentage of total	97.70%	97.70%
Common Units Held By Third Parties	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Common units held by third parties	1,478,814	1,491,814
Percentage of total	1.10%	1.20%
Incentive Units Held By Employees And Directors	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Incentive units held by employees and directors	1,645,372	1,475,207
Percentage of total	1.20%	1.10%
Noncontrolling Interests In Operating Partnership	'	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Partners' capital account units	138,627,370	131,422,371
Percentage of total	100.00%	100.00%

Equity_And_Accumulated_Other_C5

Equity And Accumulated Other Comprehensive Income, Net (Summary Of Activity For Noncontrolling Interests In The Operating Partnership) (Details)	9 Months Ended
	Sep. 30, 2014
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	2,967,021
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	-13,000	[1]
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	-4,941	[1]
Cancellation of incentive units held by employees and directors	-24,380
Grant of incentive units to employees and directors	199,486
Ending balance	3,124,186
Common Units	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	1,491,814
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	-13,000	[1]
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	0	[1]
Cancellation of incentive units held by employees and directors	0
Grant of incentive units to employees and directors	0
Ending balance	1,478,814
Incentive Units	'
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Beginning balance	1,475,207
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	0	[1]
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	-4,941	[1]
Cancellation of incentive units held by employees and directors	-24,380
Grant of incentive units to employees and directors	199,486
Ending balance	1,645,372
[1]	This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

Equity_And_Accumulated_Other_C6

Equity And Accumulated Other Comprehensive Income, Net (Schedule Of Dividends/Distributions) (Details) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014
Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	11-Feb-14
Dividend/Distribution payment date	31-Mar-14
Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	29-Apr-14
Dividend/Distribution payment date	30-Jun-14
Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	21-Jul-14
Dividend/Distribution payment date	30-Sep-14
Series E Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	15,093
Preferred stock dividend per share amount	1.75
Series E Cumulative Redeemable Preferred Stock/Units | Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Series E Cumulative Redeemable Preferred Stock/Units | Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Series E Cumulative Redeemable Preferred Stock/Units | Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Series F Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	9,069
Preferred stock dividend per share amount	1.656
Series F Cumulative Redeemable Preferred Stock/Units | Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Series F Cumulative Redeemable Preferred Stock/Units | Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Series F Cumulative Redeemable Preferred Stock/Units | Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Series G Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	11,016
Preferred stock dividend per share amount	1.469
Series G Cumulative Redeemable Preferred Stock/Units | Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Series G Cumulative Redeemable Preferred Stock/Units | Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Series G Cumulative Redeemable Preferred Stock/Units | Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Series H Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	13,834
Preferred stock dividend per share amount	1.84375
Series H Cumulative Redeemable Preferred Stock/Units | Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	0
Series H Cumulative Redeemable Preferred Stock/Units | Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	7,104	[1]
Series H Cumulative Redeemable Preferred Stock/Units | Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	6,730
Common Stock	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	331,565
Common stock dividend per share amount	3.32
Common Stock | Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	106,743
Common Stock | Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	112,357
Common Stock | Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	112,465
[1]	Represents a pro rata dividend from and including the original issue date (March 26, 2014) to and including June 30, 2014.

Equity_And_Accumulated_Other_C7

Equity And Accumulated Other Comprehensive Income, Net (Schedule Of Accumulated Other Comprehensive Loss, Net) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	$10,691
Net current period change	-33,676
Reclassification to interest expense from interest rate swaps	-2,515
Accumulated other comprehensive income, net, Ending balance	-20,470
Foreign Currency Translation Adjustments	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	11,745
Net current period change	-30,104	[1]
Accumulated other comprehensive income, net, Ending balance	-18,359
Cash Flow Hedge Adjustments	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	-1,054
Net current period change	-3,572
Reclassification to interest expense from interest rate swaps	-2,515
Accumulated other comprehensive income, net, Ending balance	($2,111)
[1]	During the first nine months of 2014, the U.S. dollar was generally stronger against the other currencies in which we transact business, primarily the Euro and British pound sterling.

Capital_And_Accumulated_Other_2

Capital And Accumulated Other Comprehensive Income (7.375% Series H Cumulative Redeemable Preferred Units) (Narrative) (Details) (USD $)	0 Months Ended	9 Months Ended	12 Months Ended
	Apr. 07, 2014	Sep. 30, 2014	Dec. 31, 2013	Mar. 26, 2014
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Shares issued upon conversion	'	0.9632	'	'
Series H Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Issuance date	7-Apr-14	26-Mar-14	'	'
Preferred stock, issued	2,000,000	14,600,000	0	12,000,000
Preferred stock, dividend rate	'	7.38%	7.38%	'
Preferred stock dividend per share amount	'	$1.84	'	'
Preferred stock, liquidation preference per share/unit	'	$25	$25	'
Digital Realty Trust, L.P. | Series H Cumulative Redeemable Preferred Stock/Units	'	'	'	'
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Issuance date	7-Apr-14	26-Mar-14	'	'
Preferred stock, dividend rate	'	7.38%	7.38%	'
Preferred stock dividend per share amount	'	$1.84	'	'
Preferred stock, liquidation preference per share/unit	'	$25	$25	'
Preferred stock dividend declared per share	'	$0.49	'	'

Capital_And_Accumulated_Other_3

Capital And Accumulated Other Comprehensive Income (Partnership Units) (Narrative) (Details) (Digital Realty Trust, L.P., USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Digital Realty Trust, L.P.	'	'
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'
Redemption value of common units	$175.60	$124.10

Capital_And_Accumulated_Other_4

Capital And Accumulated Other Comprehensive Income (Schedule Of Dividends/Distributions) (Details) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014
Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	21-Jul-14
Dividend/Distribution payment date	30-Sep-14
Series E Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	15,093
Preferred stock dividend per share amount	1.75
Series E Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	15,093
Preferred stock dividend per share amount	1.75
Series F Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	9,069
Preferred stock dividend per share amount	1.656
Series F Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	9,069
Preferred stock dividend per share amount	1.656
Series G Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	11,016
Preferred stock dividend per share amount	1.469
Series G Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	11,016
Preferred stock dividend per share amount	1.469
Series H Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	13,834
Preferred stock dividend per share amount	1.84375
Series H Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	13,834
Preferred stock dividend per share amount	1.84375
Common Stock	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	331,565
Common stock dividend per share amount	3.32
Common Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	339,398
Common stock dividend per share amount	3.32
Installment 1 FY2014	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	11-Feb-14
Dividend/Distribution payment date	31-Mar-14
Installment 1 FY2014 | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	11-Feb-14
Dividend/Distribution payment date	31-Mar-14
Installment 1 FY2014 | Series E Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Installment 1 FY2014 | Series E Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Installment 1 FY2014 | Series F Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Installment 1 FY2014 | Series F Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Installment 1 FY2014 | Series G Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Installment 1 FY2014 | Series G Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Installment 1 FY2014 | Series H Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	0
Installment 1 FY2014 | Series H Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	0
Installment 1 FY2014 | Common Stock	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	106,743
Installment 1 FY2014 | Common Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	109,378
Installment 2 FY2014	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	29-Apr-14
Dividend/Distribution payment date	30-Jun-14
Installment 2 FY2014 | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	29-Apr-14
Dividend/Distribution payment date	30-Jun-14
Installment 2 FY2014 | Series E Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Installment 2 FY2014 | Series E Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Installment 2 FY2014 | Series F Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Installment 2 FY2014 | Series F Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Installment 2 FY2014 | Series G Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Installment 2 FY2014 | Series G Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Installment 2 FY2014 | Series H Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	7,104	[1]
Installment 2 FY2014 | Series H Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	7,104	[2]
Installment 2 FY2014 | Common Stock	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	112,357
Installment 2 FY2014 | Common Stock | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	115,008
Installment 2 FY2014 | Common Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	115,012
Installment 3 FY2014	'
Dividends Payable [Line Items]	'
Date dividend/distribution declared	21-Jul-14
Dividend/Distribution payment date	30-Sep-14
Installment 3 FY2014 | Series E Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Installment 3 FY2014 | Series E Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	5,031
Installment 3 FY2014 | Series F Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Installment 3 FY2014 | Series F Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,023
Installment 3 FY2014 | Series G Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Installment 3 FY2014 | Series G Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	3,672
Installment 3 FY2014 | Series H Cumulative Redeemable Preferred Stock/Units	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	6,730
Installment 3 FY2014 | Series H Cumulative Redeemable Preferred Stock/Units | Digital Realty Trust, L.P.	'
Dividends Payable [Line Items]	'
Dividends/Distributions, preferred stock/units	6,730
Installment 3 FY2014 | Common Stock	'
Dividends Payable [Line Items]	'
Dividends/Distributions, common stock/units	112,465
[1]	Represents a pro rata dividend from and including the original issue date (March 26, 2014) to and including June 30, 2014.
[2]	Represents a pro rata distribution from and including the original issue date (March 26, 2014) to and including June 30, 2014.

Capital_And_Accumulated_Other_5

Capital And Accumulated Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	$10,691
Net current period change	-33,676
Reclassification to interest expense from interest rate swaps	-2,515
Accumulated other comprehensive income, net, Ending balance	-20,470
Digital Realty Trust, L.P.	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	8,457
Net current period change	-34,377
Reclassification to interest expense from interest rate swaps	-2,567
Accumulated other comprehensive income, net, Ending balance	-23,353
Foreign Currency Translation Adjustments	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	11,745
Net current period change	-30,104	[1]
Accumulated other comprehensive income, net, Ending balance	-18,359
Foreign Currency Translation Adjustments | Digital Realty Trust, L.P.	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	10,235
Net current period change	-30,730	[1]
Accumulated other comprehensive income, net, Ending balance	-20,495
Cash Flow Hedge Adjustments	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	-1,054
Net current period change	-3,572
Reclassification to interest expense from interest rate swaps	-2,515
Accumulated other comprehensive income, net, Ending balance	-2,111
Cash Flow Hedge Adjustments | Digital Realty Trust, L.P.	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Accumulated other comprehensive income, net, Beginning balance	-1,778
Net current period change	-3,647
Reclassification to interest expense from interest rate swaps	-2,567
Accumulated other comprehensive income, net, Ending balance	($2,858)
[1]	During the first nine months of 2014, the U.S. dollar was generally stronger against the other currencies in which we transact business, primarily the Euro and British pound sterling.

Incentive_Plan_Narrative_Detai

Incentive Plan (Narrative) (Details) (USD $)	0 Months Ended
In Millions, except Share data, unless otherwise specified	2-May-07	Sep. 30, 2014	2-May-07	Sep. 30, 2014
		2004 Incentive Award Plan	Amended And Restated 2004 Incentive Award Plan	2014 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Shares authorized and reserved for issuance under the "Incentive Plan"	'	4,474,102	9,474,102	'
Increase in number of shares reserved for issuance	'	'	5,000,000	'
Maximum number of shares granted per employee	1,500,000	'	'	'
Maximum amount of cash paid per employee	$10	'	'	'
Number of shares remaining for issuance under the "Incentive Plan"	'	'	'	5,343,334

Incentive_Plan_LongTerm_Incent

Incentive Plan (Long-Term Incentive Units) (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Long-term incentive units granted	'	'	199,486	'	'
Long-Term Incentive Units	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Award vesting period	'	'	'4 years	'	'
Share/unit compensation expense	$1.50	$2.10	$11.30	$7.20	'
Capitalized expense related to construction and leasing activities	0.3	0.4	1.1	1.3	'
Unearned compensation	10.8	'	10.8	'	12.9
Unearned compensation, period of recognition	'	'	'791 days	'	'
Restricted Stock	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Capitalized expense related to construction and leasing activities	0.4	0.7	2	1.9	'
Unearned compensation	$11.70	'	$11.70	'	$8.70
Unearned compensation, period of recognition	'	'	'921 days	'	'
Service And Performance Condition | Long-Term Incentive Units	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Long-term incentive units granted	'	'	'	95,316	'
Number of shares satisfying the performance conditions	'	'	'	75,105	'
Service And Performance Condition | Restricted Stock	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Number of shares satisfying the performance conditions	'	'	50,805	'	'
Minimum | Restricted Stock	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Award vesting period	'	'	'3 years	'	'
Maximum | Restricted Stock	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Award vesting period	'	'	'4 years	'	'

Incentive_Plan_Summary_Of_Long

Incentive Plan (Summary Of Long-Term Incentive Units) (Details) (Long-Term Incentive Units, USD $)	9 Months Ended
	Sep. 30, 2014
Long-Term Incentive Units	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unvested Shares, beginning of period, Shares	440,951
Unvested Shares, Granted, Shares	199,486
Unvested Shares, Vested, Shares	-307,249
Unvested Shares, Cancelled or expired, Shares	-24,380
Unvested Shares, end of period, Shares	308,808
Unvested Shares, beginning of period, Weighted-Average Grant Date Fair Value	$62.42
Unvested Shares, Granted, Weighted-Average Grant Date Fair Value	$52.42
Unvested Shares, Vested, Weighted-Average Grant Date Fair Value	$58.90
Unvested Shares, Cancelled or expired, Weighted-Average Grant Date Fair Value	$64.13
Unvested Shares, end of period, Weighted-Average Grant Date Fair Value	$59.32

Incentive_Plan_Performance_Bas

Incentive Plan (Performance Based Awards) (Narrative) (Details) (2014 Performance Grant, USD $)	3 Months Ended	9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Award vesting period	'	'3 years
Award vesting percentage	'	0.00%
Expected volatility rate	'	33.00%
Risk-free interest rate	'	0.67%
Fair value of awards	'	$17.40
Requisite service period of share-based award	'	'4 years
Unearned compensation	11.1	11.1
Recognized compensation expense	0.8	2.2
Capitalized expense related to construction and leasing activities	$0.40	$1
Share-based Compensation Award, Tranche Four	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Award vesting percentage	'	50.00%
Share-based Compensation Award, Tranche Fifth	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Award vesting percentage	'	50.00%
Class D Units	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of awards to executive officers and other employees	'	664,316
Restricted Stock Units (RSUs)	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of awards to executive officers and other employees	'	248,026

Incentive_Plan_Market_Performa

Incentive Plan (Market Performance Based Awards) (Details) (2014 Performance Grant)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Market Performance Vesting Percentage	0.00%
RMS Relative Market Performance	0.00%
Share-based Compensation Award, Tranche One	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Market Performance Vesting Percentage	25.00%
RMS Relative Market Performance	0.00%
Share-based Compensation Award, Tranche Two	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Market Performance Vesting Percentage	50.00%
RMS Relative Market Performance	3.25%
Share-based Compensation Award, Tranche Three	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Market Performance Vesting Percentage	100.00%
RMS Relative Market Performance	6.50%

Incentive_Plan_Summary_Of_Ince

Incentive Plan (Summary Of Incentive Award Plan's Stock Option) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Options outstanding, beginning of period, Shares	123,690
Exercised, Shares	-16,134
Options outstanding, end of period, Shares	107,556
Exercisable, end of period, Shares	107,556
Options outstanding, beginning of period, Weighted average exercise price	$30.13
Exercised, Weighted average exercise price	$14.71
Options outstanding, end of period, Weighted average exercise price	$32.44
Exercisable, end of period, Weighted average exercise price	$32.44

Incentive_Plan_Summary_Of_Stoc

Incentive Plan (Summary Of Stock Options Outstanding And Exercisable) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Number outstanding	107,556	123,690
Weighted average remaining contractual life (years), Outstanding	'1 year 10 months 9 days	'
Weighted average exercise price, Outstanding	$32.44	'
Aggregate intrinsic value, Outstanding	$3,220,044	'
$12.00-13.02	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Exercise price, lower limit	$12	'
Exercise price, upper limit	$13.02	'
Number outstanding	20,204	'
Weighted average remaining contractual life (years), Outstanding	'29 days	'
Weighted average exercise price, Outstanding	$12	'
Aggregate intrinsic value, Outstanding	1,017,878	'
$20.37-28.09	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Exercise price, lower limit	$20.37	'
Exercise price, upper limit	$28.09	'
Number outstanding	17,000	'
Weighted average remaining contractual life (years), Outstanding	'1 year 1 month 20 days	'
Weighted average exercise price, Outstanding	$21.28	'
Aggregate intrinsic value, Outstanding	698,730	'
$33.18-41.73	'	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'	'
Exercise price, lower limit	$33.18	'
Exercise price, upper limit	$41.73	'
Number outstanding	70,352	'
Weighted average remaining contractual life (years), Outstanding	'2 years 6 months 19 days	'
Weighted average exercise price, Outstanding	$41.01	'
Aggregate intrinsic value, Outstanding	$1,503,436	'

Incentive_Plan_Restricted_Stoc

Incentive Plan (Restricted Stock) (Narrative) (Details) (Restricted Stock, USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Restricted stock expense	$0.40	$0.80	$1.90	$2.20	'
Capitalized expense related to construction and leasing activities	0.4	0.7	2	1.9	'
Unearned compensation	$11.70	'	$11.70	'	$8.70
Unearned compensation, period of recognition	'	'	'921 days	'	'
Service And Performance Condition	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Restricted shares granted	'	69,995	'	'	'
Number of shares satisfying the performance conditions	'	'	50,805	'	'
Minimum	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Award vesting period	'	'	'3 years	'	'
Maximum	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Award vesting period	'	'	'4 years	'	'

Incentive_Plan_Summary_Of_Rest

Incentive Plan (Summary Of Restricted Stock Activity) (Details) (Restricted Stock, USD $)	9 Months Ended
	Sep. 30, 2014
Restricted Stock	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unvested Shares, beginning of period, Shares	255,081
Unvested Shares, Granted, Shares	174,523
Unvested Shares, Vested, Shares	-73,980
Unvested Shares, Cancelled or expired, Shares	-30,676
Unvested Shares, end of period, Shares	324,948
Unvested Shares, beginning of period, Weighted-Average Grant Date Fair Value	$63.35
Unvested Shares, Granted, Weighted-Average Grant Date Fair Value	$52.51
Unvested Shares, Vested, Weighted-Average Grant Date Fair Value	$60.78
Unvested Shares, Cancelled or expired, Weighted-Average Grant Date Fair Value	$61.52
Unvested Shares, end of period, Weighted-Average Grant Date Fair Value	$58.29

Derivative_Instruments_Details

Derivative Instruments (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Derivative [Line Items]	'		'	'		'	'
Notional Amount	$709,439		'	$709,439		'	$560,945
Fair Value at Significant Other Observable Inputs (Level 2)	-1,025		'	-1,025		'	55
Interest Expense	48,169		47,742	144,689		143,403	'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedge Adjustments	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Interest Expense	'		'	5,300		'	'
SGD	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Exchange rate	0.78		'	0.78		'	0.79
Forward Contracts	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Notional Amount	150,000	[1]	'	150,000	[1]	'	'
Type of Derivative	'		'	'Forward-starting Swap		'	'
Strike Rate	2.09%		'	2.09%		'	'
Effective Date	'		'	15-Jul-14		'	'
Expiration Date	'		'	15-Jul-19		'	'
Fair Value at Significant Other Observable Inputs (Level 2)	-1,516		'	-1,516		'	'
Currently Paying Contracts	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Notional Amount	559,439		'	559,439		'	560,945
Fair Value at Significant Other Observable Inputs (Level 2)	491		'	491		'	55
Currently Paying Contracts | Swap 1	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Notional Amount	410,905	[2]	'	410,905	[2]	'	410,905	[2]
Type of Derivative	'		'	'Swap		'	'
Strike Rate	0.72%		'	0.72%		'	'
Fair Value at Significant Other Observable Inputs (Level 2)	223		'	223		'	-76
Currently Paying Contracts | Swap 2	'		'	'		'	'
Derivative [Line Items]	'		'	'		'	'
Notional Amount	148,534	[3]	'	148,534	[3]	'	150,040	[3]
Type of Derivative	'		'	'Swap		'	'
Strike Rate	0.93%		'	0.93%		'	'
Effective Date	'		'	17-Jul-12		'	'
Expiration Date	'		'	18-Apr-17		'	'
Fair Value at Significant Other Observable Inputs (Level 2)	$268		'	$268		'	$131
[1]	In January 2014, we entered into a forward-starting swap agreement with a notional amount of USD $150.0 million for a future debt issuance with a tenor of five years or greater. The forward-starting swap has a mandatory early termination date of January 15, 2015 to cash settle the swap.
[2]	Represents the U.S. dollar tranche of the unsecured term loan.
[3]	Represents a portion of the Singapore dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.78 to 1.00 SGD as of September 30, 2014 and $0.79 to 1.00 SGD as of December 31, 2013.

Fair_Value_Of_Instruments_Esti

Fair Value Of Instruments (Estimated Fair Value And Carrying Amounts) (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Estimated Fair Value	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Long-term Debt, Fair Value	$4,893,320		$5,085,078
Unsecured senior notes	2,964,962	[1],[2]	2,379,999	[1],[2]
Exchangeable senior debentures	0	[2]	336,847	[2]
Mortgage Loans	441,149	[2]	622,580	[2]
Carrying Value	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Long-term Debt, Fair Value	4,739,729		4,961,892
Unsecured senior notes	2,835,478	[1],[2]	2,364,232	[1],[2]
Exchangeable senior debentures	0	[2]	266,400	[2]
Mortgage Loans	417,042	[2]	585,608	[2]
Global revolving credit facility | Estimated Fair Value	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Lines of credit	485,023	[3]	724,668	[3]
Global revolving credit facility | Carrying Value	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Lines of credit	485,023	[3]	724,668	[3]
Unsecured term loan | Estimated Fair Value	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Lines of credit	1,002,186	[4]	1,020,984	[4]
Unsecured term loan | Carrying Value	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Lines of credit	1,002,186	[4]	1,020,984	[4]
Senior Notes	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Long-term Debt, Fair Value	$16,432		$15,048
[1]	The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes, 2022 Notes, 2023 Notes and 2025 Notes are net of discount of $16,432 and $15,048 in the aggregate as of September 30, 2014 and December 31, 2013, respectively.
[2]	Valuations for our unsecured senior notes and mortgage loans are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes, 2022 Notes, 2023 Notes and 2025 Notes and 2029 Debentures are valued based on quoted market prices.
[3]	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 ratings.
[4]	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 ratings.

Commitments_and_Contingencies_

Commitments and Contingencies (Details)

3 Months Ended

9 Months Ended

9 Months Ended

27 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Jul. 11, 2012

Jul. 11, 2012

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Sentrum Portfolio

Sentrum Portfolio

Sentrum Portfolio

Sentrum Portfolio

Sentrum Portfolio

Sentrum Portfolio

Sentrum Portfolio

Sentrum Portfolio

29 A International Business Park

29 A International Business Park

Convergence Business Park

USD ($)

GBP (£)

USD ($)

GBP (£)

USD ($)

GBP (£)

USD ($)

GBP (£)

USD ($)

SGD

USD ($)

Commitments and Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts payable and other accrued liabilities

$648,314,000

'

$648,314,000

'

$662,687,000

'

'

'

'

'

'

'

'

$12,800,000

'

'

Additional performance based consideration earned (maximum)

'

'

'

'

'

'

'

'

'

'

'

'

'

39,200,000

50,000,000

'

Expiration of earnout contingency

'

'

'

'

'

'

'

'

'

'

'

'

'

'November 2020

'November 2020

'

Lease expiration period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'April 2017

Sale price of building

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,000,000

Real estate price, per square acre

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

225,000

Contingent liability

'

'

'

'

'

53,500,000

33,000,000

'

'

53,500,000

33,000,000

87,600,000

56,500,000

'

'

'

Earnout payment

'

'

'

'

'

10,300,000

6,200,000

25,800,000

16,900,000

36,100,000

23,100,000

'

'

'

'

'

Change in fair value of contingent consideration

1,465,000

943,000

4,102,000

13,000

'

'

'

'

'

'

'

'

'

'

'

'

Commitments related to construction contracts

$182,600,000

'

$182,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Subsequent_Events_Schedule_Of_

Subsequent Events (Schedule Of Dividends Declared And Distributions Per Unit) (Details) (USD $)

9 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

In Millions, except Per Share data, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Nov. 04, 2014

Oct. 17, 2014

Oct. 17, 2014

Series E Cumulative Redeemable Preferred Stock/Units

Series F Cumulative Redeemable Preferred Stock/Units

Series G Cumulative Redeemable Preferred Stock/Units

Series H Cumulative Redeemable Preferred Stock/Units

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Developer of Data Centers, Southwest US and Mexico

Developer of Data Centers, Southwest US and Mexico

Series E Cumulative Redeemable Preferred Stock/Units

Series E Cumulative Redeemable Preferred Stock/Units

Series F Cumulative Redeemable Preferred Stock/Units

Series F Cumulative Redeemable Preferred Stock/Units

Series G Cumulative Redeemable Preferred Stock/Units

Series G Cumulative Redeemable Preferred Stock/Units

Series H Cumulative Redeemable Preferred Stock/Units

Series H Cumulative Redeemable Preferred Stock/Units

Common Stock

Common Stock

Other than Securities Investment

Other than Securities Investment

Subsequent Event

Subsequent Event

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$17.10

Sale of investments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31.6

'

Gain on sale of investments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$14.50

'

Dividend and distribution amount

'

'

'

'

'

$0.44

'

$0.41

'

$0.37

'

$0.46

'

$0.83

'

'

Dividend and distribution payable date

'

'

'

'

31-Dec-14

'

31-Dec-14

'

31-Dec-14

'

31-Dec-14

'

15-Jan-15

'

'

'

Dividend and distribution payable to holders of record on

'

'

'

'

15-Dec-14

'

15-Dec-14

'

15-Dec-14

'

15-Dec-14

'

15-Dec-14

'

'

'

Annual equivalent rate of dividend and distribution

$1.75

$1.66

$1.47

$1.84

$1.75

'

$1.66

'

$1.47

'

$1.84

'

$3.32

'

'

'