Consolidated Statement Of Capital - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Balance (units)		135,626,255
Conversion of limited partner common units to general partner common units		$ 1,364
Amortization of share-based compensation		12,450
Net income	$ 57,842	318,164
Other comprehensive income—foreign currency translation adjustments	(19,105)	(41,480)
Other comprehensive loss—fair value of interest rate swaps	(2,534)	(4,374)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	$ 574	$ 2,077
Balance (units)	135,843,684	135,843,684
Digital Realty Trust, L.P.
Balance as of December 31, 2014		$ 3,914,238
Common stock offering costs, net		1,498
Issuance of common units in connection with the exercise of stock options		798
Amortization of share-based compensation		12,450
Distributions		(409,031)
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions		(372)
Net income	$ 56,689	317,011
Other comprehensive income—foreign currency translation adjustments	(19,105)	(41,480)
Other comprehensive loss—fair value of interest rate swaps	(2,534)	(4,374)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense	574	2,077
Balance as of September 30, 2015	3,792,815	3,792,815
Accumulated Other Comprehensive Loss, Net | Digital Realty Trust, L.P.
Balance as of December 31, 2014		(48,433)
Other comprehensive income—foreign currency translation adjustments		(41,480)
Other comprehensive loss—fair value of interest rate swaps		(4,374)
Other comprehensive income—reclassification of accumulated other comprehensive loss to interest expense		2,077
Balance as of September 30, 2015	(92,210)	(92,210)
Noncontrolling Interests in Consolidated Joint Ventures | Digital Realty Trust, L.P.
Balance as of December 31, 2014		6,791
Distributions to noncontrolling interests in consolidated joint ventures, net of contributions		(372)
Net income		342
Balance as of September 30, 2015	6,761	6,761
General Partner | Preferred Units | Digital Realty Trust, L.P.
Balance as of December 31, 2014		$ 1,048,121
Balance (units)		43,400,000
Distributions		$ (55,367)
Net income		55,367
Balance as of September 30, 2015	$ 1,048,121	$ 1,048,121
Balance (units)	43,400,000	43,400,000
General Partner | Common Units | Digital Realty Trust, L.P.
Balance as of December 31, 2014		$ 2,875,181
Balance (units)		135,626,255
Conversion of limited partner common units to general partner common units		$ 1,364
Conversion of limited partner common units to general partner common units (units)		118,587
Issuance of unvested restricted common units, net of forfeitures (units)		71,881
Common stock offering costs, net		$ 1,498
Issuance of common units in connection with the exercise of stock options		$ 798
Issuance of common units in connection with the exercise of stock options (units)		26,961
Amortization of share-based compensation		$ 12,450
Reclassification of vested share-based awards		(8,602)
Distributions		(346,331)
Net income		256,152
Balance as of September 30, 2015	$ 2,792,510	$ 2,792,510
Balance (units)	135,843,684	135,843,684
Limited Partners | Common Units | Digital Realty Trust, L.P.
Balance as of December 31, 2014		$ 32,578
Balance (units)		3,013,661
Conversion of limited partner common units to general partner common units		$ (1,364)
Conversion of limited partner common units to general partner common units (units)		(118,587)
Issuance of common units, net of forfeitures (units)		(59,461)
Reclassification of vested share-based awards		$ 8,602
Distributions		(7,333)
Net income		5,150
Balance as of September 30, 2015	$ 37,633	$ 37,633
Balance (units)	2,835,613	2,835,613