Capital And Accumulated Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	$ (45,046)
Net current period change	(47,318)
Reclassification to interest expense from interest rate swaps	802
Balance as of March 31, 2015	(91,562)
Digital Realty Trust, L.P.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(48,433)
Net current period change	(48,260)
Reclassification to interest expense from interest rate swaps	818
Balance as of March 31, 2015	(95,875)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(39,567)
Net current period change	(44,948)	[1]
Reclassification to interest expense from interest rate swaps	0
Balance as of March 31, 2015	(84,515)
Foreign currency translation adjustments | Digital Realty Trust, L.P.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(42,138)
Net current period change	(45,843)	[1]
Balance as of March 31, 2015	(87,981)
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(5,479)
Net current period change	(2,370)
Reclassification to interest expense from interest rate swaps	802
Balance as of March 31, 2015	(7,047)
Cash flow hedge adjustments | Digital Realty Trust, L.P.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(6,295)
Net current period change	(2,417)
Reclassification to interest expense from interest rate swaps	818
Balance as of March 31, 2015	$ (7,894)

[1] During the first three months of 2015, the U.S. dollar was generally stronger against the other currencies in which we transact business, primarily the Euro and British pound sterling.