Capital And Accumulated Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	$ (45,046)
Net current period change	(44,978)
Reclassification to interest expense from interest rate swaps	2,036
Balance as of September 30, 2015	(87,988)
Digital Realty Trust, L.P.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(48,433)
Net current period change	(45,854)
Reclassification to interest expense from interest rate swaps	2,077
Balance as of September 30, 2015	(92,210)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(39,567)
Net current period change	(40,688)
Reclassification to interest expense from interest rate swaps	0
Balance as of September 30, 2015	(80,255)
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	(41,480)
Balance as of September 30, 2015	(83,618)
Cash flow hedge adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2014	(5,479)
Net current period change	(4,290)
Reclassification to interest expense from interest rate swaps	2,036
Balance as of September 30, 2015	(7,733)
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	(4,374)
Reclassification to interest expense from interest rate swaps	2,077
Balance as of September 30, 2015	$ (8,592)