Equity And Accumulated Other Comprehensive Loss, Net (Summary Of Activity For Noncontrolling Interests In The Operating Partnership) (Details)	3 Months Ended
	Mar. 31, 2012
As of December 31	4,936,130
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(165,000)	[1]
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(56,716)	[1]
Grant of incentive units to employees and directors	159,220
As of March 31, 2012	4,873,634
Common Units [Member]
As of December 31	3,405,814
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(165,000)	[1]
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock		[1]
Grant of incentive units to employees and directors
As of March 31, 2012	3,240,814
Incentive Units [Member]
As of December 31	1,530,316
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(56,716)	[1]
Grant of incentive units to employees and directors	159,220
As of March 31, 2012	1,632,820

[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.