Equity And Accumulated Other Comprehensive Income, Net (Summary Of Activity For Noncontrolling Interests In The Operating Partnership) (Details)	9 Months Ended
	Sep. 30, 2015 shares
Common and Incentive Unit Activity [Roll Forward]
Beginning balance	3,013,661
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(42,500)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(76,087)
Cancellation of incentive units held by employees and directors	(150,140)
Grant of incentive units to employees and directors	90,679
Ending balance	2,835,613
Common Units
Common and Incentive Unit Activity [Roll Forward]
Beginning balance	1,463,814
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(42,500)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	0
Cancellation of incentive units held by employees and directors	0
Grant of incentive units to employees and directors	0
Ending balance	1,421,314
Incentive Units
Common and Incentive Unit Activity [Roll Forward]
Beginning balance	1,549,847
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	0
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(76,087)
Cancellation of incentive units held by employees and directors	(150,140)
Grant of incentive units to employees and directors	90,679
Ending balance	1,414,299