Equity And Accumulated Other Comprehensive Loss, Net (Ownership Interest In The Operating Partnership) (Details)	Mar. 31, 2012	Dec. 31, 2011
Digital Realty Trust, Inc. [Member]
Partners' capital account units	107,342,049	106,039,279
Percentage of total	95.70%	95.60%
Common Units Held By Third Parties [Member]
Common units held by third parties	3,240,814	3,405,814
Percentage of total	2.80%	3.00%
Incentive Units Held By Employees And Directors [Member]
Incentive units held by employees and directors	1,632,820	1,530,316
Percentage of total	1.50%	1.40%
Noncontrolling Interests In Operating Partnership [Member]
Partners' capital account units	112,215,683	110,975,409
Percentage of total	100.00%	100.00%