Equity and Accumulated Other Comprehensive Loss, Net (Noncontrolling Interest) (Details)	Jun. 30, 2011	Dec. 31, 2010
Digital Realty Trust, Inc. [Member]
Partners' capital account units	98,754,727	91,159,221
Percentage of total	95.10%	94.30%
Common Units Held by Third Parties [Member]
Common units held by third parties	3,430,814	3,937,827
Percentage of total	3.30%	4.10%
Incentive Units held by Employees and Directors [Member]
Incentive units held by employees and directors	1,604,032	1,525,622
Percentage of total	1.60%	1.60%
Noncontrolling Interests in Operating Partnership [Member]
Partners' capital account units	103,789,573	96,622,670
Percentage of total	100.00%	100.00%