Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Global Revolving Credit Facility) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Revolving credit facilities interest rates	Various	[1]
Maturity Date	Nov. 03, 2015
Balance/Principal Outstanding	$ 324,476	[2]	$ 275,106	[2]
Revolving credit facility basis spread on variable rate	125
Basis rate for unused portion of the credit facility	25
Weighted-average interest rate	1.68%		1.67%
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	261,500		194,000
Weighted-average interest rate	1.50%		1.54%
EUR [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.27		1.30
GBP [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.57		1.55
GBP [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	19,634	[3]	49,892	[4]
Weighted-average interest rate	1.92%		1.99%
Exchange rate	1.57		1.55
SGD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	10,276	[3]	28,151	[4]
Weighted-average interest rate	1.57%		1.56%
Exchange rate	0.80		0.77
AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	13,923	[3]	3,063	[4]
Weighted-average interest rate	4.90%		5.89%
Exchange rate	1.02		1.02
HKD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	$ 19,143	[3]
Weighted-average interest rate	1.55%
Exchange rate	0.13

[1] The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin which is based on the credit rating of our long-term debt and is currently 125 basis points. An annual facility fee on the unused portion of the facility, based on the credit rating of our long-term debt and currently 25 basis points, is payable quarterly.

[2] (2)Balances as of June 30, 2012 and December 31, 2011 are as follows (balances, in thousands): Denomination of Draw Balance as of
June 30, 2012 Weighted-average
interest rate Balance as of
December 31, 2011 Weighted-average
interest rate U.S. Dollar ($) $261,5001.50% $194,0001.54% British Pound Sterling (£) 19,634(a) 1.92% 49,892(b) 1.99% Singapore Dollar (SGD) 10,276(a) 1.57% 28,151(b) 1.56% Australian Dollar (AUD) 13,923(a) 4.90% 3,063(b) 5.89% Hong Kong Dollar (HKD) 19,143(a) 1.55% — — Total $324,4761.68% $275,1061.67% (a)Based on exchange rates of $1.57 to £1.00, $0.80 to 1.00 SGD, $1.02 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of June 30, 2012. (b)Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

[3] Based on exchange rates of $1.57 to £1.00, $0.80 to 1.00 SGD, $1.02 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of June 30, 2012.

[4] Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.