Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) (Unsecured Term Loan [Member], Digital Realty Trust, L.P. [Member], USD $)	1 Months Ended	3 Months Ended
	Jul. 31, 2012	Mar. 31, 2013		Dec. 31, 2012	Jun. 30, 2012
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Credit facility, initiation date		Apr. 17, 2012
Credit facility, maximum borrowing capacity		$ 750,000,000
Maturity date		Apr. 16, 2017
Senior unsecured debt basis spread on variable rate		1.45%
Delay draw available from date of close		250,000,000
Delay draw available from date of close, period		90 days
Additional amount borrowed during the month	225,000,000
Balance/Principal Outstanding		747,830,000	[1]	757,839,000	525,000,000
Capitalized financing costs		$ 5,300,000

[1] Balances as of March 31, 2013 and December 31, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of March 31, 2013 Weighted-average interest rate Balance as of December 31, 2012 Weighted-average interest rate U.S. dollar ($) $ 410,905 1.65% $ 410,905 1.66% Singapore dollar (SGD) 152,785 (a) 1.78% 155,098 (b) 1.77% British pound sterling (£) 85,261 (a) 1.94% 91,191 (b) 1.94% Euro (€) 63,454 (a) 1.57% 65,305 (b) 1.56% Australian dollar (AUD) 35,425 (a) 4.51% 35,340 (b) 4.57% Total $ 747,830 1.84% $ 757,839 1.84% (a) Based on exchange rates of $0.81 to 1.00 SGD, $1.52 to £1.00, $1.28 to €1.00 and $1.04 to 1.00 AUD as of March 31, 2013. (b) Based on exchange rates of $0.82 to 1.00 SGD, $1.63 to £1.00, $1.32 to €1.00 and $1.04 to 1.00 AUD as of December 31, 2012.