Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) (Unsecured Term Loan [Member], Digital Realty Trust, L.P. [Member], USD $)	1 Months Ended	9 Months Ended
	Jul. 31, 2012	Sep. 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		145
Delay draw available from date of close		250,000,000
Additional amount borrowed during the month	225,000,000
Balance/Principal Outstanding		754,935,000	[1]
Capitalized financing costs		$ 5,300,000

[1] (4) Balances as of September 30, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of September 30, 2012 Weighted-average
interest rate U.S. Dollar ($) $ 410,905 1.67 % Singapore Dollar (SGD) 154,391 (a) 1.81 % British Pound Sterling (£) 90,697 (a) 1.97 % Euro (€) 63,657 (a) 1.57 % Australian Dollar (AUD) 35,285 (a) 5.03 % $ 754,935 1.89 % (a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.