Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) (Unsecured Term Loan [Member], Digital Realty Trust, L.P. [Member], USD $)	1 Months Ended	6 Months Ended		0 Months Ended
	Jul. 31, 2012	Jun. 30, 2012		Jun. 13, 2013 5.50% Exchangeable Senior Debentures Due 2029 [Member]	Apr. 20, 2009 5.50% Exchangeable Senior Debentures Due 2029 [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			Apr. 15, 2029
Senior unsecured debt basis spread on variable rate		145
Delay draw available from date of close		250,000,000
Capitalized financing costs		5,100,000
Balance/Principal Outstanding		520,942,000	[1]
Additional amount borrowed during the month	222,500,000
Issuance date					Apr. 20, 2009
Exchangeable senior debenture face amount at time of issuance					266,400,000
Interest rate					5.50%
Exchangeable debenture exchange rate, shares				24.4550	23.2558
Amount of principal exchanged for shares				$ 1,000	$ 1,000
Reference dividend rate, per share					$ 0.33

[1] (4)Balances as of June 30, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of
June 30, 2012 Weighted-average
interest rate U.S. Dollar ($) $206,0001.69% Singapore Dollar (SGD) 149,791(a) 1.79% British Pound Sterling (£) 88,116(a) 2.14% Euro (€) 62,702(a) 1.81% Australian Dollar (AUD) 14,333(a) 5.74% $520,9421.92% (a)Based on exchange rates of $0.80 to 1.00 SGD, $1.57 to £1.00, $1.27 to €1.00 and $1.02 to 1.00 AUD, respectively, as of June 30, 2012.