Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) (Unsecured Term Loan [Member], Digital Realty Trust, L.P. [Member], USD $)	9 Months Ended
	Sep. 30, 2013 item		Aug. 15, 2013	Aug. 14, 2013	Dec. 31, 2012
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Credit facility, initiation date	Aug. 15, 2013
Credit facility, maximum borrowing capacity	$ 1,100,000,000		$ 1,000,000,000	$ 750,000,000
Maturity date	Apr. 16, 2017	[1]
Revolving credit facility commitments extension (years)	6 months
Number of extension options	2
Senior unsecured debt basis spread on variable rate	1.20%
Balance/Principal Outstanding	950,205,000	[2]			757,839,000	[2]
Capitalized financing costs	$ 8,400,000

[1] Interest rates are based on our senior unsecured debt ratings and are currently 120 basis points over the applicable index for floating rate advances. Two six-month extensions are available, which we may exercise if certain conditions are met.

[2] Balances as of September 30, 2013 and December 31, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of September 30, 2013 Weighted-average interest rate Balance as of December 31, 2012 Weighted-average interest rate U.S. dollar ($) $ 410,905 1.38% $ 410,905 1.66% Singapore dollar (SGD) 181,956 (a) 1.42% 155,098 (b) 1.77% British pound sterling (£) 126,413 (a) 1.70% 91,191 (b) 1.94% Euro (€) 134,593 (a) 1.38% 65,305 (b) 1.56% Australian dollar (AUD) 96,338 (a) 3.80% 35,340 (b) 4.57% Total $ 950,205 1.68% $ 757,839 1.84% (a) Based on exchange rates of $0.80 to 1.00 SGD, $1.62 to £1.00, $1.35 to €1.00 and $0.93 to 1.00 AUD as of September 30, 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.