Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Term Loan) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012
SGD [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	0.79		0.82
GBP [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.52		1.63
EUR [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.30		1.32
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Revolving credit facilities interest rates	Various	[1],[2]
Maturity Date	Apr. 16, 2017
Balance/Principal Outstanding	$ 741,178	[3],[4]	$ 757,839	[3]	$ 525,000
Revolving credit facility basis spread on variable rate	1.45%
Weighted-average interest rate	1.79%		1.84%
Exchange rate			1.04
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | USD [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	410,905		410,905
Weighted-average interest rate	1.64%		1.66%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | SGD [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	149,460	[5]	155,098	[6]
Weighted-average interest rate	1.70%		1.77%
Exchange rate	0.79		0.82
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | GBP [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	85,345	[5]	91,191	[6]
Weighted-average interest rate	1.94%		1.94%
Exchange rate	1.52		1.63
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | EUR [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	64,399	[5]	65,305	[6]
Weighted-average interest rate	1.57%		1.56%
Exchange rate	1.30
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | AUD [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	$ 31,069	[5]	$ 35,340	[6]
Weighted-average interest rate	4.27%		4.57%
Exchange rate	0.91

[1] Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances.

[2] We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. dollar and Singapore dollar tranches of the unsecured term loan. See note 13, “Derivative Instruments” for further information.

[3] Balances as of June 30, 2013 and December 31, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of June 30, 2013 Weighted-average interest rate Balance as of December 31, 2012 Weighted-average interest rate U.S. dollar ($) $ 410,905 1.64% $ 410,905 1.66% Singapore dollar (SGD) 149,460 (a) 1.70% 155,098 (b) 1.77% British pound sterling (£) 85,345 (a) 1.94% 91,191 (b) 1.94% Euro (€) 64,399 (a) 1.57% 65,305 (b) 1.56% Australian dollar (AUD) 31,069 (a) 4.27% 35,340 (b) 4.57% Total $ 741,178 1.79% $ 757,839 1.84% (a) Based on exchange rates of $0.79 to 1.00 SGD, $1.52 to £1.00, $1.30 to €1.00 and $0.91 to 1.00 AUD as of June 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.

[4] Balances as of June 30, 2013 and December 31, 2012 are as follows (balances, in thousands):

[5] Based on exchange rates of $0.79 to 1.00 SGD, $1.52 to £1.00, $1.30 to €1.00 and $0.91 to 1.00 AUD as of June 30, 2013.

[6] 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.