Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Term Loan) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
SGD [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	0.80		0.82
GBP [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.62		1.63
EUR [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.35		1.32
AUD [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	0.93		1.04
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Revolving credit facilities interest rates	Various	[1]
Maturity Date	Apr. 16, 2017	[1]
Balance/Principal Outstanding	$ 950,205	[2]	$ 757,839	[2]
Revolving credit facility basis spread on variable rate	1.20%
Weighted-average interest rate	1.68%		1.84%
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	1.38%		1.66%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | SGD [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	181,956	[3]	155,098	[4]
Weighted-average interest rate	1.42%		1.77%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | GBP [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	126,413	[3]	91,191	[4]
Weighted-average interest rate	1.70%		1.94%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | EUR [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	134,593	[3]	65,305	[4]
Weighted-average interest rate	1.38%		1.56%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | AUD [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	$ 96,338	[3]	$ 35,340	[4]
Weighted-average interest rate	3.80%		4.57%

[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.

[3] 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.

[4] 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.