Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Term Loan) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 item		Dec. 31, 2013
SGD [Member]
Debt Instrument [Line Items]
Exchange rate	0.80		0.79
Digital Realty Trust, L.P. [Member] | SGD [Member]
Debt Instrument [Line Items]
Exchange rate	0.80		0.79
Digital Realty Trust, L.P. [Member] | GBP [Member]
Debt Instrument [Line Items]
Exchange rate	1.67		1.66
Digital Realty Trust, L.P. [Member] | EUR [Member]
Debt Instrument [Line Items]
Exchange rate	1.38		1.37
Digital Realty Trust, L.P. [Member] | AUD [Member]
Debt Instrument [Line Items]
Exchange rate	0.93		0.89
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Revolving credit facilities interest rates	Various	[1],[2]
Maturity Date	Apr. 16, 2017
Balance/Principal Outstanding	$ 1,026,891	[3]	$ 1,020,984	[3]
Basis spread on variable rate	1.20%
Number of extension options	2
Revolving credit facility commitments extension	6 months
Weighted-average interest rate	1.68%	[4]	1.67%	[5]
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	2.01%		2.00%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | USD [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	410,905		410,905
Weighted-average interest rate	1.36%	[4]	1.37%	[5]
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | USD [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.92%		1.92%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | SGD [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	181,710	[6]	180,918	[7]
Weighted-average interest rate	1.42%	[4]	1.40%	[5]
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | SGD [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	2.00%		2.00%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | GBP [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	201,485	[6]	200,216	[7]
Weighted-average interest rate	1.72%		1.72%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | EUR [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	137,001	[6]	136,743	[7]
Weighted-average interest rate	1.43%		1.43%
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member] | AUD [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	$ 95,790	[6]	$ 92,202	[7]
Weighted-average interest rate	3.82%		3.78%

[1] Interest rates are based on our senior unsecured debt ratings and are 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] We have entered into interest rate swap agreements as a cash flow hedge for interest generated by the U.S. dollar and Singapore dollar tranches of the unsecured term loan. See note 14 for further information.

[3] Balances as of March 31, 2014 and December 31, 2013 are as follows (balances, in thousands): Denomination of Draw Balance as of March 31, 2014 Weighted-average interest rate Balance as of December 31, 2013 Weighted-average interest rate U.S. dollar ($) $ 410,905 1.36% (b) $ 410,905 1.37% (d) Singapore dollar (SGD) 181,710 (a) 1.42% 180,918 (c) 1.40% (d) British pound sterling (£) 201,485 (a) 1.72% 200,216 (c) 1.72% Euro (€) 137,001 (a) 1.43% 136,743 (c) 1.43% Australian dollar (AUD) 95,790 (a) 3.82% 92,202 (c) 3.78% Total $ 1,026,891 1.68% (b) $ 1,020,984 1.67% (d) (a) Based on exchange rates of $0.80 to 1.00 SGD, $1.67 to £1.00, $1.38 to €1.00, $0.93 to 1.00 AUD, respectively, as of March 31, 2014. (b) As of March 31, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.01% (Total). See Note 14 for further discussion on interest rate swaps. (c) Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00, $0.89 to 1.00 AUD, respectively, as of December 31, 2013. (d) As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.

[4] As of March 31, 2014, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.01% (Total). See Note 14 for further discussion on interest rate swaps.

[5] As of December 31, 2013, the weighted-average interest rate reflecting interest rate swaps was 1.92% (U.S. dollar), 2.00% (Singapore dollar) and 2.00% (Total). See Note 14 for further discussion on interest rate swaps.The 2029 Debentures were redeemed in April 2014

[6] Based on exchange rates of $0.80 to 1.00 SGD, $1.67 to £1.00, $1.38 to €1.00 and $0.93 to 1.00 AUD, respectively, as of March 31, 2014.

[7] Based on exchange rates of $0.79 to 1.00 SGD, $1.66 to £1.00, $1.37 to €1.00 and $0.89 to 1.00 AUD, respectively, as of December 31, 2013.