Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Global Revolving Credit Facility) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 03, 2017
Revolving credit facilities interest rates	Various	[1]
Balance/Principal Outstanding	$ 724,668	[2]	$ 723,729	[2]
Basis rate for unused portion of the credit facility	0.20%
Number of extension options	2
Revolving credit facility commitments extension	6 months
Weighted-average interest rate	1.60%		2.05%
Basis spread on variable rate	1.10%
Exchange rate	0.13
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	696,668	[3]	709,729	[3]
Weighted-average interest rate	1.53%	[3]	2.02%	[3]
Basis spread on variable rate	1.10%		1.25%
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	28,000	[4]	14,000	[4]
Weighted-average interest rate	3.35%	[4]	3.50%	[4]
Basis spread on variable rate	0.10%		0.25%
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.27%
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	466,000	[3]	35,000	[3],[5]
Weighted-average interest rate	1.27%	[3]	1.47%	[3]
GBP [Member]
Debt Instrument [Line Items]
Exchange rate			1.63
GBP [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding			433,195	[3],[5]
Weighted-average interest rate			1.75%	[3]
EUR [Member]
Debt Instrument [Line Items]
Exchange rate			1.32
EUR [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.33%
EUR [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	78,335	[3],[6]	87,074	[3],[5]
Weighted-average interest rate	1.33%	[3]	1.36%	[3]
SGD [Member]
Debt Instrument [Line Items]
Exchange rate	0.79		0.82
SGD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding			26,191	[3],[5]
Weighted-average interest rate			1.56%	[3]
AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	3.70%
AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	67,212	[3],[6]	93,754	[3],[5]
Weighted-average interest rate	3.70%	[3]	4.42%	[3]
HKD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.31%
HKD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	57,390	[3],[6]	34,515	[3],[5]
Weighted-average interest rate	1.31%	[3]	1.53%	[3]
JPY [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.21%
JPY [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	12,858	[3],[6]
Weighted-average interest rate	1.21%	[3]
CAD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	2.32%
CAD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	$ 14,873	[3],[6]
Weighted-average interest rate	2.32%	[3]

[1] The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 110 basis points, which is based on the credit rating of our long-term debt. An annual facility fee of 20 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the total commitment amount of the facility. Two six-month extensions are available, which we may exercise if certain conditions are met.

[2] Balances as of December 31, 2013 and December 31, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of December 31, 2013 Weighted-average interest rate Balance as of December 31, 2012 Weighted-average interest rate Floating Rate Borrowing (a) U.S. dollar ($) $ 466,000 1.27% $ 35,000 1.47% British pound sterling (£) - - 433,195 (d) 1.75% Euro (€) 78,335 (c) 1.33% 87,074 (d) 1.36% Singapore dollar (SGD) - - 26,191 (d) 1.56% Australian dollar (AUD) 67,212 (c) 3.70% 93,754 (d) 4.42% Hong Kong dollar (HKD) 57,390 (c) 1.31% 34,515 (d) 1.53% Japanese yen (JPY) 12,858 (c) 1.21% - - Canadian dollar (CAD) 14,873 (c) 2.32% - - Total $ 696,668 1.53% $ 709,729 2.02% Base Rate Borrowing(b) U.S. dollar ($) $ 28,000 3.35% $ 14,000 3.50% Total borrowings $ 724,668 1.60% $ 723,729 2.05% (a) The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points and 125 basis points as of December 31, 2013 and 2012, respectively, which are based on the credit rating of our long-term debt. (b) The interest rates for the base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points and 25 basis points as of December 31, 2013 and 2012, respectively, which are based on the credit rating of our long-term debt. (c) Based on exchange rates of $1.37 to £1.00, $0.89 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.94 to 1.00 CAD as of December 31, 2013. (d) Based on exchange rates of $1.63 to £1.00, $1.32 to €1.00, $0.82 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD as of December 31, 2012.

[3] The interest rates for floating rate borrowings under the global revolving credit facility equal the applicable index plus a margin of 110 basis points and 125 basis points as of December 31, 2013 and 2012, respectively, which are based on the credit rating of our long-term debt.

[4] The interest rates for base rate borrowings under the global revolving credit facility equal the U.S. Prime Rate plus a margin of 10 basis points and 25 basis points as of December 31, 2013 and 2012, respectively, which are based on the credit rating of our long-term debt.

[5] Based on exchange rates of $1.63 to £1.00, $1.32 to €1.00, $0.82 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of December 31, 2012.

[6] Based on exchange rate of $1.37 to €1.00 as of December 31, 2013 and $1.32 to €1.00 as of December 31, 2012.