Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Global Revolving Credit Facility) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 item		Dec. 31, 2013
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	$ 790,500	[2]	$ 724,668	[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	1.61%		1.60%
Basis spread on variable rate	1.10%
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	785,500	[3]	696,668	[3]
Weighted-average interest rate	1.60%	[3]	1.53%	[3]
Basis spread on variable rate	1.10%
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	3.35%
Basis spread on variable rate	0.10%
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.25%
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	397,000	[3]	466,000	[3]
Weighted-average interest rate	1.25%	[3]	1.27%	[3]
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	5,000	[4]	28,000	[4]
Weighted-average interest rate	3.35%	[4]	3.35%	[4]
GBP [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	1.67		1.66
GBP [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.60%
GBP [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	126,631	[3],[5]
Weighted-average interest rate	1.60%	[3]
EUR [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	1.38		1.37
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	74,353	[3],[5]	78,335	[3],[6]
Weighted-average interest rate	1.33%	[3]	1.33%	[3]
SGD [Member]
Debt Instrument [Line Items]
Exchange rate	0.80		0.79
SGD [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	0.80		0.79
AUD [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	0.93		0.89
AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	3.73%
AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	73,185	[3],[5]	67,212	[3],[6]
Weighted-average interest rate	3.73%	[3]	3.70%	[3]
HKD [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	0.13		0.13
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	66,677	[3],[5]	57,390	[3],[6]
Weighted-average interest rate	1.31%	[3]	1.31%	[3]
JPY [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	0.01		0.01
JPY [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.20%
JPY [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member] | Floating Rate [Member]
Debt Instrument [Line Items]
Balance/Principal Outstanding	13,174	[3],[5]	12,858	[3],[6]
Weighted-average interest rate	1.20%	[3]	1.21%	[3]
CAD [Member] | Digital Realty Trust, L.P. [Member]
Debt Instrument [Line Items]
Exchange rate	0.90		0.94
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	$ 34,480	[3],[5]	$ 14,873	[3],[6]
Weighted-average interest rate	2.32%	[3]	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 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 ($) $ 397,000 1.25% $ 466,000 1.27% British pound sterling (£) 126,631 (c) 1.60% - - Euro (€) 74,353 (c) 1.33% 67,212 (d) 1.33% Australian dollar (AUD) 73,185 (c) 3.73% 67,212 (d) 3.70% Hong Kong dollar (HKD) 66,677 (c) 1.31% 57,390 (d) 1.31% Japanese yen (JPY) 13,174 (c) 1.20% 12,858 (d) 1.21% Canadian dollar (CAD) 34,480 (c) 2.32% 14,873 (d) 2.32% Total 785,500 (c) 1.60% 696,668 1.53% Base Rate Borrowing (b) U.S. dollar ($) $ 5,000 3.35% $ 28,000 3.35% Total borrowings $ 790,500 1.61% $ 724,668 1.60% (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, which is based on the credit rating of our long-term debt. (b) 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, which is based on the credit rating of our long-term debt. (c) Based on exchange rates of $1.67 to £1.00, $1.38 to €1.00, $0.93 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.90 to 1.00 CAD, respectively, as of March 31, 2014. (d) 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, respectively, as of December 31, 2013.

[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, which is 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, which is based on the credit rating of our long-term debt.

[5] Based on exchange rates of $1.67 to £1.00, $1.38 to €1.00, $0.93 to 1.00 AUD, $0.13 to 1.00 HKD, $0.01 to 1.00 JPY and $0.90 to 1.00 CAD, respectively, as of March 31, 2014.

[6] 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, respectively, as of December 31, 2013.