Debt Of The Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) (Global Revolving Credit Facility [Member], Digital Realty Trust, L.P. [Member], USD $)	3 Months Ended
	Mar. 31, 2014 item		Dec. 31, 2013		Aug. 15, 2013	Aug. 14, 2013
Debt Instrument [Line Items]
Revolving credit facility borrowing capacity					$ 2,000,000,000	$ 1,800,000,000
Maturity date	Nov. 03, 2017
Number of extension options	2
Revolving credit facility commitments extension	6 months
Interest rate basis spread	1.10%
Basis rate for unused portion of the credit facility	0.20%
Weighted-average interest rate	1.61%		1.60%
Capitalized financing costs related to global revolving facilities	18,000,000
Principal outstanding	790,500,000	[1]	724,668,000	[1]
Letter of credit security amount	23,100,000
Base Rate [Member]
Debt Instrument [Line Items]
Interest rate basis spread	0.10%
Weighted-average interest rate	3.35%
Accordian Feature [Member]
Debt Instrument [Line Items]
Revolving credit facility borrowing capacity					2,550,000,000
USD [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.25%
USD [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	3.35%	[2]	3.35%	[2]
Principal outstanding	$ 5,000,000	[2]	$ 28,000,000	[2]
GBP [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.60%
EUR [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.33%
AUD [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	3.73%
HKD [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.31%
JPY [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	1.20%
CAD [Member]
Debt Instrument [Line Items]
Weighted-average interest rate	2.32%

[1] 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.

[2] 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.