Debt Of The Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) (Global Revolving Credit Facility [Member], Digital Realty Trust, L.P. [Member], USD $)	12 Months Ended						12 Months Ended
	Dec. 31, 2013 item		Aug. 15, 2013	Aug. 14, 2013	Dec. 31, 2012		Dec. 31, 2013 Base Rate [Member]		Dec. 31, 2012 Base Rate [Member]		Aug. 15, 2013 Accordian Feature [Member]	Dec. 31, 2013	Dec. 31, 2013 EUR [Member]	Dec. 31, 2013 AUD [Member]	Dec. 31, 2013 HKD [Member]	Dec. 31, 2013 JPY [Member]	Dec. 31, 2013 CAD [Member]
Debt Instrument [Line Items]
Revolving credit facility borrowing capacity			$ 2,000,000,000	$ 1,800,000,000							$ 2,550,000,000
Maturity date	Nov. 03, 2017
Number of extension options	2
Revolving credit facility commitments extension	6 months
Interest rate basis spread	1.10%						0.10%		0.25%
Basis rate for unused portion of the credit facility	0.20%
Weighted-average interest rate	1.60%				2.05%		3.35%	[1]	3.50%	[1]		1.27%	1.33%	3.70%	1.31%	1.21%	2.32%
Capitalized financing costs related to global revolving facilities	17,900,000
Principal outstanding	724,668,000	[2]			723,729,000	[2]	28,000,000	[1]	14,000,000	[1]
Letter of credit security amount	$ 20,600,000

[1] 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.

[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.