Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Mortgage Loans) (Details)								3 Months Ended				3 Months Ended				3 Months Ended				3 Months Ended				3 Months Ended				3 Months Ended		3 Months Ended				3 Months Ended				3 Months Ended				3 Months Ended		3 Months Ended		3 Months Ended						3 Months Ended
	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2014 Digital Realty Trust, L.P. [Member] USD ($)	Dec. 31, 2013 Digital Realty Trust, L.P. [Member] USD ($)	Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] USD ($)	Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Secured Term Debt [Member] USD ($) item property		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Secured Term Debt [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 200 Paul Avenue [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 200 Paul Avenue [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2045 & 2055 LaFayette Street [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2045 & 2055 LaFayette Street [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 34551 Ardenwood Boulevard 1-4 [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 34551 Ardenwood Boulevard 1-4 [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1100 Space Park Drive [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1100 Space Park Drive [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 600 West Seventh Street [Member] USD ($)	Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 600 West Seventh Street [Member] USD ($)	Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 150 South First Street [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 150 South First Street [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2334 Lundy Place [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2334 Lundy Place [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Cressex 1 [Member] USD ($)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Cressex 1 [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 636 Pierce Street [Member]	Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 636 Pierce Street [Member] USD ($)	Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 8025 North Interstate 35 [Member] USD ($)	Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 8025 North Interstate 35 [Member] USD ($)	Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Manchester Technopark [Member] USD ($) property		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Manchester Technopark [Member] GBP (£)		Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Manchester Technopark [Member] USD ($)		Mar. 31, 2014 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 731 East Trade Street [Member] USD ($)	Dec. 31, 2013 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 731 East Trade Street [Member] USD ($)	Mar. 31, 2014 GBP [Member] Digital Realty Trust, L.P. [Member] USD ($)	Dec. 31, 2013 GBP [Member] Digital Realty Trust, L.P. [Member] USD ($)	Mar. 31, 2014 EUR [Member] Digital Realty Trust, L.P. [Member] USD ($)	Dec. 31, 2013 EUR [Member] Digital Realty Trust, L.P. [Member] USD ($)
Debt Instrument [Line Items]
Interest rate at period end								5.65%	[1],[2]			5.74%	[1]			5.93%	[1],[3]			5.95%	[1]			5.89%	[1]			5.80%		6.30%	[1]			5.96%	[1]			5.68%	[4]			5.27%		4.09%		5.68%	[4]	5.68%	[4]			8.22%
Maturity Date								Nov. 11, 2014	[1],[2]			Oct. 08, 2015	[1]			Feb. 06, 2017	[1]			Nov. 11, 2016	[1]			Dec. 11, 2016	[1]			Mar. 15, 2016		Feb. 06, 2017	[1]			Nov. 11, 2016	[1]			Oct. 16, 2014	[4]			Apr. 15, 2023		Mar. 06, 2016		Oct. 16, 2014	[4]	Oct. 16, 2014	[4]			Jul. 01, 2020
Unamortized net premium			$ 689,000		$ 689,000	[5]	$ 2,359,000
Mortgage loans, net of premiums	554,742,000	585,608,000	554,742,000	585,608,000	554,742,000		585,608,000	132,157,000	[1],[2]	132,966,000	[1],[2]	70,198,000	[1]	70,713,000	[1]	63,351,000	[1]	63,623,000	[1]	51,942,000	[1]	52,152,000	[1]	51,904,000	[1]	52,115,000	[1]	49,127,000	49,548,000	49,896,000	[1]	50,097,000	[1]	37,778,000	[1]	37,930,000	[1]	28,636,000	[4],[6]	28,583,000	[4],[6]		26,327,000	6,251,000	6,314,000	8,712,000	[4],[6]			8,695,000	[4],[6]	4,101,000	4,186,000
Mortgage loans on real estate, number								6
Number of properties								6																																						2		2
Exchange rate																																																						1.67	1.66	1.38	1.37
Letter of credit security amount																																																7,800,000
Total indebtedness			$ 5,007,381,000	$ 4,961,892,000	$ 554,742,000	[5]

[1] The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

[2] This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.

[3] 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.

[4] These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.

[5] Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of March 31, 2014, we provided partial letter of credit support with respect to approximately $37.3 million of the outstanding mortgage indebtedness (based on exchange rates as of March 31, 2014).

[6] Based on exchange rate of $1.67 to £1.00 as of March 31, 2014 and $1.66 to £1.00 as of December 31, 2013.