Capital And Accumulated Other Comprehensive Loss (Schedule Of Distributions) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended			6 Months Ended	12 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended	3 Months Ended			6 Months Ended	12 Months Ended	3 Months Ended				6 Months Ended		12 Months Ended	0 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	0 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	3 Months Ended				6 Months Ended		3 Months Ended				6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013 Series D Cumulative Convertible Preferred Units [Member]	Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member]	Jun. 30, 2013 Series D Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2012 Series D Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]	Jun. 30, 2013 Series E Cumulative Convertible Preferred Units [Member]	Mar. 31, 2013 Series E Cumulative Convertible Preferred Units [Member]		Jun. 30, 2013 Series E Cumulative Convertible Preferred Units [Member]	Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member]	Jun. 30, 2013 Series E Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]		Mar. 31, 2013 Series E Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]		Jun. 30, 2013 Series E Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]		Dec. 31, 2012 Series E Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]	Jun. 30, 2013 Series F Cumulative Convertible Preferred Units [Member]	Mar. 31, 2013 Series F Cumulative Convertible Preferred Units [Member]		Jun. 30, 2013 Series F Cumulative Convertible Preferred Units [Member]	Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member]	Jun. 30, 2013 Series F Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]		Mar. 31, 2013 Series F Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]		Jun. 30, 2013 Series F Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]		Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member] Digital Realty Trust, L.P. [Member]	Apr. 09, 2013 Series G Cumulative Convertible Preferred Units [Member] [Member]	Jun. 30, 2013 Series G Cumulative Convertible Preferred Units [Member] [Member]		Jun. 30, 2013 Series G Cumulative Convertible Preferred Units [Member] [Member]		Dec. 31, 2012 Series G Cumulative Convertible Preferred Units [Member] [Member]	Apr. 09, 2013 Series G Cumulative Convertible Preferred Units [Member] [Member] Digital Realty Trust, L.P. [Member]	Jun. 30, 2013 Series G Cumulative Convertible Preferred Units [Member] [Member] Digital Realty Trust, L.P. [Member]		Jun. 30, 2013 Series G Cumulative Convertible Preferred Units [Member] [Member] Digital Realty Trust, L.P. [Member]		Dec. 31, 2012 Series G Cumulative Convertible Preferred Units [Member] [Member] Digital Realty Trust, L.P. [Member]	Jun. 30, 2013 Common Stock [Member]		Mar. 31, 2013 Common Stock [Member]		Jun. 30, 2013 Common Stock [Member]		Jun. 30, 2013 Common Stock [Member] Digital Realty Trust, L.P. [Member]		Mar. 31, 2013 Common Stock [Member] Digital Realty Trust, L.P. [Member]		Jun. 30, 2013 Common Stock [Member] Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	May 01, 2013	Feb. 12, 2013
Dividend/Distribution payable date	Jun. 28, 2013	Mar. 29, 2013
Dividends/Distributions, preferred stock/units							$ 5,031	$ 5,031	[1]	$ 10,062		$ 5,031	[1]	$ 5,031	[1]	$ 10,062	[1]		$ 3,023	$ 3,023	[2]	$ 6,046		$ 3,023	[2]	$ 3,023	[2]	$ 6,046	[2]			$ 3,345	[3],[4]	$ 3,345	[3]			$ 3,345	[3],[4]	$ 3,345	[3]								$ 102,507	[5]	$ 102,506	[5]	$ 205,013	[5]
Dividends/Distributions, common stock/units																																											$ 100,169	[5]	$ 100,165	[5]	$ 200,334	[5]
Preferred stock dividend per share amount										$ 1.750						$ 1.750						$ 1.656						$ 1.656			$ 1.46875			$ 1.469			$ 1.46875			$ 1.469
Common Units, annual rate of distribution per unit																																															$ 3.120						$ 3.120
Preferred stock, redemption price per share																																$ 25.00		$ 25.00
Preferred stock, dividend rate			5.50%	5.50%	5.50%	5.50%				7.00%	7.00%					7.00%		7.00%				6.625%	6.625%					6.625%		6.625%	5.875%			5.875%		5.875%	5.875%			5.875%		5.875%
Shares issued upon conversion																																0.7532		0.7532

[1] $1.750 annual rate of dividend per share.

[2] $1.656 annual rate of dividend per share.

[3] $1.469 annual rate of dividend per share.

[4] Represents a pro rata dividend from and including the original issue date to and including June 30, 2013.

[5] $3.120 annual rate of dividend per share.