Capital And Accumulated Other Comprehensive Income (Loss) (5.875% Series G Cumulative Convertible Preferred Units Narrative) (Details) (Series G Cumulative Convertible Preferred Units [Member], USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Jun. 28, 2013	Dec. 31, 2013	Dec. 31, 2012	Apr. 09, 2013
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date		Apr. 09, 2013
Preferred stock, issued		10,000,000	0	10,000,000
Preferred stock, dividend rate		5.875%	5.875%
Gross proceeds from issuance of redeemable preferred stock		$ 250.0
Preferred stock dividend per share amount	$ 0.334550	$ 1.46875
Preferred stock, liquidation preference per share/unit		$ 25.00	$ 25
Preferred stock, redemption price per share		$ 25.00
Shares issued upon conversion		0.7532
Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date		Apr. 09, 2013
Preferred stock, issued				10,000,000
Preferred stock, dividend rate		5.875%	5.875%
Preferred stock dividend per share amount		$ 1.46875
Preferred stock, liquidation preference per share/unit		$ 25.00	$ 25
Preferred stock, dividends in arrears		$ 0.334550
Preferred stock, redemption price per share		$ 25.00