Consolidated Statement of Partners' Capital (USD $) In Thousands, except Share data	Total	DuPont Fabros Technology, L.P. [Member]	DuPont Fabros Technology, L.P. [Member] Limited Partners' Capital - Preferred [Member]	DuPont Fabros Technology, L.P. [Member] Limited Partners' Capital - Common [Member]	DuPont Fabros Technology, L.P. [Member] General Partner's Capital [Member]
Balance at Dec. 31, 2012		$ 1,262,136	$ 351,250	$ 901,361	$ 9,525
Balance, units at Dec. 31, 2012				62,678,556	662,373
Net income	32,516	32,516		32,183	333
Common unit distributions		(56,416)		(55,952)	(464)
Preferred unit distributions		(20,433)		(20,224)	(209)
Redemption of operating partnership units, shares	2,904,769	2,904,769		2,904,769
Redemption of operating partnership units	70,200	70,200		70,200
Retirement of OP units for common stock repurchase, units				(1,632,673)
Retirement of OP units for common stock repurchases		(37,792)		(37,792)
Issuance of OP units for stock awards, units				152,931
Issuance of OP units for stock awards		320		320
Issuance of OP units due to option exercises				12,000
Partners' Capital Account, Option Exercise		61		61
Retirement and forfeiture of OP units, units				(55,951)
Retirement and forfeiture of OP units		(1,138)		(1,138)
Amortization of deferred compensation costs	5,286	5,286		5,286
Adjustmenst to redeemable partnership units		(25,591)		(25,391)	(200)
Balance at Sep. 30, 2013		1,229,149	351,250	868,914	8,985
Balance, units at Sep. 30, 2013				64,059,632	662,373
Balance at Jun. 30, 2013
Net income	(5,958)	(5,958)
Balance at Sep. 30, 2013		$ 1,229,149	$ 351,250