Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
ASSETS
Land	$ 75,956		$ 73,197
Buildings and improvements	2,419,359		2,315,499
Income producing property	2,495,315		2,388,696
Less: accumulated depreciation	(369,420)		(325,740)
Net income producing property	2,125,895		2,062,956
Construction in progress and land held for development	135,950	[1]	218,934
Net real estate	2,261,845		2,281,890
Cash and cash equivalents	14,373		23,578
Rents and other receivables	8,808		3,840
Deferred rent	149,771		144,829
Lease contracts above market value, net	9,704		10,255
Deferred costs, net	33,628		35,670
Prepaid expenses and other assets	42,300		30,797
Total assets	2,520,429		2,530,859
Liabilities:
Line of credit	60,000		18,000
Mortgage notes payable	115,000		139,600
Unsecured notes payable	550,000		550,000
Accounts payable and accrued liabilities	24,416		22,280
Construction costs payable	5,762		6,334
Accrued interest payable	2,347		2,601
Dividend and distribution payable	25,901		22,177
Lease contracts below market value, net	12,276		14,022
Prepaid rents and other liabilities	50,770		35,524
Total liabilities	846,472		810,538
Redeemable noncontrolling interests - operating partnership	383,877		453,889
Commitments and contingencies	0		0
Stockholders’ equity:
Common stock, $.001 par value, 250,000,000 shares authorized, 64,645,117 shares issued and outstanding at March 31, 2013 and 63,340,929 shares issued and outstanding at December 31, 2012	65		63
Additional paid in capital	938,765		915,119
Retained earnings (accumulated deficit)	0		0
Total stockholders’ equity	1,290,080		1,266,432
Total liabilities and stockholders’ equity	2,520,429		2,530,859
Series A cumulative redeemable perpetual preferred stock [Member]
Stockholders’ equity:
Preferred stock, $.001 par value, 50,000,000 shares authorized	185,000		185,000
Series B cumulative redeemable perpetual preferred stock [Member]
Stockholders’ equity:
Preferred stock, $.001 par value, 50,000,000 shares authorized	166,250		166,250
DuPont Fabros Technology, L.P. [Member]
ASSETS
Land	75,956		73,197
Buildings and improvements	2,419,359		2,315,499
Income producing property	2,495,315		2,388,696
Less: accumulated depreciation	(369,420)		(325,740)
Net income producing property	2,125,895		2,062,956
Construction in progress and land held for development	135,950		218,934
Net real estate	2,261,845		2,281,890
Cash and cash equivalents	10,077		19,282
Rents and other receivables	8,808		3,840
Deferred rent	149,771		144,829
Lease contracts above market value, net	9,704		10,255
Deferred costs, net	33,628		35,670
Prepaid expenses and other assets	42,300		30,797
Total assets	2,516,133		2,526,563
Liabilities:
Line of credit	60,000		18,000
Mortgage notes payable	115,000		139,600
Unsecured notes payable	550,000		550,000
Accounts payable and accrued liabilities	24,416		22,280
Construction costs payable	5,762		6,334
Accrued interest payable	2,347		2,601
Dividend and distribution payable	25,901		22,177
Lease contracts below market value, net	12,276		14,022
Prepaid rents and other liabilities	50,770		35,524
Total liabilities	846,472		810,538
Redeemable noncontrolling interests - operating partnership	383,877		453,889
Redeemable partnership units	383,877		453,889
Commitments and contingencies	0		0
Stockholders’ equity:
Total liabilities and stockholders’ equity	2,516,133		2,526,563
Partners’ capital:
General partner’s capital, common units, 662,373 issued and outstanding at March 31, 2013 and December 31, 2012	9,567		9,525
Total partners’ capital	1,285,784		1,262,136
DuPont Fabros Technology, L.P. [Member] | Series A cumulative redeemable perpetual preferred units [Member]
Partners’ capital:
Limited partners' capital	185,000		185,000
DuPont Fabros Technology, L.P. [Member] | Series B cumulative redeemable perpetual preferred units [Member]
Partners’ capital:
Limited partners' capital	166,250		166,250
DuPont Fabros Technology, L.P. [Member] | Limited partners' common units [Member]
Partners’ capital:
Limited partners' capital	924,967		901,361
DuPont Fabros Technology, L.P. [Member] | Series A cumulative redeemable perpetual preferred stock [Member]
Partners’ capital:
Limited partners' capital	185,000		185,000
DuPont Fabros Technology, L.P. [Member] | Series B cumulative redeemable perpetual preferred stock [Member]
Partners’ capital:
Limited partners' capital	$ 166,250		$ 166,250

[1] (1)Properties located in Ashburn, VA (ACC7 and ACC8); Piscataway, NJ (NJ1 Phase II) and Santa Clara, CA (SC1 Phase II and SC2).