Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Base rent	$ 61,710	$ 55,773	$ 122,193	$ 108,943
Recoveries from tenants	29,047	25,728	55,386	49,814
Other revenues	807	1,157	1,744	2,283
Total revenues	91,564	82,658	179,323	161,040
Expenses:
Property operating costs	24,767	23,473	48,279	45,836
Real estate taxes and insurance	3,673	2,413	7,314	4,584
Depreciation and amortization	23,196	22,484	46,235	44,354
General and administrative	4,332	4,505	8,882	9,741
Other expenses	585	744	1,357	1,412
Total expenses	56,553	53,619	112,067	105,927
Operating income	35,011	29,039	67,256	55,113
Interest income	16	45	53	79
Interest:
Expense incurred	(12,505)	(12,674)	(25,442)	(24,537)
Amortization of financing costs including write-offs	(775)	(916)	(3,393)	(1,803)
Net income	21,747	15,494	38,474	28,852
Net income attributable to redeemable noncontrolling interests – operating partnership	(2,965)	(2,006)	(4,938)	(3,576)
Net income attributable to controlling interests	18,782	13,488	33,536	25,276
Preferred stock dividends	(6,811)	(6,811)	(13,622)	(13,430)
Net income attributable to common shares	11,971	6,677	19,914	11,846
Earnings per share – basic:
Net income attributable to common shares	$ 0.19	$ 0.11	$ 0.31	$ 0.19
Weighted average common shares outstanding	64,380,566	62,897,982	64,733,309	62,733,265
Earnings per share – diluted:
Net income attributable to common shares	$ 0.18	$ 0.11	$ 0.30	$ 0.19
Weighted average common shares outstanding	65,188,907	63,749,724	65,556,852	63,648,912
Dividends declared per common share	$ 0.25	$ 0.15	$ 0.45	$ 0.27
Earnings per unit – diluted:
Weighted average common units outstanding	80,311,476	81,771,775	80,781,930	81,672,861
DuPont Fabros Technology, L.P. [Member]
Revenues:
Base rent	61,710	55,773	122,193	108,943
Recoveries from tenants	29,047	25,728	55,386	49,814
Other revenues	807	1,157	1,744	2,283
Total revenues	91,564	82,658	179,323	161,040
Expenses:
Property operating costs	24,767	23,473	48,279	45,836
Real estate taxes and insurance	3,673	2,413	7,314	4,584
Depreciation and amortization	23,196	22,484	46,235	44,354
General and administrative	4,332	4,505	8,882	9,741
Other expenses	585	744	1,357	1,412
Total expenses	56,553	53,619	112,067	105,927
Operating income	35,011	29,039	67,256	55,113
Interest income	16	45	53	79
Interest:
Expense incurred	(12,505)	(12,674)	(25,442)	(24,537)
Amortization of financing costs including write-offs	(775)	(916)	(3,393)	(1,803)
Net income	21,747	15,494	38,474	28,852
Preferred stock dividends	(6,811)	(6,811)	(13,622)	(13,430)
Net income attributable to common units	$ 14,936	$ 8,683	$ 24,852	$ 15,422
Earnings per unit – basic:
Net income attributable to common units	$ 0.19	$ 0.11	$ 0.31	$ 0.19
Weighted average common units outstanding	80,311,476	81,771,775	80,781,930	81,672,861
Earnings per unit – diluted:
Net income attributable to common units	$ 0.18	$ 0.11	$ 0.30	$ 0.19
Weighted average common units outstanding	81,119,817	82,623,517	81,605,473	82,588,508
Distributions declared per unit	$ 0.25	$ 0.15	$ 0.45	$ 0.27