Consolidated Statements of Operations (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues and other income
Oil, natural gas, and related product sales	$ 2,269,151,000	$ 1,793,292,000	$ 866,709,000
CO2 sales and transportation fees	22,711,000	19,204,000	13,422,000
Gain on sale of interests in Genesis	0	101,537,000	0
Interest income and other income	17,462,000	7,758,000	9,019,000
Total revenues and other income	2,309,324,000	1,921,791,000	889,150,000
Expenses
Lease operating expenses	507,397,000	470,364,000	314,689,000
Marketing expenses	26,047,000	31,036,000	16,890,000
CO2 discovery and operating expenses	14,258,000	7,801,000	4,262,000
Taxes other than income	147,534,000	120,541,000	43,267,000
General and administrative	125,525,000	134,121,000	101,785,000
Interest, net of amounts capitalized of $61,586, $66,815 and $68,596, respectively	164,360,000	176,113,000	47,430,000
Depletion, depreciation and amortization	409,196,000	434,307,000	238,323,000
Derivatives expense (income)	(52,497,000)	(23,833,000)	236,226,000
Loss on early extinguishment of debt	16,131,000	0	0
Transaction and other costs related to the Encore Merger	4,377,000	92,271,000	8,467,000
Impairment of assets	22,951,000	0	0
Total expenses	1,385,279,000	1,442,721,000	1,011,339,000
Income (loss) before income taxes	924,045,000	479,070,000	(122,189,000)
Income tax provision (benefit)
Current income taxes	8,249,000	33,194,000	4,611,000
Deferred income taxes	342,463,000	160,349,000	(51,644,000)
Consolidated net income (loss)	573,333,000	285,527,000	(75,156,000)
Net income attributable to noncontrolling interest	0	(13,804,000)	0
Net income (loss) attributable to Denbury stockholders	$ 573,333,000	$ 271,723,000	$ (75,156,000)
Net income (loss) per common share - basic	$ 1.45	$ 0.73	$ (0.30)
Net income (loss) per common share - diluted	$ 1.43	$ 0.72	$ (0.30)
Weighted average common shares outstanding
Basic	396,023,000	370,876,000	246,917,000
Diluted	400,958,000	376,255,000	246,917,000