Long-Term Debt (Details Textuals) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended		0 Months Ended						1 Months Ended					0 Months Ended			6 Months Ended			6 Months Ended
	Jun. 30, 2014 Rate	Jun. 30, 2013	Jun. 30, 2014 Rate	Jun. 30, 2013	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Rate	Jun. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Rate	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period One [Member] Rate	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period Two [Member] Rate	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period Three [Member] Rate	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period Four [Member] Rate	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Initial Redemption Period with Proceeds from Equity Offering [Member] Rate	Apr. 30, 2014 5 1/2% Senior Subordinated Notes Due 2022 [Member] Initial Redemption Period with Make-Whole Premium [Member] Rate	Feb. 28, 2013 4 5/8% Senior Subordinated Notes Due 2023 [Member] Rate	Jun. 30, 2014 4 5/8% Senior Subordinated Notes Due 2023 [Member] Rate	Mar. 31, 2013 9 3/4% Senior Subordinated Notes due 2016 [Member]	Jun. 30, 2013 9 1/2% Senior Subordinated Notes due 2016 [Member]	Mar. 31, 2013 9 1/2% Senior Subordinated Notes due 2016 [Member]	Apr. 30, 2014 8 1/4% Senior Subordinated Notes due 2020 [Member] Rate	Jun. 30, 2014 8 1/4% Senior Subordinated Notes due 2020 [Member] Rate	May 30, 2014 8 1/4% Senior Subordinated Notes due 2020 [Member]	Jun. 30, 2014 Bank Credit Agreement [Member] Rate	May 07, 2014 Bank Credit Agreement [Member]	Mar. 31, 2010 Bank Credit Agreement [Member]	Jun. 30, 2014 Bank Credit Agreement [Member] Minimum [Member] Rate	Jun. 30, 2014 Bank Credit Agreement [Member] Maximum [Member] Rate
Long Term Debt (Textuals) [Abstract]
Interest in guarantor subsidiaries	100.00%		100.00%
Face Value of Notes Issued					$ 1,250,000,000								$ 1,200,000,000					$ 996,273,000
Debt Instrument, Interest Rate, Stated Percentage						5.50%								4.625%					8.25%
Selling Price Of Debt Instrument					100.00%								100.00%
Proceeds from issuance of subordinated long term debt, net of commissions and fees					1,230,000,000								1,180,000,000
Debt Instrument, Redemption Price, Percentage							104.125%	102.75%	101.375%	100.00%	105.50%	100.00%
Debt Instrument, Percentage of Principal Amount Available To Be Redeemed											35.00%	100.00%
Debt Instrument, Repurchased Face Amount															426,400,000	38,200,000	186,700,000	815,200,000		181,100,000
Debt Instrument Redemption Price Percentage Make Whole Premium																		100.00%
Loss on early extinguishment of debt	113,908,000	428,000	113,908,000	44,651,000
$1.6 Billion Revolving Credit Facility [Abstract]
Borrowing Base of Denbury credit facility																						$ 1,600,000,000	$ 1,600,000,000
Weighted average interest rate on Bank Credit Facility																					2.14%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage																								0.375%	0.50%