Fair Value of Financial Instruments Fair Value Measurements and Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 33,086	$ 58,434
Derivative Liability, Fair Value, Gross Liability	400,431	134,511
Derivative, Fair Value, Net	(367,345)
Derivative Financial Instrument Net Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in unrealized gains (losses) relating to assets (liabilities) still held as of period end, included in statement of operations line item;	(35,108)	0	$ (22,694)
Fair Value, Measured With Unobservable Input Reconcilition, Recurring Basis, Net Asset Value	(62,540)	(8,427)	8,414
Derivative Financial Instruments, Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measured With Unobservable Input Reconcilition, Recurring Basis, Net Asset Value		(8,427)	8,414	$ 58,329
Commodity Price Risk Management, net | Derivative Financial Instrument Net Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in unrealized gains (losses) relating to assets (liabilities) still held as of period end, included in statement of operations line item;	(35,108)	0	(22,694)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Net Assets, Gain (Loss) Included in Earnings	(206,109)	37,821	(41,749)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Net Asset, Purchases, Sales, Issues, Settlements	151,996	(54,662)	$ (8,166)
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	33,086	58,434
Derivative Liability, Fair Value, Gross Liability	(400,431)	(134,511)
Fair Value | Non Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	(95,561)	(36,359)
Fair Value | Non Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	15,177	9,565
Fair Value | Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	17,909	48,869
Fair Value | Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	(304,870)	(98,152)
Fair Value | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	605	36,895
Derivative Liability, Fair Value, Gross Liability	(305,410)	(104,545)
Fair Value | Significant Other Observable Inputs (Level 2) | Non Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	(74,715)	(28,125)
Fair Value | Significant Other Observable Inputs (Level 2) | Non Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	605	315
Fair Value | Significant Other Observable Inputs (Level 2) | Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	36,580
Fair Value | Significant Other Observable Inputs (Level 2) | Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	(230,695)	(76,420)
Fair Value | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	32,481	21,539
Derivative Liability, Fair Value, Gross Liability	(95,021)	(29,966)
Fair Value | Significant Unobservable Inputs (Level 3) | Non Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	(20,846)	(8,234)
Fair Value | Significant Unobservable Inputs (Level 3) | Non Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	14,572	9,250
Fair Value | Significant Unobservable Inputs (Level 3) | Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	17,909	12,289
Fair Value | Significant Unobservable Inputs (Level 3) | Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	(74,175)	(21,732)
1.125% Convertible Senior Notes due 2021 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes fair value	$ 0	$ 196,200
Senior Notes Percent of Par	0.00%	98.10%
6.125% Senior Notes due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes fair value	$ 202,800	$ 410,800
Senior Notes Percent of Par	101.40%	102.70%
5.75% Senior Notes due 2026 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes fair value	$ 775,500	$ 775,500
Senior Notes Percent of Par	103.40%	103.40%
6.25% Senior Notes due 2025 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes fair value	$ 0	$ 102,800
Senior Notes Percent of Par	0.00%	100.50%