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Long-term Debt - Narrative (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 29, 2021 | Jun. 28, 2021 | Mar. 04, 2021 | Mar. 31, 2021 | May 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  | $ 1,260,000,000 |  |  |  |  |  |
Premiums paid over face value |  |  | 97,900,000 |  |  |  |  |  |
Payment of accrued interest |  |  | 12,500,000 |  |  |  |  |  |
Payments of debt issuance costs |  |  | 1,100,000 |  |  |  |  |  |
Loss on early extinguishment of debt |  |  |  |  |  | $ (352,599,000) | $ (861,000) | $ 0 |
Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Bank credit facility |  |  |  |  |  | $ 1,400,000,000 |  |  |
Weighted average interest rate on borrowings |  |  |  |  |  | 2.71% | 3.48% |  |
Minimum | Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Commitment fee on unused borrowing base |  |  |  |  |  | 0.375% |  |  |
Leverage ratio |  |  |  |  |  | 100.00% |  |  |
Current ratio |  |  |  |  |  | 100.00% |  |  |
Maximum | Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Commitment fee on unused borrowing base |  |  |  |  |  | 0.50% |  |  |
Leverage ratio |  |  |  |  |  | 400.00% |  |  |
Current ratio |  |  |  |  |  | 100.00% |  |  |
LIBOR | Minimum | Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread rate for interest rate on credit facility |  |  |  |  |  | 2.25% |  |  |
LIBOR | Maximum | Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread rate for interest rate on credit facility |  |  |  |  |  | 3.25% |  |  |
Base Rate | Minimum | Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread rate for interest rate on credit facility |  |  |  |  |  | 1.25% |  |  |
Base Rate | Maximum | Bank credit facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread rate for interest rate on credit facility |  |  |  |  |  | 2.25% |  |  |
7.5% Senior Notes due 2025 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate on debt instrument |  |  |  | 7.50% |  |  |  |  |
Repayments of long-term debt |  |  | 375,000,000 |  |  |  |  |  |
Early repayment of senior debt |  |  |  |  | $ 5,600,000 |  |  |  |
Principal amount of long term debt retired |  |  |  |  | 4,200,000 |  |  |  |
Loss on early extinguishment of debt |  |  |  |  | $ (900,000) |  |  |  |
7.5% Senior Notes due 2025 | Common Stock |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt conversion, converted instrument, shares of common stock issued (in shares) |  |  |  |  | 767,096 |  |  |  |
Amount of debt converted |  |  |  |  | $ 5,000,000 |  |  |  |
9.75% Senior Notes Due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | $ 800,000,000 |  |
Interest rate on debt instrument |  |  |  | 9.75% |  |  |  |  |
Proceeds of issued senior notes |  |  |  |  |  |  | $ 737,100,000 |  |
Repayments of long-term debt | $ 978,600,000 |  | $ 777,100,000 |  |  |  |  |  |
Premiums paid over face value | 74,000,000 |  |  |  |  |  |  |  |
Payment of accrued interest | $ 31,700,000 |  |  |  |  |  |  |  |
Loss on early extinguishment of debt |  |  |  |  |  | $ (352,600,000) |  |  |
6.75% Senior Notes Due 2029 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 1,250,000,000 |  |  |  |  |
Interest rate on debt instrument |  |  |  | 6.75% |  |  |  |  |
Proceeds of issued senior notes |  |  |  | $ 1,240,000,000 |  |  |  |  |
5.875% Senior Notes Due 2030 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  | $ 965,000,000
Interest rate on debt instrument |  | 5.875% |  |  |  |  |  |  |
Proceeds of issued senior notes |  | $ 949,500,000 |  |  |  |  |  |  |

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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 + Details
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
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