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LONG-TERM DEBT - Narrative (Details) |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 01, 2021 USD ($) | Oct. 13, 2021 USD ($) agency | Apr. 01, 2021 USD ($) agency | Mar. 31, 2021 USD ($) | Jun. 30, 2020 | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Mar. 08, 2022 USD ($)
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  | $ 16,000,000 | $ 3,800,000 | $ 5,100,000 |
Capitalized interest |  |  |  |  |  | 6,300,000 | 1,800,000 | $ 2,400,000 |
Revolver |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Minimum current ratio covenant | 1.00 |  |  |  |  |  |  |  |
Credit facility outstanding |  |  |  |  |  | 0 | 0 |  |
Revolver | Subsequent Event |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Credit facility outstanding |  |  |  |  |  |  |  |  | $ 0
Revolver | LIBOR | Minimum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 0.00% |  |  |  |
Revolver | Eurodollar | Minimum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 2.00% |  |  |  |
Revolver | Eurodollar | Maximum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 3.00% |  |  |  |
Revolver | Reference Rate | Minimum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 1.00% |  |  |  |
Revolver | Reference Rate | Maximum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  | 2.00% |  |  |  |
Amended Credit Agreement | Revolver |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Elected commitments | $ 800,000,000 |  | $ 400,000,000 |  |  |  |  |  |
Maximum borrowing capacity | $ 2,000,000,000.0 |  |  |  |  |  |  |  |
Maximum pro-forma leverage ratio, criteria one, if circumstances met | 1.50 |  |  |  |  |  |  |  |
Minimum pro-forma leverage ratio, criteria two, if circumstances met | 1.50 |  |  |  |  |  |  |  |
Covenant, minimum percentage of mortgage on total value of certain proved oil and gas properties | 90.00% |  |  |  |  |  |  |  |
Amended Credit Agreement | HighPoint | Revolver |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Borrowing base amount | $ 1,000,000,000 |  | 500,000,000 | $ 260,000,000 |  |  |  |  |
Maximum borrowing capacity |  |  | $ 1,000,000,000.0 | $ 750,000,000.0 |  |  |  |  |
Maximum net leverage ratio |  |  | 3.0 | 3.50 |  |  |  |  |
Borrowing requirement, maximum cash balance |  |  | $ 500,000,000 |  |  |  |  |  |
Unamortized deferred financing costs |  |  |  |  |  | 3,900,000 | 6,800,000 |  |
Amended Credit Agreement | HighPoint | Revolver | Other Noncurrent Assets |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Unamortized deferred financing costs |  |  |  |  |  | 7,500,000 | 700,000 |  |
Amended Credit Agreement | HighPoint | Revolver | Prepaid Expenses and Other Current Assets |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Unamortized deferred financing costs |  |  |  |  |  | $ 2,700,000 | $ 400,000 |  |
Amended Credit Agreement | HighPoint | Revolver | LIBOR | Minimum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.50% | 0.00% |  |  |  |  |
Amended Credit Agreement | HighPoint | Revolver | Eurodollar |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 4.00% | 3.00% |  |  |  |  |
Amended Credit Agreement | HighPoint | Revolver | Reference Rate |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 3.00% | 2.00% |  |  |  |  |
Amended Credit Agreement | HighPoint | Revolver | Base Rate | Minimum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.00% |  |  |  |  |
Amended Credit Agreement | HighPoint | Revolver | Base Rate | Maximum |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.50% |  |  |  |  |  |
Senior Notes | Senior Notes Due 2026, 5.0% |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 5.00% |  |  |  |  |  |  |
Aggregate principal amount |  | $ 400,000,000 |  |  |  |  |  |  |
Covenant, investment-grade rating, number of ratings agencies (at least) | agency |  | 2 |  |  |  |  |  |  |
Unamortized deferred financing costs |  | $ 8,290,000 |  |  |  |  |  |  |
Senior Notes | Senior Notes Due 2026, 5.0%, Indenture |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  | 5.00% |  |  |  |  |  |  |
Senior Notes | Senior Notes Due 2026, 7.50% | HighPoint |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 7.50% |  |  |  |  |  |
Aggregate principal amount |  |  | $ 100,000,000 |  |  |  |  |  |
Unamortized deferred financing costs |  |  | $ 0 |  |  |  |  |  |
Senior Notes | Senior Notes Due 2026, 7.50%, Indenture |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Covenant, investment-grade rating, number of ratings agencies (at least) | agency |  |  | 2 |  |  |  |  |  |
Senior Notes | Senior Notes Due 2026, 7.50%, Indenture | HighPoint |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 7.50% |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period One | Senior Notes Due 2026, 5.0% |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Percentage of principal amount redeemed (up to) |  | 35.00% |  |  |  |  |  |  |
Redemption period, after date of closing of equity offering |  | 180 days |  |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period One | Senior Notes Due 2026, 7.50% | HighPoint |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  | 107.50% |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period Two | Senior Notes Due 2026, 5.0% |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Redemption price, percentage |  | 102.50% |  |  |  |  |  |  |
Percentage of principal amount not redeemed |  | 65.00% |  |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period Two | Senior Notes Due 2026, 7.50% | HighPoint |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  | 100.00% |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period Three | Senior Notes Due 2026, 5.0% |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Redemption price, percentage |  | 101.25% |  |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period Four | Senior Notes Due 2026, 5.0% |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Redemption price, percentage |  | 100.00% |  |  |  |  |  |  |
Senior Notes | Debt Instrument, Redemption, Period Five | Senior Notes Due 2026, 5.0% |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |
Redemption price, percentage |  | 105.00% |  |  |  |  |  |  |

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