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LONG-TERM DEBT - Narrative (Details) |  |  |  |  |  | 3 Months Ended | 9 Months Ended |  |  |  |  |  |
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Jun. 29, 2023 USD ($) | May 01, 2022 | Apr. 20, 2022 USD ($) | Nov. 01, 2021 | Oct. 13, 2021 USD ($) agency | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Aug. 02, 2023 USD ($) | Aug. 01, 2023 USD ($) | Jun. 23, 2023 USD ($) bridge_loan_facility | Dec. 31, 2022 USD ($) | Oct. 27, 2022 USD ($) | Apr. 30, 2021 USD ($)
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of senior notes |  |  |  |  |  |  |  | $ 2,666,250,000 | $ 0 |  |  |  |  |  |
Transaction costs |  |  |  |  |  | $ 28,450,000 | $ 1,814,000 | 60,077,000 | 23,766,000 |  |  |  |  |  |
Interest expense |  |  |  |  |  | 76,500,000 | 7,500,000 | 92,700,000 | 24,700,000 |  |  |  |  |  |
Capitalized interest |  |  |  |  |  | 0 | $ 0 | 0 | $ 0 |  |  |  |  |  |
Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum current ratio covenant |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  | $ 4,000,000,000 | $ 2,000,000,000 |  |  |  |
Covenant, minimum percentage of mortgage on total value of certain proved oil and gas properties |  |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |
Maximum net leverage ratio |  |  |  | 3.00 |  |  |  |  |  |  |  |  |  |  |
Borrowing base amount |  |  |  |  |  |  |  |  |  | 3,000,000,000 |  |  |  | $ 1,850,000,000 |
Elected commitments |  |  | $ 1,000,000,000 |  |  |  |  |  |  | $ 1,850,000,000 |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | Fed Funds Effective Rate Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate, floor |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | SOFR | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | SOFR | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | SOFR, Plus Basis Spread One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate, floor |  |  | 1.50% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | SOFR, Plus Basis Spread One | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | Revolving credit facility | SOFR, Plus Basis Spread One | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |
Amended Credit Agreement | HighPoint Merger | Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred financing costs, gross |  |  |  |  |  | 36,100,000 |  | 36,100,000 |  |  |  |  | $ 8,500,000 |  |
Deferred financing costs, net |  |  |  |  |  | 28,600,000 |  | 28,600,000 |  |  |  |  | 5,500,000 |  |
Debt issuance costs |  |  |  |  |  | 7,500,000 |  | 7,500,000 |  |  |  |  | 3,000,000 |  |
Bridge Loans Credit Facilities | Hibernia Acquisition | Bridge Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  | $ 2,700,000,000 |  |  |
Number of separate 364-day bridge loan facilities | bridge_loan_facility |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Total secured leverage test |  |  |  |  |  |  |  |  |  |  |  | 2.00 |  |  |
Transaction costs |  |  |  |  |  | 500,000 |  | 21,000,000 |  |  |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  | 17,103,000 |  | 17,103,000 |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% and Senior Notes due 2031, 8.750% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of senior notes | $ 2,670,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs | $ 33,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% and Senior Notes due 2031, 8.750% | Debt Instrument, Redemption, Period Eight |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of principal amount redeemed | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption period, after date of closing of equity offering | 180 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 8.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount | $ 1,350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  | 5,773,000 |  | 5,773,000 |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% | Debt Instrument, Redemption, Period Four |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 104.188% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% | Debt Instrument, Redemption, Period Five |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 102.094% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% | Debt Instrument, Redemption, Period Six |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2028, 8.375% | Debt Instrument, Redemption, Period Seven |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 108.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of principal amount redeemed | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2031, 8.750% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 8.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount | $ 1,350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  | 5,841,000 |  | 5,841,000 |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2031, 8.750% | Debt Instrument, Redemption, Period Four |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 104.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2031, 8.750% | Debt Instrument, Redemption, Period Five |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 102.188% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2031, 8.750% | Debt Instrument, Redemption, Period Six |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2031, 8.750% | Debt Instrument, Redemption, Period Seven |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage | 108.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of principal amount redeemed | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  | $ 5,489,000 |  | $ 5,489,000 |  |  |  |  | $ 6,707,000 |  |
Senior Notes | Senior Notes due 2026, 5.0% | Debt Instrument, Redemption, Period One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of principal amount redeemed |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |
Redemption period, after date of closing of equity offering |  |  |  |  | 180 days |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2026, 5.0% | Debt Instrument, Redemption, Period Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  |  |  | 102.50% |  |  |  |  |  |  |  |  |  |
Percentage of principal amount not redeemed |  |  |  |  | 65.00% |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2026, 5.0% | Debt Instrument, Redemption, Period Three |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  |  |  | 101.25% |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2026, 5.0% | Debt Instrument, Redemption, Period Four |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2026, 5.0% | Debt Instrument, Redemption, Period Five |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  |  |  | 105.00% |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes due 2026, 7.50% | HighPoint Merger |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.50%
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000
Senior Notes | Senior Notes due 2026, 7.50% | HighPoint Merger | Debt Instrument, Redemption, Period Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LONG-TERM DEBT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |

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