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Future Net Revenues, Coverage Ratio

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Line of Credit Facility, Accordion Feature, Increase Limit

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Represents the minimum current ratio covenant as defined by the revolving credit facility.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Percentage of principal amount of debt redeemed.

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Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Millions				3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 03, 2025	Jan. 03, 2025	Jan. 02, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	May 28, 2025	Mar. 31, 2025	Feb. 21, 2025	Aug. 02, 2023
LONG-TERM DEBT
Interest expense				$ 120	$ 117	$ 341	$ 342
Proceeds from issuance of senior notes						$ 743	0
Revolving Credit Facility
LONG-TERM DEBT
Minimum current ratio covenant						1.00
Coverage ratio						1.50
Vencer Acquisition
LONG-TERM DEBT
Cash consideration to be paid January 3, 2025			$ 550
Deferred acquisition consideration			$ 532
Interest expense					$ 9		$ 27
Business Combination, Cash Consideration Paid		$ 475						$ 75
Amended Credit Agreement \| Revolving Credit Facility
LONG-TERM DEBT
Maximum borrowing capacity												$ 4,000
Borrowing base amount				3,300		$ 3,300			$ 3,300	$ 3,400
Aggregate elected commitments				$ 2,500		$ 2,500		2,200	$ 2,500		$ 2,500
Covenant, minimum percentage of mortgage on total value of certain proved oil and gas properties				90.00%		90.00%
Maximum net leverage ratio				3.00		3.00
Deferred financing costs, gross				$ 25		$ 25		29
Deferred financing costs, net				16		16		21
Unamortized deferred financing costs				$ 9		$ 9		$ 8
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						1.75%
Amended Credit Agreement \| Revolving Credit Facility \| SOFR \| Maximum
LONG-TERM DEBT
Basis spread on variable rate						2.75%
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						0.75%
Amended Credit Agreement \| Revolving Credit Facility \| SOFR, Plus Basis Spread One \| Maximum
LONG-TERM DEBT
Basis spread on variable rate						1.75%
Senior Notes Due 2033, 9.625% \| Senior Notes
LONG-TERM DEBT
Proceeds from issuance of senior notes	$ 743
Debt Issuance Costs, Gross	$ 7
Senior Notes Due 2033, 9.625% \| Senior Notes \| Debt Instrument, Redemption, Period One
LONG-TERM DEBT
Debt Instrument, Redemption Price, Percentage	104.813%
Senior Notes Due 2033, 9.625% \| Senior Notes \| Debt Instrument, Redemption, Period Two
LONG-TERM DEBT
Debt Instrument, Redemption Price, Percentage	102.406%
Senior Notes Due 2033, 9.625% \| Senior Notes \| Debt Instrument, Redemption, Period Three
LONG-TERM DEBT
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes Due 2033, 9.625% \| Senior Notes \| Debt Instrument, Redemption, Period Four
LONG-TERM DEBT
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	35.00%
Senior Notes Due 2033, 9.625% \| Senior Notes \| Debt Instrument, Redemption, Period Five
LONG-TERM DEBT
Debt Instrument, Redemption Price, Percentage	109.625%
Senior Notes Due 2033, 9.625% \| Senior Notes \| Debt Instrument, Redemption, Period Six
LONG-TERM DEBT
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	65.00%