Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
CASH FLOW FROM OPERATING ACTIVITIES
Net income	$ 64	$ 345	$ 351	$ 343
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	123	140	382	246
Asset impairments	2	0	2	13
Deferred income tax provision	35	90	76	84
Net loss (gain) from commodity derivatives	50	(347)	(116)	(279)
Net proceeds (payments) on settled commodity derivatives	6	(29)	(12)	(53)
Net loss on early extinguishment of debt	0	5	1	5
Gain on asset divestitures	1	0	1	(7)
Other non-cash charges to income, net	41	45	110	97
Net changes in operating assets and liabilities	(43)	(29)	(165)	(45)
Net cash provided by operating activities	279	220	630	404
CASH FLOW FROM INVESTING ACTIVITIES
Capital investments	(91)	(79)	(202)	(167)
Changes in accrued capital investments	5	6	(10)	8
Proceeds from asset divestitures	1	0	2	12
Purchase of a business, net of cash acquired	0	(853)		(853)
Acquisitions	0	0	0	(6)
Other, net	(2)	(2)	(7)	(4)
Net cash used in investing activities	(87)	(928)	(217)	(1,010)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from Revolving Credit Facility	150	0	150	30
Repayments of Revolving Credit Facility	(150)	(30)	(150)	(30)
Proceeds from 2029 Senior Notes, net	0	298	0	888
Repurchases of common stock	(34)	(42)	(352)	(135)
Common stock dividends	(32)	(34)	(102)	(77)
Dividend equivalents on equity-settled awards	0	0	(1)	(4)
Issuance of common stock	0	0	2	2
Bridge loan commitments	0	0	0	(5)
Stock warrants exercised	0	37	0	37
Debt amendment costs	0	(7)	0	(10)
Shares cancelled for taxes	(1)	0	(12)	(42)
Debt issuance costs	(1)	0	(1)	0
Debt redemption	0	(303)	(123)	(303)
Other	0	(1)	0	0
Net cash (used in) provided by financing activities	(68)	(82)	(589)	351
Increase (decrease) in cash and cash equivalents	124	(790)	(176)	(255)
Cash and cash equivalents—beginning of period	72	1,031	372	496
Cash and cash equivalents—end of period	$ 196	$ 241	$ 196	$ 241