Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
REVENUES
Oil, natural gas and natural gas liquids sales	$ 715	$ 870	$ 2,231	$ 1,711
Net (loss) gain from commodity derivatives	(23)	356	140	290
Total operating revenues	855	1,353	2,745	2,321
OPERATING EXPENSES
Operating costs	316	311	927	643
General and administrative expenses	87	106	238	226
Depreciation, depletion and amortization	123	140	382	246
Asset impairment	2	0	2	13
Taxes other than on income	70	85	187	162
Accretion expense	28	31	85	56
Net loss on natural gas purchase derivatives	27	9	24	11
Measurement period adjustments, net	0	0	1	0
Other operating expenses, net	29	78	127	188
Total operating expenses	756	835	2,193	1,776
(Loss) gain on asset divestitures	(1)	0	(1)	7
OPERATING INCOME	98	518	551	552
NON-OPERATING (EXPENSES) INCOME
Interest and debt expense, net	(25)	(29)	(77)	(59)
Loss on early extinguishment of debt	0	(5)	(1)	(5)
Loss from investment in unconsolidated subsidiaries	(2)	(2)	(3)	(9)
Other non-operating income (expense), net	4	1	9	(4)
INCOME BEFORE INCOME TAXES	75	483	479	475
Income tax provision	(11)	(138)	(128)	(132)
NET INCOME	$ 64	$ 345	$ 351	$ 343
Net income per share
Basic (in dollars per share)	$ 0.76	$ 3.86	$ 4.00	$ 4.54
Diluted (in dollars per share)	$ 0.76	$ 3.78	$ 3.97	$ 4.42
Weighted-average common shares outstanding
Basic (in shares)	83.7	89.4	87.8	75.5
Diluted (in shares)	84.4	91.2	88.4	77.6
Revenue from marketing of purchased commodities
REVENUES
Other revenue	$ 58	$ 51	$ 178	$ 176
OPERATING EXPENSES
Costs of sales	44	43	135	140
Electricity revenue
REVENUES
Other revenue	101	69	181	120
Other revenue
REVENUES
Other revenue	4	7	15	24
Electricity generation expenses
OPERATING EXPENSES
Costs of sales	11	9	26	31
Transportation costs
OPERATING EXPENSES
Costs of sales	$ 19	$ 23	$ 59	$ 60