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
Income Statement [Abstract]
Revenues	$ 6,972	$ 6,790	$ 20,282	$ 19,735
Cost of sales:
Production and delivery	4,205	4,077	12,243	11,796
Depreciation, depletion and amortization	625	600	1,759	1,704
Total cost of sales	4,830	4,677	14,002	13,500
Selling, general and administrative expenses	131	117	412	384
Exploration and research expenses	55	38	140	115
Environmental obligations and shutdown costs	0	20	37	115
Gain on sales of assets	(16)	0	(16)	0
Total costs and expenses	5,000	4,852	14,575	14,114
Operating income	1,972	1,938	5,707	5,621
Interest expense, net	(107)	(72)	(259)	(249)
Other income, net	59	97	158	295
Income before income taxes and equity in affiliated companies’ net (losses) earnings	1,924	1,963	5,606	5,667
Provision for income taxes	(669)	(737)	(2,019)	(2,003)
Equity in affiliated companies’ net (losses) earnings	(8)	10	0	14
Net income	1,247	1,236	3,587	3,678
Net income (loss) attributable to noncontrolling interests	573	710	1,789	2,063
Net income attributable to common stockholders	$ 674	$ 526	$ 1,798	$ 1,615
Net income per share attributable to common stockholders:
Earnings per share, basic (in dollars per share)	$ 0.46	$ 0.36	$ 1.25	$ 1.12
Earnings per share, diluted (in dollars per share)	$ 0.46	$ 0.36	$ 1.24	$ 1.11
Weighted-average shares of common stock outstanding:
Basic weighted-average shares of common stock outstanding	1,437	1,438	1,437	1,438
Diluted weighted-average shares of common shares outstanding	1,443	1,444	1,443	1,445
Dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.15	$ 0.45	$ 0.45