Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenues	$ 5,737	$ 5,416	$ 11,126	$ 12,019
Cost of sales:
Production and delivery	3,548	3,003	6,712	6,153
Depreciation, depletion and amortization (DD&A)	547	507	946	996
Metals inventory adjustments	1	18	2	18
Total cost of sales	4,096	3,528	7,660	7,167
Selling, general and administrative expenses	115	100	241	215
Mining exploration and research expenses	42	25	73	49
Environmental obligations and shutdown costs	74	29	141	45
Net gain on sales of assets	0	(2)	0	(2)
Total costs and expenses	4,327	3,680	8,115	7,474
Operating income	1,410	1,736	3,011	4,545
Interest expense, net	(171)	(156)	(322)	(283)
Net gain on early extinguishment of debt	5	8	5	8
Other income, net	24	11	112	42
Income before income taxes and equity in affiliated companies’ net earnings	1,268	1,599	2,806	4,312
Provision for income taxes	(539)	(571)	(1,038)	(1,395)
Equity in affiliated companies’ net earnings	2	10	12	25
Net income	731	1,038	1,780	2,942
Net income (loss) attributable to noncontrolling interests	388	198	774	575
Net income attributable to common stockholders	$ 343	$ 840	$ 1,006	$ 2,367
Net income per share attributable to common stockholders:
Earnings per share, basic (in dollars per share)	$ 0.24	$ 0.58	$ 0.70	$ 1.63
Earnings per share, diluted (in dollars per share)	$ 0.23	$ 0.57	$ 0.69	$ 1.61
Weighted-average shares of common stock outstanding:
Basic weighted-average shares of common stock outstanding	1,434	1,447	1,434	1,451
Diluted weighted-average shares of common shares outstanding	1,442	1,457	1,443	1,463
Dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.15	$ 0.30	$ 0.30