Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenues	$ 5,003	$ 6,083	$ 17,022	$ 16,681
Cost of sales:
Production and delivery	3,366	3,009	9,519	8,862
Depreciation, depletion and amortization	508	528	1,504	1,430
Metals inventory adjustments	25	14	43	15
Total cost of sales	3,899	3,551	11,066	10,307
Selling, general and administrative expenses	98	102	313	289
Mining exploration and research expenses	38	15	87	36
Environmental obligations and shutdown costs	6	13	51	51
Net gain on sales of assets	0	(60)	(2)	(63)
Total costs and expenses	4,041	3,621	11,515	10,620
Operating income	962	2,462	5,507	6,061
Interest expense, net	(140)	(138)	(423)	(431)
Gain	20	0	28	0
Other income, net	25	36	67	56
Income before income taxes and equity in affiliated companies’ net earnings (losses)	867	2,360	5,179	5,686
Provision for income taxes	(315)	(628)	(1,710)	(1,674)
Equity in affiliated companies’ net earnings (losses)	8	(9)	33	(5)
Net income	560	1,723	3,502	4,007
Net income (loss) attributable to noncontrolling interests	156	324	731	807
Net income attributable to common stockholders	$ 404	$ 1,399	$ 2,771	$ 3,200
Earnings Per Share, Basic and Diluted [Abstract]
Earnings per share, basic (in dollars per share)	$ 0.28	$ 0.95	$ 1.91	$ 2.18
Earnings per share, diluted (in dollars per share)	$ 0.28	$ 0.94	$ 1.90	$ 2.16
Basic weighted-average shares of common stock outstanding	1,431	1,469	1,444	1,466
Diluted weighted-average shares of common shares outstanding	1,439	1,484	1,455	1,481
Dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.075	$ 0.45	$ 0.225