Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues	$ 5,416	$ 5,748	$ 12,019	$ 10,598
Cost of sales:
Production and delivery	3,003	3,067	6,153	5,853
Depreciation, depletion and amortization	507	483	996	902
Metals inventory adjustments	18	0	18	1
Total cost of sales	3,528	3,550	7,167	6,756
Selling, general and administrative expenses	100	87	215	187
Mining exploration and research expenses	25	14	49	21
Environmental obligations and shutdown costs	29	33	45	38
Net gain on sales of assets	(2)	(3)	(2)	(3)
Total costs and expenses	3,680	3,681	7,474	6,999
Operating income	1,736	2,067	4,545	3,599
Interest expense, net	(156)	(148)	(283)	(293)
Gain/(Loss)	8	0	8	0
Other income, net	11	9	42	20
Income before income taxes and equity in affiliated companies’ net earnings	1,599	1,928	4,312	3,326
Provision for income taxes	(571)	(603)	(1,395)	(1,046)
Equity in affiliated companies’ net earnings	10	6	25	4
Net income	1,038	1,331	2,942	2,284
Net income (loss) attributable to noncontrolling interests	198	248	575	483
Net income attributable to common stockholders	$ 840	$ 1,083	$ 2,367	$ 1,801
Earnings Per Share, Basic and Diluted [Abstract]
Earnings per share, basic (in dollars per share)	$ 0.58	$ 0.74	$ 1.63	$ 1.23
Earnings per share, diluted (in dollars per share)	$ 0.57	$ 0.73	$ 1.61	$ 1.21
Basic weighted-average shares of common stock outstanding	1,447	1,467	1,451	1,465
Diluted weighted-average shares of common shares outstanding	1,457	1,483	1,463	1,480
Dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.075	$ 0.30	$ 0.15