Business Segments (Product Revenue) (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)
Revenue from External Customer [Line Items]
Treatment charges	$ (132)	$ (126)	$ (404)	$ (324)
Royalty expense	(83)	(97)	(289)	(242)
PT-FI export duties	(81)	(72)	(263)	(145)
Revenues from contracts with customers	5,309	6,194	17,841	16,480
Revenues	5,003	6,083	$ 17,022	16,681
Number of Operating Segments \| segment			4
Indonesia \| Disputes
Revenue from External Customer [Line Items]
PT-FI export duties			$ (18)
Sales \| Not Designated as Hedging Instrument
Revenue from External Customer [Line Items]
Matured derivative financial instruments	(306)	(111)	(819)	201
Copper In Concentrates
Revenue from External Customer [Line Items]
Revenue	2,091	2,531	7,476	6,316
Copper Cathode
Revenue from External Customer [Line Items]
Revenue	1,255	1,463	3,873	4,232
Refined Copper Products
Revenue from External Customer [Line Items]
Revenue	755	1,048	2,942	2,565
Purchased Copper
Revenue from External Customer [Line Items]
Revenue	168	124	342	652
Gold
Revenue from External Customer [Line Items]
Revenue	858	741	2,578	1,856
Molybdenum
Revenue from External Customer [Line Items]
Revenue	304	372	1,059	904
Other Products Or Services
Revenue from External Customer [Line Items]
Revenue	$ 174	$ 210	$ 527	$ 666

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