Business Segments (Product Revenue) (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)
Revenue from External Customer [Line Items]
Treatment chargesc	$ (142)	$ (139)	$ (243)	$ (272)
Royalty expense	(94)	(111)	(154)	(206)
PT-FI export dutiese	4	(84)	(14)	(182)
Revenues from contracts with customers	5,927	6,169	11,043	12,532
Revenues	5,737	5,416	$ 11,126	12,019
Number of Operating Segments \| segment			4
Indonesia \| Disputes
Revenue from External Customer [Line Items]
PT-FI export dutiese				(18)
Sales \| Not Designated as Hedging Instrument
Revenue from External Customer [Line Items]
Matured derivative financial instruments	(190)	(753)	$ 83	(513)
Copper In Concentrates
Revenue from External Customer [Line Items]
Revenue	2,185	2,694	3,772	5,385
Copper Cathode
Revenue from External Customer [Line Items]
Revenue	1,358	1,183	2,685	2,618
Refined Copper Products
Revenue from External Customer [Line Items]
Revenue	884	1,071	1,805	2,187
Purchased Copper
Revenue from External Customer [Line Items]
Revenue	72	104	276	174
Gold
Revenue from External Customer [Line Items]
Revenue	999	909	1,530	1,720
Molybdenum
Revenue from External Customer [Line Items]
Revenue	491	377	1,083	755
Other Products Or Services
Revenue from External Customer [Line Items]
Revenue	$ 170	$ 165	$ 303	$ 353

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