Business Segments (Product Revenue) (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)
Revenue from External Customer [Line Items]
Treatment And Refining Charges Included In Copper Concentrates Revenues	$ (139)	$ (101)	$ (272)	$ (198)
Royalty Expense	(111)	(82)	(206)	(145)
Export duties expense	84	44	182	73
Revenue from Contract with Customer, Excluding Assessed Tax	6,169	5,615	12,532	10,286
Revenues	5,416	5,748	$ 12,019	10,598
Number of Operating Segments | segment			4
Indonesia | Disputes
Revenue from External Customer [Line Items]
Export duties expense			$ 18
Sales | Not Designated as Hedging Instrument
Revenue from External Customer [Line Items]
Matured derivative financial instruments	(753)	133	(513)	312
Copper In Concentrates
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,694	2,076	5,385	3,785
Copper Cathode
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,183	1,535	2,618	2,769
Refined Copper Products
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,071	833	2,187	1,517
Purchased Copper
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	104	310	174	528
Gold
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	909	597	1,720	1,115
Molybdenum
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	377	288	755	532
Other Products Or Services
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 165	$ 203	$ 353	$ 456