Business Segments (Product Revenue) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)
Revenue from External Customer [Line Items]
Treatment And Refining Charges Included In Copper Concentrates Revenues	$ (133)	$ (97)
Royalty Expense	(95)	(63)
Export duties expense	98	29
Revenue from Contract with Customer, Excluding Assessed Tax	6,363	4,671
Revenues	$ 6,603	4,850
Number of Operating Segments | segment	4
Indonesia | Disputes
Revenue from External Customer [Line Items]
Export duties expense	$ 18
Sales [Member] | Not Designated as Hedging Instrument [Member]
Revenue from External Customer [Line Items]
Matured derivative financial instruments	240	179
Copper In Concentrates [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,691	1,709
Copper Cathode [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,435	1,234
Refined Copper Products [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,116	684
Purchased Copper [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	70	218
Gold
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	811	518
Molybdenum
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	378	244
Other Products Or Services [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 188	$ 253