Business Segments (Product Revenue) (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2023 USD ($)
Revenue from External Customer [Line Items]
Number of Operating Segments | segment				4
Royalty expense		$ (93)	$ (94)	$ (213)	$ (154)
Treatment charges		(90)	(142)	(219)	(243)
PT-FI export dutiesc		(75)	3	(231)	(14)
Revenues from contracts with customers		6,398	5,927	12,609	11,043
Revenues		$ 6,624	$ 5,737	12,945	$ 11,126
Export Duty On Copper Concentrates, Paid, Percent			2.50%
Construction progress			50.00%		50.00%
Export Duty On Copper Concentrates, Percent	7.50%	7.50%
Sales | Not Designated as Hedging Instrument
Revenue from External Customer [Line Items]
Matured derivative financial instruments		$ 226	$ (190)	336	$ 83
Copper Cathode
Revenue from External Customer [Line Items]
Revenue		2,237	1,670	4,178	3,181
Copper In Concentrates
Revenue from External Customer [Line Items]
Revenue		1,595	1,873	3,413	3,276
Refined Copper Products
Revenue from External Customer [Line Items]
Revenue		974	884	1,927	1,805
Purchased Copper
Revenue from External Customer [Line Items]
Revenue		300	72	466	276
Gold
Revenue from External Customer [Line Items]
Revenue		935	999	2,103	1,530
Molybdenum
Revenue from External Customer [Line Items]
Revenue		476	491	897	1,083
Silver And Other
Revenue from External Customer [Line Items]
Revenue		$ 139	$ 171	$ 288	$ 303