Debt and Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended		32 Months Ended
	Jun. 26, 2024	Jul. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jul. 31, 2024	Aug. 01, 2024
Debt Instrument [Line Items]
Interest costs			$ 181	$ 234	$ 356	$ 441
Tax Matters In Peru, Contingent Liability				$ 50		$ 74
Stock repurchase program, authorized amount			$ 5,000		$ 5,000
Dividends declared per share of common stock (in dollars per share)	$ 0.15		$ 0.15	$ 0.15	$ 0.30	$ 0.30
Base cash dividend (in dollars per share)	0.075
Variable cash dividend (in dollars per share)	$ 0.075
Subsequent event
Debt Instrument [Line Items]
Treasury stock purchases (in shares)		1.2					49.0
Shares repurchased		$ 59					$ 1,900
Cost per share repurchased (in dollars per share)		$ 50.48					$ 38.64
Unsecured Credit Facility | PT-FI
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 1,750		$ 1,750
Unsecured Credit Facility | Cerro Verde
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			350		350
Line of credit			0		0
Revolving Credit Facility | PT-FI
Debt Instrument [Line Items]
Line of credit			0		0
Revolving Credit Facility | PT-FI | Subsequent event
Debt Instrument [Line Items]
Line of credit								$ 250
Property, Plant and Equipment
Debt Instrument [Line Items]
Interest costs capitalized			93	$ 62	179	$ 119
Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, availability			1,500		1,500
Line of credit			7		7
Line of Credit | Revolving Credit Facility | October 2022 Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			3,000		3,000
Line of Credit | Revolving Credit Facility | PT-FI | October 2022 Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 500		$ 500