Debt and Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Mar. 27, 2024	Mar. 31, 2024	Mar. 31, 2023
Debt Instrument [Line Items]
Interest costs		$ 175	$ 207
Tax Matters In Peru, Contingent Liability			$ 25
Remaining authorized shares repurchase amount		$ 3,200
Dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.15	$ 0.15
Base cash dividend (in dollars per share)	0.075
Variable cash dividend (in dollars per share)	$ 0.075
Unsecured Credit Facility | PT-FI
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 1,750
Unsecured Credit Facility | Cerro Verde
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		350
Letter of credit		0
Revolving Credit Facility | PT-FI
Debt Instrument [Line Items]
Letter of credit		0
Property, Plant and Equipment
Debt Instrument [Line Items]
Interest costs capitalized		86	$ 56
Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, availability		1,500
Letter of credit		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
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