Debt and Equity - Components of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term debt	$ 10,690	$ 9,450
Less current portion of debt	(1,032)	(372)
Long-term debt, less current portion	9,658	9,078
Senior Notes \| FCX
Debt Instrument [Line Items]
Long-term debt	7,301	8,268
Senior Notes \| PT-FI
Debt Instrument [Line Items]
Long-term debt	2,976	0
Debentures \| Freeport McMoRan Corporation
Debt Instrument [Line Items]
Long-term debt	355	355
Line of Credit \| PT-FI Term Loan
Debt Instrument [Line Items]
Long-term debt	0	432
Line of Credit \| Cerro Verde
Debt Instrument [Line Items]
Long-term debt	0	325
Other Debt, Including Capital Leases and Short Term Borrowings [Member]
Debt Instrument [Line Items]
Long-term debt	$ 58	$ 70

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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