Debt and Equity - Components of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt	$ 9,405	$ 10,620
Less current portion of debt	(35)	(1,037)
Long-term debt, less current portion	9,370	9,583
Senior Notes \| FCX
Debt Instrument [Line Items]
Long-term debt	6,004	7,225
Senior Notes \| PT-FI
Debt Instrument [Line Items]
Long-term debt	2,980	2,978
Debentures \| Freeport McMoRan Corporation
Debt Instrument [Line Items]
Long-term debt	354	355
Other Debt, Including Capital Leases and Short Term Borrowings [Member]
Debt Instrument [Line Items]
Long-term debt	$ 67	$ 62

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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

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