DEBT - Schedule of Senior Notes (Details)	Dec. 31, 2023
Senior Notes | 6.5% Senior Notes due 2020
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Senior Notes | 6.625% Senior Notes due 2021
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Senior Notes | 6.75% Senior Notes due 2022
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.75%
Senior Notes | 6.875% Senior Notes due 2023
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.875%
Senior Notes | 3.875% Senior Notes due March 2023
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.875%
Senior Notes | 6.125% Senior Notes due 2019
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.125%
Senior Notes | senior notes 4.55
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.55%
Senior Notes | Senior Notes due 2027, 5%
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Senior Notes | Senior Notes Due 2028, 4.125%
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.125%
Senior Notes | Senior Notes Due 2028, 4.375%
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.375%
Senior Notes | Senior Notes due 2029, 5.25%
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Senior Notes | Senior Notes Due 2030, 4.25%
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Senior Notes | Senior Notes Due 2030, 4.625%
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Senior Notes | Senior Notes due 2034 5 point 4 percent
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.40%
Senior Notes | 5.450% Senior Notes due March 2043
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.45%
Senior Notes | 4.763% Senior Notes Due 2027 | Freeport-McMoRan Oil & Gas
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.763%
Senior Notes | 5.315% Senior Notes Due 2032 | Freeport-McMoRan Oil & Gas
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.315%
Senior Notes | 6.200% Senior Notes Due 2052 | Freeport-McMoRan Oil & Gas
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.20%
Senior Notes | Senior Notes Due 2031 | Freeport McMoRan Corporation
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	9.50%
Senior Notes | Senior Notes Due 2034 | Freeport McMoRan Corporation
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.125%
Debentures | Debentures Due 2027 | Freeport McMoRan Corporation
Debt Instruments [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.125%