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OWNERSHIP IN SUBSIDIARIES AND JOINT VENTURES - PT-FI Divestment (Details)
$ in Millions
12 Months Ended 48 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
oz
Dec. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Dec. 21, 2018
Summary of investment holdings [Line Items]          
Net income $ 4,399 $ 3,751 $ 4,479    
PT Freeport Indonesia          
Summary of investment holdings [Line Items]          
Net income       $ 6,000  
PT Freeport Indonesia          
Summary of investment holdings [Line Items]          
Ownership percentage 48.76%        
Net income (loss) attributable to parent       $ 4,900  
PT Freeport Indonesia          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary     81.00% 81.00% 48.76%
PT Freeport Indonesia | Beyond 2023          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary   48.76%      
Freeport McMoRan Corporation          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary         48.76%
PT Indonesia Asahan Aluminium (Persero) (Inalum)          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary         26.24%
PT Indonesia Papua Metal dan Mineral          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary         25.00%
PT Freeport Indonesia          
Summary of investment holdings [Line Items]          
Sale of gold | oz   190,000      
PT Freeport Indonesia | PT Freeport Indonesia          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary 48.76%        
PT Freeport Indonesia | Freeport McMoRan Corporation          
Summary of investment holdings [Line Items]          
Portion of gold sales attributable to noncontrolling interest 81.00%        
PT Freeport Indonesia | PT Indonesia Asahan Aluminium (Persero) (Inalum)          
Summary of investment holdings [Line Items]          
Ownership percentage of subsidiary   19.00%      
Interest In PT Indocopper Investama | PT Indonesia Asahan Aluminium (Persero) (Inalum)          
Summary of investment holdings [Line Items]          
Percentage of voting interest         100.00%
PT Freeport Indonesia | PT Indonesia Asahan Aluminium (Persero) (Inalum)          
Summary of investment holdings [Line Items]          
Ownership interest by parent subsequent to business acquisition         26.24%
PT Freeport Indonesia | PT Indonesia Papua Metal dan Mineral          
Summary of investment holdings [Line Items]          
Ownership interest by parent subsequent to business acquisition         25.00%
PT Freeport Indonesia | PT Freeport Indonesia          
Summary of investment holdings [Line Items]          
Ownership interest by parent subsequent to business acquisition         51.24%