v3.26.1
Contingencies and Commitments - Indonesia Matters (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Jan. 01, 2042
Loss Contingencies [Line Items]      
Capacity percentage 60.00%    
PTFI mud rush incident insurance settlement $ 699 $ 0  
PT Freeport Indonesia      
Loss Contingencies [Line Items]      
PTFI mud rush incident insurance settlement $ 700    
PT Freeport Indonesia      
Loss Contingencies [Line Items]      
Noncontrolling interest, ownership percentage by parent 48.76%    
PT Freeport Indonesia | Forecast      
Loss Contingencies [Line Items]      
Noncontrolling interest, ownership percentage by parent     37.00%
Mud Rush      
Loss Contingencies [Line Items]      
Production and delivery $ 499    
Recovery costs (406)    
Cost Associated With Idle Facilities, Depreciation, Amortization and Depletion $ (93)