v3.26.1
Contingencies and Commitments - Indonesia Matters (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jan. 01, 2042
Loss Contingencies [Line Items]            
Gain on PTFI mud rush incident insurance settlement   $ 0 $ 0 $ 699 $ 0  
PT Freeport Indonesia            
Loss Contingencies [Line Items]            
Gross Export Proceeds   30.00%   30.00%    
Income Tax Examination, Penalties Expense $ 220          
PT Freeport Indonesia            
Loss Contingencies [Line Items]            
Noncontrolling interest, ownership percentage by parent   48.76%   48.76%    
PT Freeport Indonesia | Forecast            
Loss Contingencies [Line Items]            
Noncontrolling interest, ownership percentage by parent           37.00%
Mud Rush            
Loss Contingencies [Line Items]            
Recovery costs   $ (284)   $ (690)    
Cost Associated With Idle Facilities, Depreciation, Amortization and Depletion   $ (79)   $ (172)    
Mud Rush | PT Freeport Indonesia            
Loss Contingencies [Line Items]            
Gain on PTFI mud rush incident insurance settlement $ 700