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Contingencies and Commitments - Indonesia Regulatory Matters (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2025 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) | Sep. 08, 2025 fatality metricTon | Mar. 17, 2025 metricTon
Loss Contingencies [Line Items] |  |  |  |  |
Number of fatalities | fatality |  |  |  | 7 |
Weight of wet material | metricTon |  |  |  | 800,000 |
Export License, Volume | metricTon |  |  |  |  | 1,400,000
Export duty to be paid, percent |  |  | 7.50% |  |
Export Proceeds, Percent |  | 100.00% |  |  |
Administrative fine | $ 59,000,000 |  |  |  |
Operating Segments | Indonesia | Grasberg Segment | Mud Rush |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Recovery costs |  | $ 43,000,000 | $ 43,000,000 |  |
PT Freeport Indonesia |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Incident charges |  | 195,000,000 |  |  |
Idle facility costs |  | 152,000,000 |  |  |
Recovery costs |  | 43,000,000 |  |  |
Asset Impairment Charges |  | 0 |  |  |
Maximum loss limit |  | 1,000,000,000 |  |  |
Maximum loss limit on underground incidents |  | 700,000,000 |  |  |
Deductible amount |  | $ 500,000,000 |  |  |

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