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Inventories, Including Long-Term Mill and Leach Stockpiles - Schedule of Inventory (Details) oz in Thousands, lb in Millions, $ in Millions | Jun. 30, 2023 USD ($) oz lb | Dec. 31, 2022 USD ($)
--- | --- | ---
Current inventories: |  |
Total materials and supplies, net | $ 2,098 | $ 1,964
Mill stockpiles | 224 | 216
Leach stockpiles | 1,274 | 1,167
Total current mill and leach stockpiles | 1,498 | 1,383
Raw materials (primarily copper concentrate) | 382 | 443
Work-in-process | 189 | 221
Finished goodsb | 1,643 | 1,169
Total product | 2,214 | 1,833
Long-term inventories: |  |
Mill stockpiles | 216 | 199
Leach stockpiles | 1,025 | 1,053
Total long-term mill and leach stockpiles | 1,241 | 1,252
Inventory obsolescence reserves | $ 33 | $ 39
Copper deferred in inventory for future sale | lb | 85 |
Gold deferred in inventory for future sale | oz | 40 |
PT Freeport Indonesia |  |
Long-term inventories: |  |
Ownership interest in copper smelter and refinery | 39.50% |

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