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%