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INVENTORIES, INCLUDING LONG-TERM MILL AND LEACH STOCKPILES (Components of Inventories) (Details) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) lb | Dec. 31, 2021 USD ($) $ / shares lb | Dec. 31, 2020 USD ($)
Components of Inventories [Line Items] |  |  |
Total materials and supplies, net | $ 1,964 | $ 1,669 |
Mill stockpiles | 216 | 193 |
Inventory, Ore Stockpiles on Leach Pads, Gross | 1,167 | 977 |
Total current mill and leach stockpiles | 1,383 | 1,170 |
Raw materials (primarily concentrate) | 443 | 536 |
Work-in-process | 221 | 195 |
Finished goods | 1,169 | 927 |
Total product | 1,833 | 1,658 |
Mill stockpiles | 199 | 226 |
Leach stockpiles | 1,053 | 1,161 |
Total long-term inventories | 1,252 | 1,387 |
Inventory obsolescence reserves | 39 | 36 |
Metals inventory adjustments | 29 | $ 16 | $ 96
Inventory adjustment, stockpile write-off | $ 10 |  |
Increase in recoverable copper in leach stockpiles | lb | (213,000,000) |  |
El Abra |  |  |
Components of Inventories [Line Items] |  |  |
Increase (Decrease) in recoverable copper in Leach Stockpiles | lb | (135,000,000) |  |
Morenci |  |  |
Components of Inventories [Line Items] |  |  |
Increase in recoverable copper in leach stockpiles | lb |  | (191,000,000) |
Increase in net income as a result of recoverable inventory |  | $ 112 |
Increase in earnings per share as a result of increased recoverable inventory | $ / shares |  | $ 0.08 |
Copper |  |  |
Components of Inventories [Line Items] |  |  |
Metals inventory adjustments | $ 19 |  |

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