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OWNERSHIP IN SUBSIDIARIES AND JOINT VENTURES - Joint Venture (Details) lb in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) lb | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Apr. 30, 2021 | Apr. 29, 2021
Summary of investment holdings [Line Items] |  |  |  |  |
Equity in affiliated companies’ net earnings | $ 31 | $ 5 | $ 12 |  |
Sumitomo Metal Mining Co., Ltd. |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Due from joint ventures |  | 20 |  |  |
Freeport-McMoRan Corporation |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Number of pounds of copper purchased from Sumitomo (in pounds) | lb | 62 |  |  |  |
Sumitomo Metal Mining, Ltd. and SMM Morenci Inc. |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Dollar value of pounds purchased from Sumitomo | $ 245 |  |  |  |
Due from joint ventures | 25 |  |  |  |
PT Freeport Indonesia | PT Smelting |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Equity in affiliated companies’ net earnings | $ 24 | 6 | $ 11 |  |
Morenci |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Ownership percentage | 72.00% |  |  |  |
Ownership percentage | 28.00% |  |  |  |
Morenci | Sumitomo Metal Mining Co., Ltd. |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Ownership percentage | 15.00% |  |  |  |
Morenci | SMM Morenci Inc. |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Ownership percentage | 13.00% |  |  |  |
PT Smelting |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Ownership percentage |  |  |  | 39.50% | 25.00%
Equity in affiliated companies’ net earnings | $ 112 | $ 126 |  |  |
PT Smelting | PT Freeport Indonesia |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Ownership percentage | 39.50% |  |  |  |
PT Smelting | Mitsubishi Materials Corporation |  |  |  |  |
Summary of investment holdings [Line Items] |  |  |  |  |
Ownership percentage | 60.50% |  |  |  |

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