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OWNERSHIP IN SUBSIDIARIES AND JOINT VENTURES - Ownership in Subsidiaries (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 21, 2018
--- | --- | --- | ---
Summary of investment holdings [Line Items] |  |  |
Retained Earnings (Accumulated Deficit) | $ 3,907,000,000 | $ 7,375,000,000 |
PT Freeport Indonesia |  |  |
Summary of investment holdings [Line Items] |  |  |
Net assets (liabilities) in subsidiary | 13,000,000,000 |  |
Retained Earnings (Accumulated Deficit) | $ (8,400,000,000) |  |
Morenci |  |  |
Summary of investment holdings [Line Items] |  |  |
Ownership percentage | 72.00% |  |
Other North America [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Ownership percentage | 100.00% |  |
Cerro Verde [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Ownership percentage | 53.56% |  |
El Abra [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Ownership percentage | 51.00% |  |
Freeport Minerals Corporation [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Loans outstanding | $ 1,000,000 |  |
Freeport Minerals Corporation [Member] | Subsidiaries [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Net assets (liabilities) in subsidiary | 19,000,000,000 |  |
Retained Earnings (Accumulated Deficit) | $ 12,200,000,000 |  |
PT Freeport Indonesia |  |  |
Summary of investment holdings [Line Items] |  |  |
Ownership percentage | 48.76% |  | 81.00%
Loans outstanding | $ 0 |  |
Atlantic Copper [Member] |  |  |
Summary of investment holdings [Line Items] |  |  |
Ownership percentage | 100.00% |  |
Net assets (liabilities) in subsidiary | $ 104,000,000 |  |
Retained Earnings (Accumulated Deficit) | 440,000,000 |  |
Loans outstanding | $ 456,000,000 |  |

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