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INCOME AND MINING TAXES - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Income Tax Disclosure [Abstract] |  |  |  |
Effective income tax rate reconciliation, rate (as a percent) |  | (8.80%) | 7.10% |
Deferred income tax expense |  | $ 68,900,000 |  |
Effective income tax rate reconciliation, statutory rate (as a percent) |  | 27.00% |  |
Unrecognized tax benefits that would impact effective tax rate | $ 0 | $ 0 |  | $ 8,600,000
Unrecognized tax benefits, income tax penalties and interest accrued | 0 | 0 |  | $ 5,200,000
Unrecognized tax benefits, release of income tax penalties and interest expense |  | (7,200,000) |  |
Unrecognized tax benefits, cash settlement | $ 1,400,000 | $ 1,356,000 | $ 0 |

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