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ÇÖPLER INCIDENT - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |  |  |
Expenditures |  |  | $ 129,627 | $ 1,466 |
Reclamation and remediation liability |  |  | 345,837 | 173,819 | $ 164,047
Impairment charges of long-lived and other assets |  |  | 114,599 | 361,612 | 0
Reclamation |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Expenditures |  |  | 3,867 | 1,466 |
Reclamation and remediation liability |  |  | 209,923 | 173,819 | 164,047
Remediation |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Expenditures |  |  | 125,760 | 0 |
Reclamation and remediation liability |  |  | 135,914 | 0 | $ 0
Çöpler Incident |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Direct costs |  |  | 61,600 |  |
Depreciation |  |  | 47,100 |  |
Incurred costs |  | $ 22,500 | 272,903 |  |
Expenditures |  |  | 127,645 |  |
Reclamation and remediation liability |  |  | 145,258 | 0 |
Impairment charges of long-lived and other assets |  | 114,200 |  |  |
Contingencies related to the Çöpler incident |  |  | 7,500 |  |
Çöpler Incident | Inventories |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Impairment charges of long-lived and other assets |  | 76,000 |  |  |
Çöpler Incident | Mineral properties, plant and equipment, net |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Impairment charges of long-lived and other assets |  | 38,200 |  |  |
Çöpler Incident | Reclamation |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Incurred costs |  |  | 11,229 |  |
Expenditures |  |  | 1,885 |  |
Reclamation and remediation liability |  |  | 9,344 | 0 |
Changes in estimates |  |  | 11,200 |  |
Çöpler Incident | Remediation |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Incurred costs |  | $ 261,700 | 261,674 |  |
Expenditures |  |  | 125,760 |  |
Reclamation and remediation liability |  |  | $ 135,914 | $ 0 |
Çöpler Incident | Minimum |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Estimated future cost | $ 250,000 |  |  |  |
Çöpler Incident | Maximum |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Estimated future cost | $ 300,000 |  |  |  |

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