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RESTRICTED CASH (Details) € in Millions, $ in Millions, $ in Millions, XOF in Billions | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2023 CAD ($) | Dec. 31, 2023 XOF | Dec. 31, 2022 USD ($) | Dec. 31, 2022 XOF
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Schedule Of Fair Value, Off-balance Sheet Risks1 [Line Items] |  |  |  |  |  |
Non-current restricted cash | $ 90.5 |  |  |  | $ 56.3 |
Essakane mine |  |  |  |  |  |
Schedule Of Fair Value, Off-balance Sheet Risks1 [Line Items] |  |  |  |  |  |
Non-current restricted cash | 52.6 |  |  | XOF 31.2 | 45.3 | XOF 27.8
Collateral for surety bonds issued for Guarantee of certain environmental closure costs obligations | 24.2 | € 21.9 |  |  |  |
Doyon and Côté Gold |  |  |  |  |  |
Schedule Of Fair Value, Off-balance Sheet Risks1 [Line Items] |  |  |  |  |  |
Collateral for surety bonds issued for Guarantee of certain environmental closure costs obligations | 11.4 |  |  |  | 11.0 |
Doyon division including the Westwood mine1 |  |  |  |  |  |
Schedule Of Fair Value, Off-balance Sheet Risks1 [Line Items] |  |  |  |  |  |
Collateral for surety bonds issued for Guarantee of certain environmental closure costs obligations | $ 2.3 |  | $ 3.0 |  | $ 0.0 |

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