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SEGMENTED INFORMATION - Balance Sheet (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of operating segments [line items] |  |
Total non- current assets | $ 4,706.1 | $ 3,784.2
Assets | 5,374.4 | 4,537.9
Total liabilities | 1,973.7 | 2,273.8
Assets held for sale |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 0.0 | 0.0
Assets | 0.0 | 34.6
Total liabilities | 0.0 | 5.6
Gold mines |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 4,557.2 | 3,643.8
Assets | 5,044.4 | 4,127.9
Total liabilities | 708.9 | 767.1
Gold mines | Côté Gold |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 2,887.0 | 2,521.5
Assets | 3,016.0 | 2,638.0
Total liabilities | 227.3 | 243.2
Gold mines | Essakane |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 882.2 | 764.4
Assets | 1,206.2 | 1,100.4
Total liabilities | 281.9 | 274.2
Gold mines | Westwood complex |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 788.0 | 357.9
Assets | 822.2 | 389.5
Total liabilities | 199.7 | 249.7
Exploration and evaluation and development |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 74.4 | 37.7
Assets | 77.7 | 47.4
Total liabilities | 9.3 | 1.3
Corporate |  |
Disclosure of operating segments [line items] |  |
Total non- current assets | 74.5 | 102.7
Assets | 252.3 | 328.0
Total liabilities | $ 1,255.5 | $ 1,499.8

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