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OTHER NON-CURRENT ASSETS (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |
Receivables from governments | $ 66.3 | $ 0.0
Advances for the purchase of capital equipment | 16.4 | 18.5
Deferred consideration from the sale of Sadiola | 18.3 | 15.2
Royalty interests | 12.8 | 13.5
Long-term prepayment | 2.9 | 3.3
Income taxes receivable | 1.0 | 3.7
Other | 6.7 | 5.9
Other non-current assets | 135.7 | 76.3
Sadiola |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |
Deferred consideration - litigation settlement | 1.2 |
Deferred consideration - milestone payments | 17.1 |
Marketable securities |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |
Marketable securities and bond fund investments | 10.3 | 14.2
Bond fund investments |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |
Marketable securities and bond fund investments | $ 1.0 | $ 2.0

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