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OTHER NON-CURRENT ASSETS (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 06, 2017 | Dec. 31, 2021 USD ($) oz | Dec. 31, 2018 USD ($) | Dec. 31, 2020 USD ($)
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |
Deferred consideration from the sale of Sadiola |  | $ 18,900,000 |  | $ 14,300,000
Advances for the purchase of capital equipment1 |  | 44,600,000 |  | 9,100,000
Long-term loan receivable |  | 10,700,000 |  | 0
Income taxes receivable |  | 27,000,000.0 |  | 9,300,000
Royalty interests2 |  | 12,800,000 |  | 5,600,000
Long-term prepayment |  | 4,000,000.0 |  | 4,300,000
Hedge derivatives |  | 34,000,000.0 |  | 26,300,000
Non-current non-derivative financial assets |  | 1,800,000 |  | 0
Other |  | 5,700,000 |  | 4,600,000
Other assets |  | $ 204,600,000 |  | 96,100,000
Number of ounces | oz |  | 375,000 |  |
Acquisition of royalty interest |  | $ 7,150,000 |  |
Number of ounces | oz |  | 375,000 |  |
Contract term | 15 years |  |  |
Prepayment issued during period |  |  | $ 4,900,000 |
Utilisation of prepayment issued |  |  |  | 300,000
Minimum |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |
Number of ounces | oz |  | 37,500 |  |
Number of ounces | oz |  | 37,500 |  |
Côté Gold project |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |
Advances for the purchase of capital equipment1 |  | $ 33,000,000 |  | 0
Marketable securities and warrants |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |
Marketable securities and warrants and bond fund investments |  | 40,400,000 |  | 16,400,000
Bond fund investments |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |
Marketable securities and warrants and bond fund investments |  | $ 4,700,000 |  | $ 6,200,000

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