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Other investments - Disclosure of detailed information about other investments (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Other Investments [Line Items] |  |
Total | $ 93,025 | $ 73,504
Fair value through profit or loss (warrants and convertible instruments) [Member] |  |
Other Investments [Line Items] |  |
Balance - January 1 | 24,217 | 47,981
Acquisitions | 0 | 4,438
Disposals | (5,000) | 0
Exercise of warrants | 0 | (80)
Interest capitalized | 2,888 | 0
Change in fair value | (13,156) | (17,236)
Acquisition of Tintic by Osisko Development | 0 | (10,827)
Foreign exchange revaluation impact | 0 | 50
Investments held by Osisko Development and deconsolidated on September 30, 2022 | 0 | (109)
Balance - December 31 | 8,949 | 24,217
Fair value through other comprehensive (loss) income (common shares) [Member] |  |
Other Investments [Line Items] |  |
Balance - January 1 | 18,337 | 94,231
Acquisitions | 53,008 | 5,260
Transfer from associates | 7,159 | 15,343
Disposals | (28) | (21,634)
Change in fair value | 5,915 | (43,486)
Foreign exchange revaluation impact | (315) | 0
Investments held by Osisko Development and deconsolidated on September 30, 2022 | 0 | (31,377)
Balance - December 31 | 84,076 | 18,337
Amortized cost (notes) [Member] |  |
Other Investments [Line Items] |  |
Balance - January 1 | 30,950 | 26,798
Acquisitions | 0 | 5,175
Repayments | 0 | (2,960)
Allowance for expected credit loss and write-offs | (30,615) | 0
Foreign exchange revaluation impact | (335) | 1,937
Balance - December 31 | $ 0 | $ 30,950

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