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Fair value of financial instruments - Disclosure of detailed information about changes in fair value of level 3 investments (Details) - Level 3 [Member] - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of fair value measurement of assets [line items] |  |
Balance - January 1 | $ 26,903 | $ 34,934
Acquisitions | 0 | 7,968
Warrants exercised | 0 | (80)
Acquisition of Tintic by Osisko Development | 0 | (10,827)
Transfer of common shares from level 3 to level 1 | (3,000) | 0
Disposal | (5,000) | 0
Foreign exchange revaluation impact | 0 | 49
Deconsolidation of Osisko Development | 0 | (110)
Balance - December 31 | 9,105 | 26,903
Warrants exercised [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Change in fair value | 0 | 322
Warrants expired [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Change in fair value | (552) | (405)
Investments held at the end of the period [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Change in fair value | $ (9,246) | $ (4,304)

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- Definition The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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