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Significant accounting policies - Disclosure of geographic locations, related participation and principal operating segment (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Osisko Bermuda Limited [Member]    
Significant Accounting Policies [Line Items]    
Participation 100.00% 100.00%
Osisko Mining (USA) Inc. [Member]    
Significant Accounting Policies [Line Items]    
Participation 100.00% 100.00%
Osisko Development Corp. [Member]    
Significant Accounting Policies [Line Items]    
Participation   75.10%