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Exploration and evaluation
 12 Months Ended
Dec. 31, 2022
Disclosure of Exploration and evaluation assets [Abstract]  
Exploration and evaluation [Text Block]

13.Exploration and evaluation

    2022     2021  
    $     $  
Net book value - January 1   3,635     42,519  
Acquisition of Tintic by Osisko Development (Note 31)   38,508     -  
Additions   4,519     3,784  
Impairment (i)   -     (42,668 )
Other adjustments   (417 )   -  
Currency translation adjustments   3,138     -  
Deconsolidation of Osisko Development (Note 31)   (49,383 )   -  
Net book value - December 31   -     3,635  
Closing balance            
Cost   -     104,492  
Accumulated impairments   -     (100,857 )
Net book value   -     3,635  
(i)In 2021, Osisko Development incurred an impairment charge of $42.7 million ($34.6 million, net of income taxes) on exploration and evaluation properties, including the James Bay properties and the Coulon zinc project in Canada. Osisko Development determined that further exploration and evaluation expenditures were no longer planned in the near term on these properties and that the carrying amount of these assets was unlikely to be recovered from a sale of these properties at the time. As a result, these properties were written down to zero on December 31, 2021.