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Mining interests and plant and equipment (Tables)
 12 Months Ended
Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [abstract]  
Disclosure of detailed information about mining interests and plant and equipment [Table Text Block]

    2022     2021  
    Mining
interests		     Plant and
equipment (i)		     Total     Mining
interests		     Plant and
equipment (i)		     Total  
    $     $     $      $     $      $  
                      (Note 4)              
                                     
Net book value - January 1   543,953     91,702     635,655     459,303     30,209     489,512  
Acquisition of Tintic by Osisko Development (Note 31)   169,175     13,054     182,229     -     -     -  
Additions   36,754     14,232     50,986     131,908     58,192     190,100  
Impairments   (81,000 )   -     (81,000 )   (58,417 )   -     (58,417 )
Mining exploration tax credits   (6,275 )   -     (6,275 )   (1,585 )   -     (1,585 )
Change in environmental
rehabilitation assets		   (3,797 )   -     (3,797 )   19,522     -     19,522  
Depreciation   (2,385 )   (10,550 )   (12,935 )   -     (7,814 )   (7,814 )
Depreciation capitalized   896     -     896     4,136     -     4,136  
Share-based compensation capitalized   388     -     388     2,127     -     2,127  
Transfers   -     -     -     (11,221 )   11,221     -  
Disposals and others   (1,559 )   (4,632 )   (6,191 )   -     (213 )   (213 )
Currency translation adjustments   21,183     3,384     24,567     (1,820 )   107     (1,713 )
Deconsolidation of Osisko Development
(Note 31)		   (677,333 )   (100,243 )   (777,576 )   -     -     -  
Net book value - December 31   -     6,947     6,947     543,953     91,702     635,655  
                                     
Closing balance                                    
Cost   -     11,889     11,889     602,370     105,112     707,482  
Accumulated depreciation
and impairment 		  -     (4,942 )   (4,942 )   (58,417 )   (13,410 )   (71,827 )
Net book value   -     6,947     6,947     543,953     91,702     635,655  

(i) Plant and equipment includes right-of-use assets of $6.8 million as at December 31, 2022 ($20.3 million as at December 31, 2021).
Disclosure of detailed information about property plant and equipment movements by category of assets [Table Text Block]
    2022  
    Land and
buildings		     Machinery
and equipment		     Construction-
in-progress		     Total
Plant and
equipment		  
    $     $     $      $  
                         
Net book value - Beginning of period   24,332     43,121     24,249     91,702  
Acquisition of Tintic by Osisko Development (Note 31)   6,940     4,420     1,694     13,054  
Additions   1,418     9,592     3,222     14,232  
Depreciation   (2,387 )   (8,163 )   -     (10,550 )
Transfers   (133 )   5,526     (5,393 )   -  
Disposals and others   (964 )   (3,668 )   -     (4,632 )
Currency translation adjustments   550     2,060     774     3,384  
Deconsolidation of Osisko Development (Note 31)   (22,885 )   (52,812 )   (24,546 )   (100,243 )
Net book value - End of period   6,871     76     -     6,947  
                         
Closing balance                        
Cost   10,877     1,012     -     11,889  
Accumulated depreciation and impairment   (4,006 )   (936 )   -     (4,942 )
Net book value   6,871     76     -     6,947