v3.26.1
STOCK-BASED COMPENSATION - Stock options (Details) - Employee stock options
 12 Months Ended
Apr. 24, 2021
Dec. 31, 2025
CAD ($)
Options
$ / shares
Dec. 31, 2024
CAD ($)
Options
$ / shares
Dec. 31, 2021
shares
Share based compensation        
Number of common shares that reserved for issuance to any one person under ESOP (in percentage)   5.00%    
Number of common shares reserved for issuance | shares       38,700,000
Percentage of stock options vested within 30 days of grant date   25.00%    
Vesting period   3 years    
Number of stock options        
Outstanding, beginning of year | Options   2,125,773 4,646,412  
Granted during the year | Options   873,464 1,021,400  
Exercised during the year | Options   (1,366,407) (3,402,181)  
Forfeited during the year | Options   (68,293) (126,933)  
Expired during the year | Options   (4,725) (12,925)  
Outstanding, end of year | Options   1,559,812 2,125,773  
Options exercisable, end of year | Options   278,566 632,584  
Weighted average exercise price        
Options outstanding, beginning of year   $ 72.37 $ 77.54  
Granted during the year   112.46 72.65  
Exercised during the year   77.96 79.34  
Forfeited during the year   90.26 76.81  
Expired during the year   73.23 74.9  
Options outstanding, end of year   89.13 72.37  
Options exercisable, end of year   77.17 76.15  
Average share price of common shares   $ 180.33 $ 94.89  
Weighted average grant date fair value of stock options granted | $   $ 18.52 $ 13.85  
Maximum        
Share based compensation        
Option term (expiration period) 5 years