v3.26.3
DESCRIPTION OF BUSINESS AND SEGMENTED DISCLOSURES - Additional Information (Details) - plant
9 Months Ended
Sep. 30, 2025
Sep. 30, 2026
WRB Refining LP    
Disclosure of operating segments [line items]    
Share of equity investment 50.00%  
Canadian Refining | Downstream    
Disclosure of operating segments [line items]    
Number of ethanol plants   2