v3.26.1
Share repurchases - Narrative (Details) - CAD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended 8 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Oct. 29, 2025
Feb. 02, 2026
Mar. 03, 2025
February 2026 Normal Course Issuer Bid (NCIB)          
Share Repurchase Program [Line Items]          
Common Shares authorized to be repurchased       44.9  
Share Repurchase Program, Accrued Tax Liability $ 25 $ 36      
March 2025 Normal Course Issuer Bid (NCIB)          
Share Repurchase Program [Line Items]          
Common Shares authorized to be repurchased         37.3
Common Shares repurchased (in shares)     37.3