v3.25.4
EQUITY - Dividends (Details) - CAD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended 12 Months Ended
Jan. 28, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2025
Disclosure of classes of share capital [line items]                    
Dividends per share (in dollars per share)   $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50  
Dividends paid in cash   $ 270 $ 270 $ 270 $ 188 $ 185 $ 181 $ 185 $ 183  
Dividends paid, total   270 270 270 269 269 267 266 266  
Dividend reinvestment plan, discount on volume weighted average market price, period                   5 days
Class B Non-Voting Shares                    
Disclosure of classes of share capital [line items]                    
Dividends paid in class B non-voting shares   $ 0 $ 0 $ 0 $ 81 $ 84 $ 86 $ 81 $ 83  
Number of Class B non-voting shares issued   0 0 0 2,181 1,943 1,633 1,651 1,552 0
Entitled rate per share of dividends (in canadian dollars per share)                   $ 0.05
Class B Non-Voting Shares | Announcement Of Dividends Declared                    
Disclosure of classes of share capital [line items]                    
Quarterly dividend declared $ 0.50                  
Class A Voting Shares                    
Disclosure of classes of share capital [line items]                    
Entitled rate per share of dividends (in canadian dollars per share)                   $ 0.05
Class A Voting Shares | Announcement Of Dividends Declared                    
Disclosure of classes of share capital [line items]                    
Quarterly dividend declared $ 0.50