v3.25.4
Significant partly-owned subsidiary - Selected Income and Cash Flow Information (Details) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of subsidiaries [line items]    
Operating revenues $ 24,468 $ 24,409
Net earnings 6,514 375
Net earnings attributable to NCI 54 31
Total comprehensive income 7,896 863
Total comprehensive income attributable to NCI 52 34
Subsidiaries with material non-controlling interests    
Disclosure of subsidiaries [line items]    
Operating revenues 970 991
Net earnings 179 100
Net earnings attributable to NCI 54 31
Total comprehensive income 174 108
Total comprehensive income attributable to NCI 52 34
Cash dividends paid to NCI 51 68
CTV Specialty hedge    
Disclosure of subsidiaries [line items]    
Net earnings 0 2
Total comprehensive income $ 0 $ 2