XML 203 R160.htm IDEA: XBRL DOCUMENT v3.25.3
Employee Compensation - Pension and Other Employee Future Benefits - Summary of Pension and Other Employee Future Benefit Expenses (Detail) - CAD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Pension Plans [member]    
Disclosure of defined benefit plans [line items]    
Current service cost $ 177 $ 153
Net interest (income) expense (51) (61)
Impact of plan amendments (19)  
Administrative expenses 8 11
Benefits expense 115 103
Government pension plans expense 388 375
Defined contribution expense 306 290
Total annual pension and other employee future benefit expenses (recovery) recognized in our Consolidated Statement of Income 809 768
Other employee future benefit plans [member]    
Disclosure of defined benefit plans [line items]    
Current service cost 6 5
Net interest (income) expense 38 40
Impact of plan amendments   (84)
Remeasurement of other long-term benefits 24 5
Benefits expense 68 (34)
Total annual pension and other employee future benefit expenses (recovery) recognized in our Consolidated Statement of Income $ 68 $ (34)