v3.24.3
Employee benefits - Pension and other post-employment benefits - Sensitivity Analysis of Key Assumptions (Detail)
$ in Millions
Oct. 31, 2024
CAD ($)
Defined benefit pension plans [member] | Impact of 100 bps in discount rate [member]  
Disclosure of sensitivity analysis for actuarial assumptions [line items]  
Impact of increase in actuarial assumption $ (1,572)
Impact of decrease in actuarial assumption 1,941
Defined benefit pension plans [member] | Impact of 50 bps in rate of increase in future compensation [member]  
Disclosure of sensitivity analysis for actuarial assumptions [line items]  
Impact of increase in actuarial assumption 35
Impact of decrease in actuarial assumption (38)
Defined benefit pension plans [member] | Impact of increase in longevity of one additional year [member]  
Disclosure of sensitivity analysis for actuarial assumptions [line items]  
Impact of increase in actuarial assumption 329
Post employment plan [member] | Impact of 100 bps in discount rate [member]  
Disclosure of sensitivity analysis for actuarial assumptions [line items]  
Impact of increase in actuarial assumption (178)
Impact of decrease in actuarial assumption 220
Post employment plan [member] | Impact of increase in longevity of one additional year [member]  
Disclosure of sensitivity analysis for actuarial assumptions [line items]  
Impact of increase in actuarial assumption 22
Post employment plan [member] | Impact of 100 bps in Healthcare cost trend rate [member]  
Disclosure of sensitivity analysis for actuarial assumptions [line items]  
Impact of increase in actuarial assumption 49
Impact of decrease in actuarial assumption $ (41)