v3.24.1.1.u2
Employee Benefits (Summary of Remeasurement of Defined Benefit Plans) (Details) - CAD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2024
Apr. 30, 2023
Principal pension plans [member]        
Disclosure of net defined benefit liability (asset) [line items]        
Remeasurement gain/(loss) - financial $ 439 $ (147) $ (685) $ (529)
Remeasurement gain/(loss) - return on plan assets less interest income (524) 38 276 424
Changes in asset limitation and minimum funding requirement 24 63 200 179
Amounts Recognized in Other Comprehensive Income for Remeasurement of Defined Benefit Plans (61) (46) (209) 74
Principal post retirement benefit plan [Member]        
Disclosure of net defined benefit liability (asset) [line items]        
Remeasurement gain/(loss) - financial 13 (3) (23) (27)
Remeasurement gain/(loss) - return on plan assets less interest income 0 0 0 0
Changes in asset limitation and minimum funding requirement 0 0 0 0
Amounts Recognized in Other Comprehensive Income for Remeasurement of Defined Benefit Plans 13 (3) (23) (27)
Other pension plans [Member]        
Disclosure of net defined benefit liability (asset) [line items]        
Remeasurement gain/(loss) - financial 18 0 (25) 0
Remeasurement gain/(loss) - return on plan assets less interest income 0 0 0 0
Changes in asset limitation and minimum funding requirement 0 0 0 0
Amounts Recognized in Other Comprehensive Income for Remeasurement of Defined Benefit Plans $ 18 $ 0 $ (25) $ 0