v3.24.3
Loans and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses - Residential Mortgages (Detail) - Retail [member] - Residential mortgages [member] - CAD ($)
$ in Millions
12 Months Ended
Oct. 31, 2024
Oct. 31, 2023
Disclosure of credit risk exposure [line items]    
Balance at beginning of period $ 481 $ 432
Provision for credit losses    
Originations 94 89
Maturities (36) (26)
Changes in risk, parameters and exposures 56 11
Write-offs (23) (30)
Recoveries 13 13
Exchange rate and other (13) (8)
Balance at end of period 572 481
Performing Stage one [member]    
Disclosure of credit risk exposure [line items]    
Balance at beginning of period 223 235
Provision for credit losses    
Transfers to Stage 1 99 95
Transfers to Stage 2 (23) (26)
Transfers to Stage 3 (5) (2)
Originations 94 89
Maturities (19) (17)
Changes in risk, parameters and exposures (155) (152)
Exchange rate and other 1 1
Balance at end of period 215 223
Performing Stage two [member]    
Disclosure of credit risk exposure [line items]    
Balance at beginning of period 90 65
Provision for credit losses    
Transfers to Stage 1 (97) (95)
Transfers to Stage 2 36 38
Transfers to Stage 3 (42) (13)
Maturities (17) (9)
Changes in risk, parameters and exposures 157 103
Exchange rate and other (1) 1
Balance at end of period 126 90
Impaired Stage three [member]    
Disclosure of credit risk exposure [line items]    
Balance at beginning of period 168 132
Provision for credit losses    
Transfers to Stage 1 (2)  
Transfers to Stage 2 (13) (12)
Transfers to Stage 3 47 15
Changes in risk, parameters and exposures 54 60
Write-offs (23) (30)
Recoveries 13 13
Exchange rate and other (13) (10)
Balance at end of period $ 231 $ 168