v3.24.3
Loans and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses - Small Business (Detail) - Retail [member] - Small business [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 $ 194 $ 194
Provision for credit losses    
Originations 43 36
Maturities (38) (39)
Changes in risk, parameters and exposures 173 46
Write-offs (98) (50)
Recoveries 14 11
Exchange rate and other (16) (4)
Balance at end of period 272 194
Performing Stage one [member]    
Disclosure of credit risk exposure [line items]    
Balance at beginning of period 70 73
Provision for credit losses    
Transfers to Stage 1 35 39
Transfers to Stage 2 (20) (14)
Transfers to Stage 3 (1) (1)
Originations 43 36
Maturities (17) (18)
Changes in risk, parameters and exposures (31) (48)
Exchange rate and other 1 3
Balance at end of period 80 70
Performing Stage two [member]    
Disclosure of credit risk exposure [line items]    
Balance at beginning of period 66 73
Provision for credit losses    
Transfers to Stage 1 (35) (39)
Transfers to Stage 2 20 14
Transfers to Stage 3 (10) (10)
Maturities (21) (21)
Changes in risk, parameters and exposures 65 44
Exchange rate and other 1 5
Balance at end of period 86 66
Impaired Stage three [member]    
Disclosure of credit risk exposure [line items]    
Balance at beginning of period 58 48
Provision for credit losses    
Transfers to Stage 3 11 11
Changes in risk, parameters and exposures 139 50
Write-offs (98) (50)
Recoveries 14 11
Exchange rate and other (18) (12)
Balance at end of period $ 106 $ 58