v3.26.1
Loans and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses - Small Business (Detail) - Retail [member] - Small business [member] - CAD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Disclosure of credit risk exposure [line items]        
Balance at beginning of period $ 362 $ 289 $ 351 $ 272
Provision for credit losses        
Originations 11 11 22 20
Maturities (19) (10) (43) (21)
Changes in risk, parameters and exposures 7 87 63 135
Write-offs (31) (31) (65) (60)
Recoveries 6 3 13 8
Exchange rate and other (7) (6) (12) (11)
Balance at end of period 329 343 329 343
Performing Stage one [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 101 80 95 80
Provision for credit losses        
Transfers to stage 1 20 10 35 23
Transfers to stage 2 (8) (7) (13) (11)
Transfers to stage 3 (1) (1) (1) (1)
Originations 11 11 22 20
Maturities (8) (4) (13) (10)
Changes in risk, parameters and exposures (18) 7 (30) (6)
Exchange rate and other 0 2 2 3
Balance at end of period 97 98 97 98
Performing Stage two [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 113 87 117 86
Provision for credit losses        
Transfers to stage 1 (20) (10) (35) (23)
Transfers to stage 2 8 7 13 11
Transfers to stage 3 (6) (3) (11) (6)
Maturities (11) (6) (30) (11)
Changes in risk, parameters and exposures 31 39 60 57
Exchange rate and other 1   2  
Balance at end of period 116 114 116 114
Impaired Stage three [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 148 122 139 106
Provision for credit losses        
Transfers to stage 3 7 4 12 7
Changes in risk, parameters and exposures (6) 41 33 84
Write-offs (31) (31) (65) (60)
Recoveries 6 3 13 8
Exchange rate and other (8) (8) (16) (14)
Balance at end of period $ 116 $ 131 $ 116 $ 131