v3.26.1
Loans and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses - Residential Mortgages (Detail) - Retail [member] - Residential mortgages [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 $ 845 $ 636 $ 794 $ 572
Provision for credit losses        
Model changes 43   43  
Originations 14 24 41 47
Maturities (25) (13) (42) (24)
Changes in risk, parameters and exposures 50 110 117 171
Write-offs (6) (5) (12) (9)
Recoveries 3 3 6 5
Exchange rate and other (20) (25) (43) (32)
Balance at end of period 904 730 904 730
Performing Stage one [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 272 218 276 215
Provision for credit losses        
Model changes (88)   (88)  
Transfers to stage 1 110 34 154 59
Transfers to stage 2 (10) (14) (22) (18)
Transfers to stage 3 (1) (1) (4) (2)
Originations 14 24 41 47
Maturities (7) (5) (15) (10)
Changes in risk, parameters and exposures (76) 4 (127) (33)
Exchange rate and other 1 (1)   1
Balance at end of period 215 259 215 259
Performing Stage two [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 215 158 204 126
Provision for credit losses        
Model changes 131   131  
Transfers to stage 1 (107) (34) (149) (59)
Transfers to stage 2 10 18 23 24
Transfers to stage 3 (21) (10) (34) (24)
Maturities (18) (8) (27) (14)
Changes in risk, parameters and exposures 99 89 162 158
Exchange rate and other (1) (4) (2) (2)
Balance at end of period 308 209 308 209
Impaired Stage three [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 358 260 314 231
Provision for credit losses        
Transfers to stage 1 (3)   (5)  
Transfers to stage 2 0 (4) (1) (6)
Transfers to stage 3 22 11 38 26
Changes in risk, parameters and exposures 27 17 82 46
Write-offs (6) (5) (12) (9)
Recoveries 3 3 6 5
Exchange rate and other (20) (20) (41) (31)
Balance at end of period $ 381 $ 262 $ 381 $ 262