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 9 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Disclosure of credit risk exposure [line items]        
Balance at beginning of period $ 904 $ 730 $ 794 $ 572
Provision for credit losses        
Model changes     43  
Originations 17 27 58 74
Maturities (23) (13) (65) (37)
Changes in risk, parameters and exposures 31 32 148 203
Write-offs (14) (3) (26) (12)
Recoveries 3 4 9 9
Exchange rate and other (18) (10) (61) (42)
Balance at end of period 900 767 900 767
Performing Stage one [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 215 259 276 215
Provision for credit losses        
Model changes     (88)  
Transfers to stage 1 112 57 266 116
Transfers to stage 2 (9) (15) (31) (33)
Transfers to stage 3   (2) (4) (4)
Originations 17 27 58 74
Maturities (6) (7) (21) (17)
Changes in risk, parameters and exposures (94) (50) (221) (83)
Exchange rate and other   (1)    
Balance at end of period 235 268 235 268
Performing Stage two [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 308 209 204 126
Provision for credit losses        
Model changes     131  
Transfers to stage 1 (110) (53) (259) (112)
Transfers to stage 2 9 15 32 39
Transfers to stage 3 (18) (12) (52) (36)
Maturities (17) (6) (44) (20)
Changes in risk, parameters and exposures 110 66 272 224
Exchange rate and other 2 2    
Balance at end of period 284 221 284 221
Impaired Stage three [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 381 262 314 231
Provision for credit losses        
Transfers to stage 1 (2) (4) (7) (4)
Transfers to stage 2     (1) (6)
Transfers to stage 3 18 14 56 40
Changes in risk, parameters and exposures 15 16 97 62
Write-offs (14) (3) (26) (12)
Recoveries 3 4 9 9
Exchange rate and other (20) (11) (61) (42)
Balance at end of period $ 381 $ 278 $ 381 $ 278