v3.26.1
Loans and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses - Personal (Detail) - Retail [member] - Personal [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 $ 1,607 $ 1,633 $ 1,639 $ 1,482
Provision for credit losses        
Model changes     (54)  
Originations 74 26 153 79
Maturities (76) (75) (219) (207)
Changes in risk, parameters and exposures 250 233 759 847
Write-offs (255) (237) (748) (675)
Recoveries 47 40 132 111
Exchange rate and other (4) 3 (19) (14)
Balance at end of period 1,643 1,623 1,643 1,623
Performing Stage one [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 340 304 291 305
Provision for credit losses        
Model changes     84  
Transfers to stage 1 194 155 502 440
Transfers to stage 2 (24) (22) (67) (75)
Transfers to stage 3 (2) (1) (4) (3)
Originations 74 26 153 79
Maturities (10) (13) (30) (39)
Changes in risk, parameters and exposures (212) (157) (569) (415)
Exchange rate and other (1) 1 (1) 1
Balance at end of period 359 293 359 293
Performing Stage two [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 1,036 1,110 1,115 966
Provision for credit losses        
Model changes     (138)  
Transfers to stage 1 (193) (155) (501) (439)
Transfers to stage 2 24 22 67 78
Transfers to stage 3 (38) (42) (114) (121)
Maturities (66) (62) (188) (168)
Changes in risk, parameters and exposures 286 238 810 796
Exchange rate and other 2 (1)   (2)
Balance at end of period 1,051 1,110 1,051 1,110
Impaired Stage three [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 231 219 233 211
Provision for credit losses        
Transfers to stage 1 (1)   (1) (1)
Transfers to stage 2       (3)
Transfers to stage 3 40 43 118 124
Maturities     (1)  
Changes in risk, parameters and exposures 176 152 518 466
Write-offs (255) (237) (748) (675)
Recoveries 47 40 132 111
Exchange rate and other (5) 3 (18) (13)
Balance at end of period $ 233 $ 220 $ 233 $ 220