v3.26.1
Loans and Allowance for Credit Losses - Reconciliation of Allowance for Credit Losses - Credit Cards (Detail) - Retail [member] - Credit cards [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 $ 1,351 $ 1,320 $ 1,356 $ 1,233
Provision for credit losses        
Originations 4 7 10 12
Maturities (13) (15) (41) (44)
Changes in risk, parameters and exposures 263 225 768 729
Write-offs (273) (262) (857) (742)
Recoveries 34 48 132 136
Exchange rate and other 0 0 (1)
Balance at end of period 1,368 1,323 1,368 1,323
Performing Stage one [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 269 202 217 207
Provision for credit losses        
Transfers to stage 1 164 169 476 503
Transfers to stage 2 (30) (27) (83) (83)
Transfers to stage 3 (1) (1) (2) (2)
Originations 4 7 10 12
Maturities (1) (2) (3) (4)
Changes in risk, parameters and exposures (123) (135) (332) (418)
Exchange rate and other 1   0 (2)
Balance at end of period 283 213 283 213
Performing Stage two [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 1,082 1,118 1,139 1,026
Provision for credit losses        
Transfers to stage 1 (164) (169) (476) (503)
Transfers to stage 2 30 27 83 83
Transfers to stage 3 (158) (159) (470) (442)
Maturities (12) (13) (38) (40)
Changes in risk, parameters and exposures 306 306 847 986
Exchange rate and other 1   0  
Balance at end of period 1,085 1,110 1,085 1,110
Impaired Stage three [member]        
Provision for credit losses        
Transfers to stage 3 159 160 472 444
Changes in risk, parameters and exposures 80 54 253 161
Write-offs (273) (262) (857) (742)
Recoveries $ 34 48 $ 132 136
Exchange rate and other   $ 0   $ 1