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 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 $ 1,348 $ 1,264 $ 1,356 $ 1,233
Provision for credit losses        
Originations 4 3 6 5
Maturities (13) (16) (28) (29)
Changes in risk, parameters and exposures 262 270 505 504
Write-offs (301) (246) (584) (480)
Recoveries 51 47 98 88
Exchange rate and other 0 (2) (2) (1)
Balance at end of period 1,351 1,320 1,351 1,320
Performing Stage one [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 210 206 217 207
Provision for credit losses        
Transfers to stage 1 143 179 312 334
Transfers to stage 2 (26) (28) (53) (56)
Transfers to stage 3 (1)   (1) (1)
Originations 4 3 6 5
Maturities (1) (1) (2) (2)
Changes in risk, parameters and exposures (60) (155) (209) (283)
Exchange rate and other 0 (2) (1) (2)
Balance at end of period 269 202 269 202
Performing Stage two [member]        
Disclosure of credit risk exposure [line items]        
Balance at beginning of period 1,138 1,058 1,139 1,026
Provision for credit losses        
Transfers to stage 1 (143) (179) (312) (334)
Transfers to stage 2 26 28 53 56
Transfers to stage 3 (148) (146) (312) (283)
Maturities (12) (15) (26) (27)
Changes in risk, parameters and exposures 221 373 541 680
Exchange rate and other 0 (1) (1)  
Balance at end of period 1,082 1,118 1,082 1,118
Impaired Stage three [member]        
Provision for credit losses        
Transfers to stage 3 149 146 313 284
Changes in risk, parameters and exposures 101 52 173 107
Write-offs (301) (246) (584) (480)
Recoveries $ 51 47 $ 98 88
Exchange rate and other   $ 1   $ 1