v3.26.1
Loans, Impaired Loans and Allowance for Credit Losses - Loans Past Due But Not Impaired (Detail) - CAD ($)
$ in Millions
Apr. 30, 2026
Jan. 31, 2026
Oct. 31, 2025
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross $ 764,584 $ 762,477 $ 778,508
Residential mortgages [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 368,495   370,191
Personal loans [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 108,355   110,567
Credit Card [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 16,040   18,045
Business and government [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 271,694   279,705
Financial assets past due but not impaired [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 3,901 4,159 4,664
Financial assets past due but not impaired [member] | Residential mortgages [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 1,994 2,183 2,370
Financial assets past due but not impaired [member] | Personal loans [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 863 890 1,044
Financial assets past due but not impaired [member] | Credit Card [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 755 809 908
Financial assets past due but not impaired [member] | Business and government [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 289 277 342
31 - 60 days [member] | Financial assets past due but not impaired [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 2,327 2,494 2,821
31 - 60 days [member] | Financial assets past due but not impaired [member] | Residential mortgages [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 1,352 1,489 1,603
31 - 60 days [member] | Financial assets past due but not impaired [member] | Personal loans [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 580 581 691
31 - 60 days [member] | Financial assets past due but not impaired [member] | Credit Card [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 232 219 289
31 - 60 days [member] | Financial assets past due but not impaired [member] | Business and government [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 163 205 238
61 - 90 days [member] | Financial assets past due but not impaired [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 1,213 1,253 1,413
61 - 90 days [member] | Financial assets past due but not impaired [member] | Residential mortgages [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 642 694 767
61 - 90 days [member] | Financial assets past due but not impaired [member] | Personal loans [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 283 309 353
61 - 90 days [member] | Financial assets past due but not impaired [member] | Credit Card [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 162 178 189
61 - 90 days [member] | Financial assets past due but not impaired [member] | Business and government [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 126 72 104
91 days and greater [member] | Financial assets past due but not impaired [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1],[2] 361 412 430
91 days and greater [member] | Financial assets past due but not impaired [member] | Credit Card [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1],[2] $ 361 $ 412 $ 430
[1] Loans up to 30 days past due are not presented in this analysis as they are not administratively considered past due.
[2] All loans that are over 90 days past due are considered impaired with the exception of credit card receivables which are considered impaired when 180 days past due.