v3.26.1
Loans, Impaired Loans and Allowance for Credit Losses - Loans Past Due But Not Impaired (Detail) - CAD ($)
$ in Millions
Jul. 31, 2026
Apr. 30, 2026
Oct. 31, 2025
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross $ 777,884 $ 764,584 $ 778,508
Residential mortgages [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 366,643   370,191
Personal loans [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 108,016   110,567
Credit Card [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 16,365   18,045
Business and government [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross 286,860   279,705
Financial assets past due but not impaired [member]      
Disclosure of detailed information about financial instruments [line items]      
Loans and receivables gross [1] 3,964 3,901 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] 2,057 1,994 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] 826 863 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] 732 755 908
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] 349 289 342
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] 2,466 2,327 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] 1,413 1,352 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] 558 580 691
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] 215 232 289
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] 280 163 238
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] 1,138 1,213 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] 644 642 767
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] 268 283 353
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] 157 162 189
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] 69 126 104
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] 360 361 430
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] $ 360 $ 361 $ 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.