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Loans, Impaired Loans and Allowance for Credit Losses - Loans Past Due But Not Impaired (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
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Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross | [1] | $ 778,508 | $ 767,365
Residential mortgages [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross |  | 370,191 | 350,941
Personal loans [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross |  | 110,567 | 106,379
Credit Card [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross |  | 18,045 | 17,374
Business and government [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross |  | 279,705 | 292,671
Financial assets past due but not impaired [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross | [2],[3] | 4,664 | 4,178
Financial assets past due but not impaired [member] | Residential mortgages [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross | [2],[3] | 2,370 | 2,136
Financial assets past due but not impaired [member] | Personal loans [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross | [2],[3] | 1,044 | 990
Financial assets past due but not impaired [member] | Credit Card [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Loans and receivables gross | [2],[3] | 908 | 812
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 | [2],[3] | 342 | 240
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 | [2],[3] | 2,821 | 2,499
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 | [2],[3] | 1,603 | 1,418
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 | [2],[3] | 691 | 647
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 | [2],[3] | 289 | 242
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 | [2],[3] | 238 | 192
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 | [2],[3] | 1,413 | 1,281
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 | [2],[3] | 767 | 718
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 | [2],[3] | 353 | 343
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 | [2],[3] | 189 | 172
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 | [2],[3] | 104 | 48
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 | [2],[3],[4] | 430 | 398
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 | [2],[3],[4] | $ 430 | $ 398
[1] | Geographic segmentation is based on the location of the property for residential mortgages; otherwise, the residence of the borrower.
[2] | For loans where payment deferrals were granted, deferred payments are not considered past due and such loans are not aged further during the deferral period. Regular aging of the loans resumes, after the end of the deferral period.
[3] | Loans past due 30 days or less are not presented in this analysis as they are not administratively considered past due.
[4] | 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.

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