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v3.25.3

Events after the Consolidated Statement of Financial Position date - Additional Information (Detail) - CAD ($) $ in Millions |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 01, 2025 | Jan. 06, 2025 | Jan. 31, 2026 | Oct. 31, 2025
Major business combination [member] |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |
Proportion of ownership interest in associate | 20.00% |  |  |
Colombia Costa Rica and Panama [Member] |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |
Gains (losses) on exchange differences on translation of foreign operations, net of tax |  |  |  | $ 249
Proportion of ownership interest in associate |  | 20.00% |  |
Colombia Costa Rica and Panama [Member] | Other Segment [Member] |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |
Gains (losses) on exchange differences on translation of foreign operations, net of tax |  |  | $ 300 |

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