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Post-Employment Benefits - Summary of Defined Contributions Plan Expense (Detail) - CAD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2025 | Jan. 31, 2025 | Apr. 30, 2024 | Apr. 30, 2025 | Apr. 30, 2024
Disclosure of defined contribution plans [line items] |  |  |  |  |
Expense recognized in consolidated statement of income | $ 81 | $ 76 | $ 68 | $ 157 | $ 133
Defined contribution pension plans [member] |  |  |  |  |
Disclosure of defined contribution plans [line items] |  |  |  |  |
Expense recognized in consolidated statement of income | 23 | 20 | 16 | 43 | 38
Government pension plans [member] |  |  |  |  |
Disclosure of defined contribution plans [line items] |  |  |  |  |
Expense recognized in consolidated statement of income | $ 58 | $ 56 | $ 52 | $ 114 | $ 95

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 53 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_53&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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