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Goodwill and Other Intangible Assets - Summary of Intangible Assets (Parenthetical) (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2025 | Oct. 31, 2024
Disclosure of detailed information about intangible assets [line items] |  |
Impairment of finite lived intangible assets | $ 0 | $ 0
Colombia Costa Rica And Panama [Member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Impairment of finite lived intangible assets | 165 |
Purchased software [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Computer software | 262 | 194
Internally generated software [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Computer software | 1,633 | 1,939
In process software not subject to amortization [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Computer software | $ 896 | $ 900

X
- Definition The amount of intangible assets representing computer software. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 119 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_119_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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- Details
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- Details
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- Details
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