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Derivative Financial Instruments - Summary of Average Price or Rate of Hedging Instruments (Detail) | Oct. 31, 2025 | Oct. 31, 2024
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Fair value hedges [member] | Interest rate risk [member] | Swaps [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Fixed interest rate | 2.98% | 3.16%
Cash flow hedges [member] | Interest rate risk [member] | Swaps [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Fixed interest rate | 3.26% | 3.16%
Cash flow hedges [member] | Currency or interest rate risk [member] | Swaps [member] | USD-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Fixed interest rate | 2.00% | 1.89%
FX rate | 1.31 | 1.3
Cash flow hedges [member] | Currency risk [member] | Swaps [member] | USD-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 1.34 | 1.31
Cash flow hedges [member] | Currency risk [member] | Swaps [member] | EUR-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 1.47 | 1.46
Cash flow hedges [member] | Currency risk [member] | Swaps [member] | GBP-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 1.74 | 1.7
Cash flow hedges [member] | Equity price risk [member] | Total return swaps [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Price | 68.85 | 69.11
Hedges of net investment in foreign operations [member] | Currency risk [member] | Foreign currency forward contracts [member] | USD-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 1.37 | 1.35
Hedges of net investment in foreign operations [member] | Currency risk [member] | Foreign currency forward contracts [member] | CLP-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 0.0014 | 0.0014
Hedges of net investment in foreign operations [member] | Currency risk [member] | Foreign currency forward contracts [member] | MXN-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 0.07 | 0.07
Hedges of net investment in foreign operations [member] | Currency risk [member] | Foreign currency forward contracts [member] | PEN-CAD [Member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
FX rate | 0.38 | 0.36

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- Definition The average price of a hedging instrument. [Refer: Hedging instruments [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 23B -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_23B_b&doctype=Standard -URIDate 2024-03-27 + Details
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