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Contingent Liabilities and Provisions - Additional Information (Detail) - Legal proceedings contingent liability [member] $ in Billions	Apr. 30, 2025 CAD ($)
Bottom of range [member]
Disclosure Of Contingent Assets And Liabilities [Line Items]
Estimated financial effect of contingent liabilities	$ 0.0
Top of range [member]
Disclosure Of Contingent Assets And Liabilities [Line Items]
Estimated financial effect of contingent liabilities	$ 0.8

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- Definition

Disclosure Of Contingent Assets And Liabilities [Line Items]

+ References

No definition available.

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- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2024-01-01
-Paragraph 86
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_86_a&doctype=Standard
-URIDate 2024-03-27

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