Investments in Associates - Summary of Significant Investments in Associates (Detail) - CAD ($) $ in Millions	9 Months Ended
Jul. 31, 2021	Apr. 30, 2021	Oct. 31, 2020
Canadian tire financial services business [member]
Disclosure of associates [line items]
Country of incorporation	Canada
Nature of business	Financial Services
Ownership percentage	20.00%
Date of financial statements	Jun. 30, 2021
Carrying value	$ 531	$ 521	$ 534
Bank of Xian Co Ltd [member]
Disclosure of associates [line items]
Country of incorporation	China
Nature of business	Banking
Ownership percentage	17.99%
Date of financial statements	Jun. 30, 2021
Carrying value	$ 945	935	926
Maduro and curiels bank NV [member]
Disclosure of associates [line items]
Country of incorporation	Curacao
Nature of business	Banking
Ownership percentage	48.10%
Date of financial statements	Jun. 30, 2021
Carrying value	$ 359	$ 344	$ 355

The country in which an associate of the entity is incorporated. [Refer: Associates [member]]

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- Definition

The date of the end of the reporting period of the financial statements of an associate.

+ References

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- Definition

The description of the nature of the entity's relationship with an associate (for example, describing the nature of the activities of the associate and whether they are strategic to the entity's activities). [Refer: Associates [member]]

+ References

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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No definition available.

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The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]]

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The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

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