Significant Transactions - Additional information (Detail) $ in Billions	Sep. 02, 2021 CAD ($)
Canadian Costco Credit Card Portfolio [Member]
Disclosure of detailed information about business combination [line items]
Outstanding Credit Card Receivables To Be Acquired	$ 3

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.

No definition available.

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