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Accounting and Reporting Changes - Additional Information (Detail) - CAD ($) $ in Millions	Jan. 01, 2023	Jan. 01, 2022
Disclosure of changes in accounting estimates [line items]
Increase (decrease) in equity		$ 15,766
Contractual service margin liability		21,466
Debt securities [member]
Disclosure of changes in accounting estimates [line items]
Reclassification of financial assets out of measured at fair value through profit or loss into measured at fair value through other comprehensive income	$ 184,000
IFRS 17 [member]
Disclosure of changes in accounting estimates [line items]
Increase (decrease) in equity		$ 11,997

X

- Definition

The increase (decrease) in equity. [Refer: Equity]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of financial assets reclassified out of the fair value through profit or loss measurement category and into the fair value through other comprehensive income measurement category. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2022-03-24
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