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Investment Contract Liabilities - Summary of Investment Contract Liabilities Measured at Amortized Cost and Fair Value Associated with Contracts (Parenthetical) (Detail) - CAD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of Investment Contract Liabilities [line items]
Investment contract liabilities reinsured	$ 48	$ 67
Investment contract liabilities	3,117	3,288
Carrying amount [member]
Disclosure of Investment Contract Liabilities [line items]
Investment contract liabilities reinsured	48	67
Investment contract liabilities	2,267	2,289
Fair value [Member]
Disclosure of Investment Contract Liabilities [line items]
Investment contract liabilities reinsured	52	76
Investment contract liabilities	$ 2,566	$ 2,690

X

- Definition

The amount of liabilities relating to investment contracts that fall within the scope of IAS 39 or IFRS 9.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2021-01-01
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- Definition

The amount of reinsurance contracts held that are liabilities. [Refer: Liabilities; Reinsurance contracts held [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2023-01-01
-Name IFRS
-Number 17
-IssueDate 2021-01-01
-Paragraph 78
-Subparagraph d
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-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2023-01-01
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-IssueDate 2021-01-01
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_ma&doctype=Standard
-URIDate 2021-03-24

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- Definition

Disclosure of Investment Contract Liabilities [line items]

+ References

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