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Investment Contract Liabilities - Summary of Movement in Investment Contract Liabilities Measured at Fair Value (Detail) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of Investment Contract Liabilities [line items]
Beginning balance	$ 3,117
Ending balance	3,248	$ 3,117
Fair value [Member]
Disclosure of Investment Contract Liabilities [line items]
Beginning balance	802	932
New policies	93	54
Changes in market conditions	(39)	(38)
Redemptions, surrenders and maturities	(106)	(138)
Impact of changes in foreign exchange rates	46	(8)
Ending balance	$ 796	$ 802

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- 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
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

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- Definition

Disclosure of Investment Contract Liabilities [line items]

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- Definition

Increase decrease in Investment contracts liabilities due to changes in market conditions.

+ References

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- Definition

Increase decrease in investment contracts liabilities due to impact of changes in foreign exchange rates.

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- Definition

Increase decrease in Investment contracts liabilities due to new policies.

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- Definition

Increase decrease in Investment contracts liabilities due to redemptions, surrenders and maturities.

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