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Total Invested Assets and Related Net Investment Income - Fair Values of Derivative Financial Instruments by Type of Hedge (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 CAD ($)
Interest rate risk
Disclosure of detailed information about financial instruments [line items]
Carrying amounts, assets	$ 0
Carrying amounts, liabilities	0
Accumulated amount of fair value hedge adjustment on hedged item included in carrying amount, assets	0
Accumulated amount of fair value hedge adjustment on hedged item included in carrying amount, liabilities	0
Changes in value of the hedged item	0
Change in fair value of hedging instrument	0
Net ineffectiveness on fair value hedges	0
Foreign exchange risk
Disclosure of detailed information about financial instruments [line items]
Carrying amounts, assets	37
Carrying amounts, liabilities	0
Accumulated amount of fair value hedge adjustment on hedged item included in carrying amount, assets	0
Accumulated amount of fair value hedge adjustment on hedged item included in carrying amount, liabilities	0
Changes in value of the hedged item	(2)
Change in fair value of hedging instrument	3
Net ineffectiveness on fair value hedges	$ 1

X

- Definition

The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as an asset. [Refer: Hedged items [member]]

+ References

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-IssueDate 2023-01-01
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- Definition

The accumulated amount of fair value hedge adjustment on a hedged item that is included in the carrying amount of the hedged item, recognised in the statement of financial position as a liability. [Refer: Hedged items [member]]

+ References

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- Definition

The gains (losses) on hedged items in fair value hedges, which are attributable to the hedged risk. [Refer: Fair value hedges [member]]

+ References

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-Note Expired 2023-01-01
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- Definition

The gains (losses) on hedging instruments in fair value hedges. [Refer: Fair value hedges [member]]

+ References

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-Note Expired 2023-01-01
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Gains (Losses) On Ineffectiveness Of Fair Value Hedges Recognised In Profit Or Loss

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