Total Invested Assets and Related Net Investment Income - Changes in Asset Fair Value and Currency Change (Details) - CAD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		$ (27,922)
Fair value changes on investment properties	$ (486)	667
Foreign exchange gains (losses)		573
Realized gains (losses) on property and equipment		100
Fair value and foreign currency changes on assets and liabilities		(26,582)
Wellesley Office
Disclosure of fair value measurement of assets [line items]
Realized gains (losses) on property and equipment		100
Other liabilities – obligations for securities borrowing
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		15
Cash, cash equivalents and short-term securities
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		4
Debt securities
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		(15,846)
Equity securities
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		(1,167)
Mortgages and loans
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		(8,909)
Derivative investments
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		(2,148)
Other financial invested assets
Disclosure of fair value measurement of assets [line items]
Total change in fair value of assets and liabilities recognized in income		$ 129

The increase (decrease) in the fair value of a financial asset (or group of financial assets) designated as measured at fair value through profit or loss that is attributable to changes in the credit risk of that asset determined either: (a) as the amount of change in its fair value that is not attributable to changes in market conditions that give rise to market risk ; or (b) using an alternative method the entity believes more faithfully represents the amount of change in its fair value that is attributable to changes in the credit risk of the asset. [Refer: Credit risk [member]; Financial assets]

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-Name IFRS
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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.

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- Definition

The gains (losses) on disposals of property, plant and equipment. [Refer: Property, plant and equipment]

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The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]]

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Increase (Decrease) In Asset Fair Value, Investment Property

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