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Invested Assets and Investment Income - Additional Information (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of fair value measurement of assets [Line Items] |  |
Fair value of securitized assets | $ 848,941 | $ 917,643
Fair value of securitized liabilities | 792,562 | 858,774
Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period | 0 | 5
Segregated funds [Member] |  |
Disclosure of fair value measurement of assets [Line Items] |  |
Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period | 0 | 5
Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period | 0 | 249
Other invested assets [Member] |  |
Disclosure of fair value measurement of assets [Line Items] |  |
Profit (loss) from associates and joint ventures | 851 | 1,300
Dividends received from associates and joint ventures | 0 | 2
Securitized assets [Member] | Fair value [Member] |  |
Disclosure of fair value measurement of assets [Line Items] |  |
Fair value of securitized assets | 5,167 | 4,725
Fair value of securitized liabilities | $ 4,865 | $ 4,601

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