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Risk Management - Summary of Account Balances by Investment Category (Detail) - CAD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | $ 93,766 | $ 92,085
Equity funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 45,593 | 42,506
Balanced funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 35,801 | 36,290
Bond funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 8,906 | 9,336
Money market funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 1,559 | 1,924
Other fixed interest rate investments [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | $ 1,907 | $ 2,029

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