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IFRS 7 Disclosures - Summary of Account Balances by Investment Category (Detail) - CAD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | $ 92,085 | $ 111,037
Equity funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 42,506 | 52,528
Balanced funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 36,290 | 43,783
Bond funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 9,336 | 10,965
Money market funds [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | 1,924 | 1,844
Other fixed interest rate investments [Member] |  |
Investment Categories For Variable Contracts With Guarantees [line items] |  |
Investments for variable contracts with guarantees | $ 2,029 | $ 1,917

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