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Commitments and Contingencies - Additional Information (Details) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of contingent liabilities [line items] |  |
Investment commitments outstanding | $ 15,367 | $ 15,117
Letters of credit outstanding | 271 | 466
Subordinated Debentures Due On December | The Manufacturers Life Insurance Company |  |
Disclosure of contingent liabilities [line items] |  |
Guaranteed payment of amounts on subordinated debenture | 650 |
Mature in 30 days |  |
Disclosure of contingent liabilities [line items] |  |
Investment commitments outstanding | 1,143 | 781
Less than 1 year |  |
Disclosure of contingent liabilities [line items] |  |
Investment commitments outstanding | 3,217 | 4,627
Mature after 1 year |  |
Disclosure of contingent liabilities [line items] |  |
Investment commitments outstanding | $ 11,007 | $ 9,709

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