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Other Assets - Schedule of Disclosure of the Bond Portfolio Stated at Fair Value (Details) - Bonds - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |
Maturity of bond portfolio, stated at fair value | $ 122.7 | $ 127.2
Within one year |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |
Maturity of bond portfolio, stated at fair value | 6.0 | 0.4
After one year but not more than five years |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |
Maturity of bond portfolio, stated at fair value | 37.5 | 43.1
More than five years |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |
Maturity of bond portfolio, stated at fair value | $ 79.2 | $ 83.7

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