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Other Assets - Schedule of Other Assets (Details) - CAD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of other assets [line items] |  |
Financial assets | $ 204.5 | $ 156.8
Other assets | 296.3 | 234.8
Less current portion - financial | 15.8 | 9.1
Less current portion - non-financial | 1.3 | 1.1
Long-term portion | 279.2 | 224.6
Investments held for self-insured liabilities |  |
Disclosure of other assets [line items] |  |
Financial assets | 204.5 | 156.8
Holdbacks on long-term contracts |  |
Disclosure of other assets [line items] |  |
Financial assets | 25.2 | 33.7
Other |  |
Disclosure of other assets [line items] |  |
Financial assets | 48.6 | 27.0
Other | $ 18.0 | $ 17.3

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