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Capital Management - Schedule of Capital Managed (Details) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Jan. 01, 2023 | Dec. 31, 2022
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Subclassifications of assets, liabilities and equities [abstract] |  |  |  |  |  |
Current portion of long-term debt | $ 175.0 | $ 124.0 | [1] | $ 23.2 | [1] |
Non-current portion of long-term debt | 1,208.5 | 974.2 | [1] | 1,157.1 | [1] |
Long-term debt | 1,383.5 | 1,098.2 |  |  |  |
Bank indebtedness | 17.1 | 23.6 |  | 65.4 |  |
Less: cash and cash equivalents | (228.5) | (352.9) |  | (148.3) |  | $ (148.3)
Net debt | 1,172.1 | 768.9 |  |  |  |
Shareholders’ equity | 2,945.1 | 2,451.1 | [1] | $ 1,991.8 | [1] | $ 1,991.8
Total capital managed | $ 4,117.2 | $ 3,220.0 |  |  |  |
[1] | Revised for change in accounting policy (see Note 6.c)

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