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Long-Term Debt - Summary of Long Term Debt (Details) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of detailed information about borrowings [line items] |  |
Long-term debt | $ 680.8 | $ 860.9
Less current portion | 46.6 | 46.9
Long-term portion | 634.2 | 814.0
Senior unsecured notes |  |
Disclosure of detailed information about borrowings [line items] |  |
Long-term debt | 299.5 | 0.0
Revolving credit facility |  |
Disclosure of detailed information about borrowings [line items] |  |
Long-term debt | 0.0 | 448.0
Term loan |  |
Disclosure of detailed information about borrowings [line items] |  |
Long-term debt | 309.1 | 308.5
Notes payable |  |
Disclosure of detailed information about borrowings [line items] |  |
Long-term debt | 68.8 | 88.7
Software financing obligations |  |
Disclosure of detailed information about borrowings [line items] |  |
Long-term debt | $ 3.4 | $ 15.7

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