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Long-Term Debt - Summary of Long Term Debt (Detail) - CAD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]    
Borrowings $ 860.9 $ 933.7
Less current portion 46.9 48.5
Long-term portion 814.0 885.2
Notes payable [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 88.7 76.8
Revolving credit facilities [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 448.0 528.6
Term loan [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings 308.5 308.8
Software financing obligations [member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings $ 15.7 $ 19.5