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Long-Term Debt - Additional Information (Details)
£ in Millions, $ in Millions
 12 Months Ended
Oct. 29, 2021
CAD ($)
tranche
Dec. 31, 2022
CAD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
GBP (£)
Dec. 23, 2022
GBP (£)
Dec. 31, 2021
USD ($)
Oct. 08, 2020
CAD ($)
Disclosure of detailed information about borrowings [line items]                
Borrowings, interest rate   6.09% 2.15% 6.09% 6.09%   2.15%  
Number of tranches | tranche 2              
Additional revolving credit facilities amount $ 600,000,000              
Letter of credit outstanding   $ 2,600,000 $ 5,800,000          
Bank indebtedness   65,400,000 7,200,000          
Letter of credit issued and outstanding in addition   66,900,000 76,500,000          
Expire before 2022                
Disclosure of detailed information about borrowings [line items]                
Letter of credit issued and outstanding in addition   54,600,000 63,700,000          
Open-ended terms                
Disclosure of detailed information about borrowings [line items]                
Letter of credit issued and outstanding in addition   12,300,000 12,800,000          
Senior unsecured notes                
Disclosure of detailed information about borrowings [line items]                
Notional amount               $ 300,000,000
Borrowings, interest rate               2.048%
Revolving credit facility                
Disclosure of detailed information about borrowings [line items]                
Revolving credit facilities amount 800,000,000 800,000,000            
Amount available under the facility   223,600,000 243,700,000          
Revolving credit facility | Canadian Dollars                
Disclosure of detailed information about borrowings [line items]                
Payable amount   376,000,000.0 403,000,000.0          
Revolving credit facility | US Dollars                
Disclosure of detailed information about borrowings [line items]                
Payable amount   $ 157,000,000.0 140,300,000 $ 116.0     $ 111.0  
Term loan                
Disclosure of detailed information about borrowings [line items]                
Revolving credit facilities amount 310,000,000              
Term Loan Tranche A | Canadian Dollars                
Disclosure of detailed information about borrowings [line items]                
Revolving credit facility payable 150,000,000              
Term Loan Tranche B | Canadian Dollars                
Disclosure of detailed information about borrowings [line items]                
Revolving credit facility payable $ 160,000,000              
Unsecured multicurrency facility                
Disclosure of detailed information about borrowings [line items]                
Borrowings, interest rate   5.18%   5.18% 5.18%      
Revolving credit facilities amount | £           £ 20.0    
Payable amount   $ 24,600,000     £ 15.0      
Syndicated senior credit facilities | Canadian Dollars                
Disclosure of detailed information about borrowings [line items]                
Bank indebtedness   12,700,000 0          
Syndicated senior credit facilities | US Dollars                
Disclosure of detailed information about borrowings [line items]                
Bank indebtedness   28,100,000 7,200,000 $ 20.7     $ 5.7  
Notes payable                
Disclosure of detailed information about borrowings [line items]                
Aggregate maturity value of notes   $ 62,800,000 $ 65,300,000          
Notes payable | Weighted average                
Disclosure of detailed information about borrowings [line items]                
Borrowings, interest rate   1.60% 1.50% 1.60% 1.60%   1.50%  
Software financing obligations                
Disclosure of detailed information about borrowings [line items]                
Borrowings, interest rate   5.94% 4.69% 5.94% 5.94%   4.69%  
Software additions acquired through software financing obligations   $ 19,300,000 $ 44,400,000          
Letter of credit                
Disclosure of detailed information about borrowings [line items]                
Revolving credit facilities amount   100,000,000            
Surety facilities                
Disclosure of detailed information about borrowings [line items]                
Bonds issued under surety facilities   27,100,000 65,500,000 $ 20.0     $ 51.8  
Surety facilities expiring before September 2026                
Disclosure of detailed information about borrowings [line items]                
Bonds issued under surety facilities   $ 18,800,000 $ 10,100,000