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Long-Term Debt - Additional Information (Details)
£ in Millions, $ in Millions, $ in Millions
 12 Months Ended
Oct. 29, 2021
CAD ($)
tranche
Dec. 31, 2023
CAD ($)
Dec. 31, 2022
CAD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
AUD ($)
Jun. 27, 2023
CAD ($)
Jun. 16, 2023
GBP (£)
Dec. 31, 2022
USD ($)
Dec. 23, 2022
GBP (£)
Oct. 08, 2020
CAD ($)
Disclosure of detailed information about borrowings [line items]                    
Borrowings, interest rate   6.78% 6.09% 6.78% 6.78%     6.09%    
Number of tranches | tranche 2                  
Additional revolving credit facilities amount $ 600,000,000                  
Letter of credit outstanding   $ 2,400,000 $ 2,600,000              
Bank indebtedness   23,600,000 65,400,000              
Letter of credit issued and outstanding in addition   57,000,000.0 66,900,000              
Expire before 2022                    
Disclosure of detailed information about borrowings [line items]                    
Letter of credit issued and outstanding in addition   41,600,000 54,600,000              
Open-ended terms                    
Disclosure of detailed information about borrowings [line items]                    
Letter of credit issued and outstanding in addition   15,400,000 12,300,000              
Senior unsecured notes                    
Disclosure of detailed information about borrowings [line items]                    
Notional amount           $ 250,000,000       $ 300,000,000
Borrowings, interest rate           5.393%       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   718,100,000 223,600,000              
Revolving credit facility | Canadian Dollars                    
Disclosure of detailed information about borrowings [line items]                    
Payable amount     376,000,000.0              
Revolving credit facility | US dollars                    
Disclosure of detailed information about borrowings [line items]                    
Payable amount   $ 79,500,000 $ 157,000,000.0 $ 60.0       $ 116.0    
Term loan facilities                    
Disclosure of detailed information about borrowings [line items]                    
Revolving credit facilities amount $ 310,000,000                  
Unsecured bilateral                    
Disclosure of detailed information about borrowings [line items]                    
Revolving credit facilities amount | £             £ 100      
Unsecured multicurrency facility                    
Disclosure of detailed information about borrowings [line items]                    
Borrowings, interest rate   6.59% 5.18% 6.59% 6.59%     5.18%    
Revolving credit facilities amount | £                 £ 20  
Payable amount   $ 23,600,000 $ 24,600,000              
Overdraft facility                    
Disclosure of detailed information about borrowings [line items]                    
Revolving credit facilities amount         $ 5          
Syndicated senior credit facilities | Canadian Dollars                    
Disclosure of detailed information about borrowings [line items]                    
Bank indebtedness   0 40,800,000              
Notes payable                    
Disclosure of detailed information about borrowings [line items]                    
Aggregate maturity value of notes   $ 84,300,000 $ 62,800,000              
Notes payable | Weighted average                    
Disclosure of detailed information about borrowings [line items]                    
Borrowings, interest rate   3.90% 1.60% 3.90% 3.90%     1.60%    
Software financing obligations                    
Disclosure of detailed information about borrowings [line items]                    
Borrowings, interest rate   5.94% 5.94% 5.94% 5.94%     5.94%    
Software additions acquired through software financing obligations   $ 600,000 $ 19,300,000              
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   16,600,000 27,100,000              
Surety facilities expiring before September 2026                    
Disclosure of detailed information about borrowings [line items]                    
Bonds issued under surety facilities   $ 20,300,000 $ 18,800,000