XML 123 R85.htm IDEA: XBRL DOCUMENT v3.24.4
Long-term debt - Long-term debt (Details)
 1 Months Ended 12 Months Ended
Sep. 30, 2024
CAD ($)
tranche
Sep. 30, 2024
USD ($)
tranche
Dec. 31, 2023
CAD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2024
CAD ($)
tranche
Sep. 30, 2023
CAD ($)
Sep. 30, 2024
USD ($)
Disclosure of detailed information about borrowings [line items]              
Borrowings $ 2,688,308,000       $ 2,688,308,000 $ 3,100,321,000  
Current portion 999,000       999,000 1,158,971,000  
Long-term debt 2,687,309,000       2,687,309,000 1,941,350,000  
Repayments of borrowings         1,154,878,000 79,150,000  
Settled cross-currency swap agreement              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities 954,832,000       954,832,000    
2014 U.S. Senior Notes              
Disclosure of detailed information about borrowings [line items]              
Borrowings $ 0       0 473,808,000  
Number of notes | tranche 2 2          
2021 U.S. Senior Notes              
Disclosure of detailed information about borrowings [line items]              
Borrowings $ 1,342,758,000       $ 1,342,758,000 1,342,714,000  
Number of notes | tranche         2    
2021 U.S. Senior Notes | Gross carrying amount              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities 1,000,000,000       $ 1,000,000,000    
Borrowings less financing fees $ 1,351,500,000       $ 1,351,500,000    
2021 U.S. Senior Notes | Weighted average              
Disclosure of detailed information about borrowings [line items]              
Borrowings, maturity term         4 years    
Borrowings, interest rate 1.79%       1.79%   1.79%
2021 U.S. Senior Notes | Later than one year and not later than two years              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities $ 810,900,000       $ 810,900,000   $ 600,000,000
2021 U.S. Senior Notes | Beyond five years              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities 540,600,000       540,600,000   $ 400,000,000
2021 CAD Senior Notes              
Disclosure of detailed information about borrowings [line items]              
Borrowings $ 597,212,000       $ 597,212,000 596,550,000  
Borrowings, interest rate 2.10%       2.10%   2.10%
2021 CAD Senior Notes | Gross carrying amount              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities $ 600,000,000       $ 600,000,000    
Borrowings less financing fees 600,000,000       600,000,000    
2021 CAD Senior Notes | Later than three years and not later than four years              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities 600,000,000       600,000,000    
2024 CAD Senior Notes              
Disclosure of detailed information about borrowings [line items]              
Borrowings $ 746,144,000       746,144,000 0  
Number of notes | tranche 2 2          
2024 CAD Senior Notes | Gross carrying amount              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities $ 750,000,000       $ 750,000,000    
2024 CAD Senior Notes | Weighted average              
Disclosure of detailed information about borrowings [line items]              
Borrowings, maturity term 4 years 4 years          
Borrowings, interest rate 4.08%       4.08%   4.08%
2024 CAD Senior Notes | Later than two years and not later than three years              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities $ 300,000,000       $ 300,000,000    
2024 CAD Senior Notes | Later than four years and not later than five years              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities 450,000,000       450,000,000    
Unsecured committed term loan credit facility              
Disclosure of detailed information about borrowings [line items]              
Borrowings 0       0 676,886,000  
Repayments of borrowings       $ 500,000,000      
Unsecured committed term loan credit facility | Settled cross-currency swap agreement              
Disclosure of detailed information about borrowings [line items]              
Repayments of borrowings     $ 670,350,000        
Other long-term debt              
Disclosure of detailed information about borrowings [line items]              
Borrowings 2,194,000       2,194,000 $ 10,363,000  
Remaining total tranches | 2014 U.S. Senior Notes              
Disclosure of detailed information about borrowings [line items]              
Repayments of borrowings   $ 350,000,000          
Remaining total tranches | 2014 U.S. Senior Notes | Settled cross-currency swap agreement              
Disclosure of detailed information about borrowings [line items]              
Repayments of borrowings 475,825,000            
Remaining total tranches | 2014 U.S. Senior Notes | Less than one year              
Disclosure of detailed information about borrowings [line items]              
Notional amount of financial liabilities $ 473,025,000       $ 473,025,000   $ 350,000,000