v3.25.4
Debt due within one year - Schedule of Debt Due Within One Year (Details)
$ in Millions, $ in Millions
Dec. 31, 2025
CAD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CAD ($)
Dec. 31, 2024
USD ($)
Disclosure of detailed information about borrowings [line items]        
Total debt due within one year $ 6,155   $ 7,669  
Notes payable | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
Weighted average interest rate at December 31, 2025 2.40% 2.40%    
Loans        
Disclosure of detailed information about borrowings [line items]        
Current borrowings $ 1,594 $ 1,163 1,600 $ 1,112
Loans | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
Weighted average interest rate at December 31, 2025 3.29% 3.29%    
Supplier finance arrangements due within one year | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
Weighted average interest rate at December 31, 2025 4.00% 4.00%    
Long-term debt | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
Weighted average interest rate at December 31, 2025 4.10% 4.10%    
Trade receivables | Notes payable        
Disclosure of detailed information about borrowings [line items]        
Current borrowings $ 2,566   2,203  
Trade receivables | Loans        
Disclosure of detailed information about borrowings [line items]        
Current borrowings 1,594   1,600  
Trade receivables | Supplier finance arrangements due within one year        
Disclosure of detailed information about borrowings [line items]        
Current borrowings 70   73  
Trade receivables | Long-term debt        
Disclosure of detailed information about borrowings [line items]        
Current portion of non-current borrowings 1,925   3,793  
Trade receivables | Commercial paper        
Disclosure of detailed information about borrowings [line items]        
Current borrowings 2,550 $ 1,861 2,190 $ 1,522
Trade receivables | Finance leases        
Disclosure of detailed information about borrowings [line items]        
Current portion of non-current borrowings $ 933   $ 1,088