XML 192 R115.htm IDEA: XBRL DOCUMENT v3.20.4
Debt due within one year - Schedule of Debt Due Within One Year (Details)
$ in Millions, $ in Millions
Dec. 31, 2020
CAD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CAD ($)
Dec. 31, 2019
USD ($)
Disclosure of detailed information about borrowings [line items]        
Current portion of non-current borrowings $ 975   $ 837  
Total debt due within one year $ 2,417   3,881  
Notes payable | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 0.24% 0.24%    
Loans secured by trade receivables | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 1.10% 1.10%    
Long-term debt due within one year | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 5.52% 5.52%    
Gross carrying amount | Notes payable        
Disclosure of detailed information about borrowings [line items]        
Current borrowings $ 392   1,994  
Gross carrying amount | Loans secured by trade receivables        
Disclosure of detailed information about borrowings [line items]        
Current borrowings 1,050   1,050  
Gross carrying amount | Long-term debt due within one year        
Disclosure of detailed information about borrowings [line items]        
Current portion of non-current borrowings 975   837  
Gross carrying amount | Commercial Paper        
Disclosure of detailed information about borrowings [line items]        
Current borrowings 349 $ 274 1,951 $ 1,502
Gross carrying amount | Finance Leases        
Disclosure of detailed information about borrowings [line items]        
Current portion of non-current borrowings $ 754   $ 775