XML 196 R119.htm IDEA: XBRL DOCUMENT v3.20.4
Long-term debt - Summary of Long-Term Debt (Details)
$ 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]        
Total long-term debt due within one year $ (975)   $ (837)  
Total long-term debt $ 23,906   22,415  
1997 trust indenture | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 3.68% 3.68%    
1976 trust indenture | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 9.54% 9.54%    
2011 trust indenture | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 4.00% 4.00%    
2016 U.S. trust indenture        
Disclosure of detailed information about borrowings [line items]        
Notional amount   $ 1,750,000,000   $ 1,750,000,000
2016 U.S. trust indenture | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 4.41% 4.41%    
1996 trust indenture (subordinated) | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 8.21% 8.21%    
Lease liabilities | Weighted Average        
Disclosure of detailed information about borrowings [line items]        
WEIGHTED AVERAGE INTEREST RATE AT DECEMBER 31, 2020 4.91% 4.91%    
Gross carrying amount        
Disclosure of detailed information about borrowings [line items]        
Total debt $ 24,970   23,300  
Gross carrying amount | 1997 trust indenture        
Disclosure of detailed information about borrowings [line items]        
Total debt 16,400   14,500  
Gross carrying amount | 1976 trust indenture        
Disclosure of detailed information about borrowings [line items]        
Total debt 1,100   1,100  
Gross carrying amount | 2011 trust indenture        
Disclosure of detailed information about borrowings [line items]        
Total debt 225   225  
Gross carrying amount | 2016 U.S. trust indenture        
Disclosure of detailed information about borrowings [line items]        
Total debt 2,228   2,273  
Gross carrying amount | 1996 trust indenture (subordinated)        
Disclosure of detailed information about borrowings [line items]        
Total debt 275   275  
Gross carrying amount | Lease liabilities        
Disclosure of detailed information about borrowings [line items]        
Total debt 4,356   4,599  
Gross carrying amount | Other        
Disclosure of detailed information about borrowings [line items]        
Total debt 386   328  
Net unamortized (discount) premium        
Disclosure of detailed information about borrowings [line items]        
Total debt 19   (15)  
Unamortized debt issuance costs        
Disclosure of detailed information about borrowings [line items]        
Total debt $ 70   $ 63