XML 130 R113.htm IDEA: XBRL DOCUMENT v3.20.4
LONG-TERM DEBT - Principal Repayments (Details) - CAD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]    
Long-term debt $ 16,751 $ 15,967
Gross carrying amount    
Disclosure of detailed information about borrowings [line items]    
Long-term debt 18,373 $ 16,130
2021    
Disclosure of detailed information about borrowings [line items]    
Long-term debt 1,450  
2022    
Disclosure of detailed information about borrowings [line items]    
Long-term debt 1,555  
2023    
Disclosure of detailed information about borrowings [line items]    
Long-term debt 1,719  
2024    
Disclosure of detailed information about borrowings [line items]    
Long-term debt 600  
2025    
Disclosure of detailed information about borrowings [line items]    
Long-term debt 890  
Thereafter    
Disclosure of detailed information about borrowings [line items]    
Long-term debt $ 12,159