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Long-term debt (Tables)
3 Months Ended
Mar. 31, 2021
Long-Term Debt
     As at
Mar 31
    As at
Dec 31
 
millions of Canadian dollars
  
2021
    2020  
Long-term debt
  
 
4,447
 
    4,447  
Finance leases
  
 
506
 
    510  
Total long-term debt
  
 
4,953
 
    4,957