Net Interest Expense (Tables)

12 Months Ended

Dec. 31, 2019

Interest Income (Expense), Net [Abstract]

Net Interest Expense

(in millions of Canadian dollars)	2019			2018			2017
Interest cost	$	471		$	475		$	491
Interest capitalized to Properties	(17		)	(20		)	(16		)
Interest expense	454			455			475
Interest income	(6		)	(2		)	(2		)
Net interest expense	$	448		$	453		$	473