Pension and Other Benefits (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Net Periodic Benefit Cost for Defined Benefit Pension Plans and Other Benefits

Net periodic benefit costs for defined benefit pension plans and other benefits included the following components:

	For the three months ended March 31
	Pensions				Other benefits
(in millions of Canadian dollars)	2021		2020		2021		2020
Current service cost (benefits earned by employees)	$	43	$	35	$	3	$	3
Other components of net periodic benefit (recovery) cost:
Interest cost on benefit obligation	88		102		4		5
Expected return on fund assets	(240)		(237)		—		—
Recognized net actuarial loss	52		44		1		1
Total other components of net periodic benefit (recovery) cost	(100)		(91)		5		6
Net periodic benefit (recovery) cost	$	(57)	$	(56)	$	8	$	9