Pension and other benefits (Tables)

3 Months Ended

Mar. 31, 2023

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)	2023		2022		2023		2022
Current service cost (benefits earned by employees)	$	18	$	37	$	2	$	2
Other components of net periodic benefit (recovery) cost:
Interest cost on benefit obligation	121		96		5		4
Expected return on plan assets	(220)		(240)		—		—
Recognized net actuarial loss	8		38		—		1
Total other components of net periodic benefit (recovery) cost	(91)		(106)		5		5
Net periodic benefit (recovery) cost	$	(73)	$	(69)	$	7	$	7