PENSION AND OTHER POSTRETIREMENT BENEFITS

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

PENSION AND OTHER POSTRETIREMENT BENEFITS

PENSION AND OTHER POSTRETIREMENT BENEFITS

	Three months ended September 30,		Nine months ended September 30,
	2020	2019	2020	2019
(millions of Canadian dollars)
Service cost	50	50	150	152
Interest cost	44	51	131	152
Expected return on plan assets	(90)	(84)	(270)	(252)
Amortization of actuarial loss and prior service costs	9	7	28	22
Net periodic benefit costs	13	24	39	74

During the nine months ended September 30, 2020, we incurred $236 million in severance costs related to our voluntary workforce reduction program. Severance costs are included in Operating and administrative expense in the Consolidated Statements of Earnings.