PENSION AND OTHER POSTRETIREMENT BENEFITS

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

PENSION AND OTHER POSTRETIREMENT BENEFITS

PENSION AND OTHER POSTRETIREMENT BENEFITS

	Three months ended September 30,				Nine months ended September 30,
	2018		2017		2018		2017
(millions of Canadian dollars)
Service cost	46		65		162		181
Interest cost	39		46		126		125
Expected return on plan assets	(72	)	(71	)	(234	)	(195	)
Amortization of actuarial loss	6		11		21		28
Plan curtailments	—		—		2		—
Amortization of prior service costs	—		(1	)	(1	)	(1	)
Net periodic benefit costs	19		50		76		138