PENSION AND OTHER POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Schedule of net benefit costs recognized

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
(millions of Canadian dollars)
Service cost	58		51		100		102
Interest cost	54		50		87		101
Expected return on plan assets	(113	)	(84	)	(180	)	(168	)
Amortization of actuarial loss and prior service costs	10		8		19		15
Net periodic benefit costs	9		25		26		50