Pensions and Other Benefits (Tables)

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

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

The elements of net periodic benefit cost for defined benefit pension plans and other benefits recognized in the quarter included the following components:

	For the three months ended March 31
	Pensions						Other benefits
(in millions of Canadian dollars)	2017			2016			2017		2016
Current service cost (benefits earned by employees in the period)	$	25		$	27		$	3	$	3
Interest cost on benefit obligation	113			117			5		5
Expected return on fund assets	(223		)	(212		)	—		—
Recognized net actuarial loss	38			48			1		1
Amortization of prior service costs	(1		)	(2		)	—		—
Net periodic benefit (recovery) cost	$	(48	)	$	(22	)	$	9	$	9