Pensions and Other Benefits (Tables)

6 Months Ended

Jun. 30, 2018

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 recognized in the three and six months ended June 30, 2018 included the following components:

	For the three months ended June 30
	Pensions						Other benefits
(in millions of Canadian dollars)	2018			2017			2018		2017
Current service cost (benefits earned by employees)	$	30		$	26		$	3	$	3
Other components of net periodic benefit (recovery) cost:
Interest cost on benefit obligation	109			113			5		5
Expected return on fund assets	(238		)	(223		)	—		—
Recognized net actuarial loss	28			38			1		—
Amortization of prior service costs	—			(1		)	—		—
Total other components of net periodic benefit (recovery) cost	(101		)	(73		)	6		5
Net periodic benefit (recovery) cost	$	(71	)	$	(47	)	$	9	$	8

	For the six months ended June 30
	Pensions						Other benefits
(in millions of Canadian dollars)	2018			2017			2018		2017
Current service cost (benefits earned by employees)	$	60		$	51		$	6	$	6
Other components of net periodic benefit (recovery) cost:
Interest cost on benefit obligation	219			226			9		10
Expected return on fund assets	(477		)	(446		)	—		—
Recognized net actuarial loss	57			76			2		1
Amortization of prior service costs	(1		)	(2		)	—		—
Total other components of net periodic benefit (recovery) cost	(202		)	(146		)	11		11
Net periodic benefit (recovery) cost	$	(142	)	$	(95	)	$	17	$	17