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Pensions and Other Benefits
 9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Pensions and Other Benefits
Pension and other benefits

In the three and nine months ended September 30, 2016, the Company made contributions of $4 million and $38 million, respectively (three and nine months ended September 30, 2015 - $20 million and $61 million, respectively), to its defined benefit pension plans. The elements of net periodic benefit cost for defined benefit pension plans and other benefits recognized in the three and nine months ended September 30, 2016 included the following components:

For the three months ended September 30

Pensions

Other benefits
(in millions of Canadian dollars)
2016

2015

2016

2015
Current service cost (benefits earned by employees in the period)
$
26


$
31


$
2


$
3

Interest cost on benefit obligation
117


116


6


6

Expected return on fund assets
(211
)

(201
)

—


—

Recognized net actuarial loss
48


66


1


—

Amortization of prior service costs
(2
)

(2
)

—


—

Net periodic (recovery) benefit cost
$
(22
)

$
10


$
9


$
9




For the nine months ended September 30

Pensions

Other benefits
(in millions of Canadian dollars)
2016

2015

2016

2015
Current service cost (benefits earned by employees in the period)
$
79


$
95


$
8


$
9

Interest cost on benefit obligation
350


347


16


16

Expected return on fund assets
(634
)

(614
)

—


—

Recognized net actuarial loss
143


198


3


2

Amortization of prior service costs
(5
)

(5
)

—


—

Net periodic (recovery) benefit cost
$
(67
)

$
21


$
27


$
27