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Pensions and Other Benefits
 3 Months Ended
Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Pensions and Other Benefits
Pension and other benefits

In the three months ended March 31, 2016, the Company made contributions of $20 million (three months ended March 31, 2015 - $21 million) to its defined benefit pension plans. 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)
2016
 
2015
 
2016
 
2015
Current service cost (benefits earned by employees in the period)
$
27

 
$
32

 
$
3

 
$
3

Interest cost on benefit obligation
117

 
115

 
5

 
5

Expected return on fund assets
(212
)
 
(201
)
 
—

 
—

Recognized net actuarial loss
48

 
66

 
1

 
1

Amortization of prior service costs
(2
)
 
(1
)
 
—

 
—

Net periodic benefit (recovery) cost
$
(22
)
 
$
11

 
$
9

 
$
9