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Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Benefit Cost
The following table sets forth the net periodic benefit cost for the Company’s defined benefit pension plans and other benefits for the three months ended March 31:
 
 
Pension Benefits
 
Other Benefits
 
 
2017
 
2016
 
2017
 
2016
Components of net periodic benefit cost
 
 
 
 
 
 
 
 
Service cost
 
$
3.6

 
$
0.9

 
$
—

 
$
—

Interest cost
 
7.9

 
6.2

 
0.1

 
0.1

Expected return on plan assets
 
(8.6
)
 
(6.7
)
 
—

 
—

Recognized net actuarial loss
 
1.4

 
1.4

 
—

 
0.1

Net periodic pension benefit cost (1)
 
$
4.3

 
$
1.8

 
$
0.1

 
$
0.2


(1) The increase in net periodic pension benefit cost is a result of the Acquisition.