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Employee Retirement Plans (Tables)
 6 Months Ended
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Benefit Costs
The components of net pension income for the three and six months ended June 30, 2016 and 2015, were as follows:

 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
Interest cost
$
(5.2
)
 
$
(6.7
)
 
$
(10.3
)
 
$
(13.4
)
Expected return on plan assets
7.9

 
8.7

 
15.8

 
17.4

Net pension income
$
2.7

 
$
2.0

 
$
5.5

 
$
4.0
Schedule of Defined Benefit Plans Disclosures
The Company made the following contributions and benefit payments to its defined benefit pension plans during the six months ended June 30, 2016:

 
Six Months Ended
 
June 30, 2016
Contributions on qualified pension plans
$
0.3

Benefit payments on non-qualified pension plans
1.0

Total
$
1.3