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Pension, Profit Sharing & Other Post-Retirement Benefits (Tables)
 6 Months Ended
Jun. 27, 2015
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Benefit Costs
The Company’s net periodic benefit cost for its defined benefit plans for the second quarter and first half of 2015 and 2014 consists of the following components:

 
 
Second Quarter of
 
First Half of
 
 
2015
 
2014
 
2015
 
2014
 
 
(Dollar amounts in millions)
Service cost
 
$
0.3

 
$
0.1

 
$
0.5

 
$
0.3

Interest cost
 
1.6

 
1.9

 
3.2

 
3.8

Expected return on plan assets
 
(1.8
)
 
(1.9
)
 
(3.6
)
 
(3.8
)
Net amortization of actuarial loss
 
0.3

 
—

 
0.7

 
—

Net periodic benefit cost
 
$
0.4

 
$
0.1

 
$
0.8

 
$
0.3