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PENSION PLANS (Tables)
 9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Periodic Pension Costs The following sets forth the components of the Company’s net periodic pension costs associated with these plans ($ in millions):
 
Three Months Ended
 
Nine Months Ended
 
September 30, 2016
 
October 2, 2015
 
September 30, 2016
 
October 2, 2015
Service cost
$
0.9

 
$
1.3

 
$
2.6

 
$
3.7

Interest cost
1.8

 
2.2

 
5.6

 
6.4

Expected return on plan assets
(2.0
)
 
(2.4
)
 
(6.1
)
 
(6.7
)
Amortization of net loss
1.3

 
1.8

 
4.1

 
5.2

Net periodic pension cost
$
2.0

 
$
2.9

 
$
6.2

 
$
8.6