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Inventories (Tables)
9 Months Ended
Sep. 28, 2018
Inventory, Net [Abstract]  
Schedule of Inventories Inventories were comprised of the following at the end of each period: 
 
September 28,
2018
 
December 29,
2017
Raw materials and supplies
$
22.0

 
$
23.7

Work in process
91.3

 
61.1

Finished goods
30.1

 
43.9

 
$
143.4

 
$
128.7