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Inventories (Tables)
6 Months Ended
Jun. 28, 2019
Inventory, Net [Abstract]  
Schedule of Inventories
Inventories were comprised of the following at the end of the respective period: 
 
June 28,
2019
 
December 28,
2018
Raw materials and supplies
$
63.8

 
$
69.2

Work in process
177.3

 
167.6

Finished goods
96.3

 
85.5

 
$
337.4

 
$
322.3