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Inventories
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
The components of inventory are as follows:
 
 
June 30, 2019
 
December 31, 2018
Raw materials and supplies
 
$
66.3

 
$
51.8

Work-in-process
 
119.1

 
103.2

Finished goods
 
46.6

 
50.8

Total inventories
 
$
232.0

 
$
205.8