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Inventories (Tables)
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventories
The components of inventory are as follows:
 
September 30, 2019
 
December 31, 2018
Raw materials and supplies
$
69.0

 
$
51.8

Work-in-process
106.6

 
103.2

Finished goods
54.6

 
50.8

Total inventories
$
230.2

 
$
205.8