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Inventories
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
Inventories
The following table summarizes the components of inventory:
 
March 31,
2018
 
December 31,
2017
Raw materials and supplies
$
109.4

 
$
97.2

Work in process
36.0

 
37.3

Finished goods
77.7

 
74.4

Total inventories, net
$
223.1

 
$
208.9


The allowance for excess and obsolete inventory balance at March 31, 2018 and December 31, 2017 was $8.7 and $8.5, respectively.