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Inventories
 12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
Inventories

The components of inventories at December 31 were as follows:
 
2018
 
2017
Raw materials and supplies
$
120.3

 
$
133.0

Work in process
26.2

 
27.6

Finished products
74.6

 
82.4

Inventory reserves
(30.3
)
 
(38.1
)
 
$
190.8

 
$
204.9