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Inventories (Tables)
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Components of Inventories
The following table summarizes the components of Inventories:
(in millions)
June 30,
2019
 
December 31,
2018
Finished goods
$
87.3

 
$
78.3

Raw materials
71.8

 
66.3

Work in process
14.4

 
12.7

Total inventories
$
173.5

 
$
157.3