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Inventories
6 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Inventories Inventories
 
The components of inventory are summarized as follows:
 
(in millions)
 
June 30, 2017
 
December 31, 2016
Finished goods
 
$
246.1

 
$
218.6

Work-in-process
 
64.7

 
51.3

Raw materials
 
161.4

 
143.4

Reserves
 
(36.2
)
 
(36.3
)
Inventories
 
$
436.0

 
$
377.0