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Inventories
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
Inventories are stated at the lower of cost or net realizable value, and cost is determined using FIFO. Inventories consisted of the following at March 31, 2018, and December 31, 2017:
(In millions)
March 31,
2018
 
December 31,
2017
Raw materials
$
52.1

 
$
48.8

In process
39.4

 
33.0

Finished products
138.8

 
124.7

Other
25.9

 
24.4

Total inventory
$
256.2

 
$
230.9