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Inventories
3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

4.
INVENTORIES

We state our inventories at the lower of cost or net realizable value.  The cost of our inventories is determined using the first-in first-out method.  When we determine that our gross inventories exceed usage requirements, or if inventories become obsolete or otherwise not saleable, we record a provision for such loss as a component of our inventory accounts.

Inventories consist of the following: 
 
 
March 31, 2017
 
December 31, 2016
 
 
(in millions)
 
 
 
 
 
Raw materials and work-in-progress
 
$
220.4

 
$
212.7

Finished goods
 
28.9

 
33.8

Gross inventories
 
249.3

 
246.5

Inventory valuation reserves
 
(27.7
)
 
(27.0
)
Inventories, net
 
$
221.6

 
$
219.5