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Inventories
9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
2.
INVENTORIES

We state our inventories at the lower of cost or market.  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: 
 
 
September 30, 2016
 
December 31, 2015
 
 
(in millions)
 
 
 
 
 
Raw materials and work-in-progress
 
$
219.6

 
$
228.7

Finished goods
 
28.3

 
31.1

Gross inventories
 
247.9

 
259.8

Inventory valuation reserves
 
(28.5
)
 
(29.3
)
Inventories, net
 
$
219.4

 
$
230.5