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Inventories (Tables)
3 Months Ended
Mar. 31, 2014
Inventory Disclosure [Abstract]  
Schedule of inventories
Inventories consisted of the following:
 (in Millions)
March 31, 2014
 
December 31, 2013
Finished goods
$
355.7

 
$
283.0

Work in process
229.1

 
276.7

Raw materials, supplies and other
287.9

 
297.8

First-in, first-out inventory
$
872.7

 
$
857.5

Less: Excess of first-in, first-out cost over last-in, first-out cost
(169.9
)
 
(169.1
)
Net inventories
$
702.8

 
$
688.4