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INVENTORIES (Tables)
 9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventories Table
Inventories consisted of the following:
 
September 30,
2013
 
December 31,
2012
 
September 30,
2012
 
($ in millions)
Supplies
$
41.2

 
$
36.4

 
$
35.6

Raw materials
70.7

 
70.5

 
73.1

Work in process
28.1

 
25.2

 
33.6

Finished goods
117.3

 
141.0

 
149.9

 
257.3

 
273.1

 
292.2

LIFO reserve
(73.8
)
 
(78.0
)
 
(77.9
)
Inventories, net
$
183.5

 
$
195.1

 
$
214.3