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INVENTORIES (Tables)
 6 Months Ended
Jun. 30, 2012
Inventory Disclosure [Abstract]  
Inventories Table
Inventories consisted of the following:
 
June 30,
2012
 
December 31,
2011
 
June 30,
2011
 
($ in millions)
Supplies
$
36.6

 
$
35.0

 
$
33.1

Raw materials
79.2

 
75.7

 
68.1

Work in process
35.7

 
31.9

 
30.9

Finished goods
120.8

 
111.7

 
116.4

 
272.3

 
254.3

 
248.5

LIFO reserve
(74.7
)
 
(77.7
)
 
(66.5
)
Inventories, net
$
197.6

 
$
176.6

 
$
182.0