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INVENTORIES (Tables)
 6 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Inventories Table
Inventories consisted of the following:
 
June 30,
2013
 
December 31,
2012
 
June 30,
2012
 
($ in millions)
Supplies
$
40.8

 
$
36.4

 
$
36.6

Raw materials
73.1

 
70.5

 
79.2

Work in process
28.5

 
25.2

 
35.7

Finished goods
141.6

 
141.0

 
120.8

 
284.0

 
273.1

 
272.3

LIFO reserve
(79.2
)
 
(78.0
)
 
(74.7
)
Inventories, net
$
204.8

 
$
195.1

 
$
197.6