INVENTORIES (Tables)
 9 Months Ended
Sep. 30, 2012
Inventory Disclosure [Abstract]  
Inventories Table
Inventories consisted of the following:
 
September 30,
2012
 
December 31,
2011
 
September 30,
2011
 
($ in millions)
Supplies
$
35.6

 
$
35.0

 
$
32.8

Raw materials
73.1

 
75.7

 
69.8

Work in process
33.6

 
31.9

 
32.4

Finished goods
149.3

 
111.7

 
104.9

 
291.6

 
254.3

 
239.9

LIFO reserve
(77.9
)
 
(77.7
)
 
(73.6
)
Inventories, net
$
213.7

 
$
176.6

 
$
166.3