ENVIRONMENTAL (Tables)
 9 Months Ended
Sep. 30, 2012
Environmental Remediation Obligations [Abstract]  
Environmental Provisions Charged (Credited) to Income Table
Environmental provisions charged (credited) to income, which are included in cost of goods sold, were as follows:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2012
 
2011
 
2012
 
2011
 
($ in millions)
Charges to income
$
3.6

 
$
4.0

 
$
6.8

 
$
13.9

Recoveries from third parties of costs incurred and expensed in prior periods
—

 
(1.5
)
 
(0.1
)
 
(11.0
)
Total environmental expense
$
3.6

 
$
2.5

 
$
6.7

 
$
2.9