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ENVIRONMENTAL (Tables)
 6 Months Ended
Jun. 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
June 30,
 
Six Months Ended
June 30,
 
2012
 
2011
 
2012
 
2011
 
($ in millions)
Charges to income
$
0.3

 
$
7.9

 
$
3.2

 
$
9.9

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

 
(9.0
)
 
(0.1
)
 
(9.5
)
Total environmental expense (income)
$
0.3

 
$
(1.1
)
 
$
3.1

 
$
0.4