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ENVIRONMENTAL (Tables)
9 Months Ended
Sep. 30, 2022
Environmental Remediation Obligations [Abstract]  
Environmental Provisions Charged to Income [Table Text Block] Environmental provisions charged to income, which are included in costs of goods sold, were as follows:
 Three Months Ended September 30,Nine Months Ended September 30,
 2022202120222021
 ($ in millions)
Provisions charged to income$7.4 $3.6 $18.0 $10.8 
Recoveries for costs incurred and expensed— — — (2.2)
Environmental expense$7.4 $3.6 $18.0 $8.6 
Environmental expense for the nine months ended September 30, 2021 includes $2.2 million of insurance recoveries for environmental costs incurred and expensed in prior periods.