ENVIRONMENTAL (Tables)

6 Months Ended

Jun. 30, 2020

Environmental Remediation Obligations [Abstract]

Environmental Provisions Charged (Credited) to Income [Table Text Block]

Environmental provisions charged to income, which are included in costs of goods sold, were as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
	2020		2019			2020		2019
	($ in millions)
Provisions charged to income	$	2.8	$	22.0		$	5.4	$	23.8
Recoveries for costs incurred and expensed	—		(4.8		)	—		(4.8		)
Environmental expense	$	2.8	$	17.2		$	5.4	$	19.0