ENVIRONMENTAL (Tables)

12 Months Ended

Dec. 31, 2017

Environmental Remediation Obligations [Abstract]

Rollforward of environmental liabilities

Our liabilities for future environmental expenditures were as follows:

	December 31,
	2017			2016
	($ in millions)
Beginning balance	$	137.3		$	138.1
Charges to income	10.3			9.2
Remedial and investigatory spending	(16.5		)	(10.3		)
Currency translation adjustments	0.5			0.3
Ending balance	$	131.6		$	137.3

Environmental Provisions Charged to Income Table

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

	Years ended December 31,
	2017			2016		2015
	($ in millions)
Charges to income	$	10.3		$	9.2	$	15.7
Recoveries from third parties of costs incurred and expensed	(1.8		)	—		—
Environmental expense	$	8.5		$	9.2	$	15.7