Plant Closures and Divestitures (Tables)

9 Months Ended

Sep. 30, 2020

Discontinued Operations And Disposal Groups [Abstract]

Summary of Restructuring Activities and Related Reserves

Details of the restructuring activities and related reserves are as follows:

	Severance and employee benefits			Asset Retirement			Other			Total
(Dollars in millions)
Reserve at December 31, 2018	$	1.7		$	3.6		$	2.8		$	8.1
Accrual		0.0			3.4			3.0			6.4
Cost charged against assets		0.0			0.0			(3.0	)		(3.0	)
Reversal of accrued charges		(0.3	)		(0.1	)		0.0			(0.4	)
Cash paid		(0.5	)		(6.2	)		(0.3	)		(7.0	)
Currency translation		0.0			0.0			(0.1	)		(0.1	)
Reserve at December 31, 2019	$	0.9		$	0.7		$	2.4		$	4.0
Accrual		0.5			2.9			2.4			5.8
Cost charged against assets		0.0			0.0			(2.4	)		(2.4	)
Reversal of accrued charges		(0.3	)		0.0			0.0			(0.3	)
Cash paid		(0.1	)		(0.3	)		0.0			(0.4	)
Reserve at September 30, 2020	$	1.0		$	3.3		$	2.4		$	6.7