Restructuring (Tables)

9 Months Ended

Sep. 30, 2018

Restructuring And Related Activities [Abstract]

Schedule of Change in Balance Sheet Position of Restructuring Reserves Related to Continuing Operations

The table below summarizes the change in the balance sheet position of the restructuring reserves related to the continuing operations (dollars in millions).

	Three months ended September 30, 2018								Three months ended September 30, 2017
	Restructuring employee-related			Restructuring Other		Total			Restructuring employee-related			Restructuring Other			Total
Reserve at beginning of the period	$	35.8		$	0.2	$	36.0		$	24.4		$	0.3		$	24.7
Provision/charge		0.5			—		0.5			21.3			—			21.3
Provision/reversal		—			—		—			(0.4	)		—			(0.4	)
Cash payments		(4.0	)		—		(4.0	)		(4.1	)		—			(4.1	)
Translation difference		0.0			—		0.0			2.3			(0.1	)		2.2
Reserve at end of the period	$	32.3		$	0.2	$	32.5		$	43.5		$	0.2		$	43.7

	Nine months ended September 30, 2018								Nine months ended September 30, 2017
	Restructuring employee-related			Restructuring Other		Total			Restructuring employee-related			Restructuring Other			Total
Reserve at beginning of the period	$	39.4		$	0.2	$	39.6		$	35.7		$	0.1		$	35.8
Provision/charge		4.8			—		4.8			24.4			0.2			24.6
Provision/reversal		—			—		—			(4.2	)		—			(4.2	)
Cash payments		(10.8	)		—		(10.8	)		(17.0	)		—			(17.0	)
Translation difference		(1.1	)		—		(1.1	)		4.6			(0.1	)		4.5
Reserve at end of the period	$	32.3		$	0.2	$	32.5		$	43.5		$	0.2		$	43.7