Operating Segment and Geographic Information - Reconciliation of Segment Data to Financial Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Operating income	$ 45.7	$ 47.0	$ 106.0	$ 115.4
Corporate costs	(66.3)	(67.3)	(206.7)	(219.8)
Repositioning expenses	(4.4)	(3.7)	(15.6)	(5.8)
Restructuring expenses and asset impairments	(3.8)	(14.3)	(8.8)	(13.2)
Gain on termination and curtailment of pension and other postretirement plans			0.0	0.1
Net income attributable to noncontrolling interests	0.1	0.1	0.3	0.3
Income (loss) from continuing operations before income taxes	22.6	14.9	29.8	(19.7)
Loss on debt refinancing		59.8	0.0	59.8
Operating Segments
Segment Reporting Information [Line Items]
Operating income	45.7	47.0	106.0	115.4
Corporate
Segment Reporting Information [Line Items]
Corporate costs	(8.9)	(5.3)	(28.2)	(22.8)
Restructuring expenses and asset impairments	(1.6)	(0.1)	(1.5)	(0.4)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Certain pension costs	(2.0)	(2.0)	(5.9)	(5.8)
Gain on Brazil tax recoveries, net	0.9	0.0	0.9	0.0
Other costs, net	(0.1)	0.0	(3.7)	0.0
Repositioning expenses	(4.4)	(3.7)	(15.6)	(5.8)
Restructuring expenses and asset impairments	(3.8)	(14.3)	(8.8)	(13.2)
Pension MTM adjustment and other related costs, net	0.0	0.0	0.0	(0.9)
Gain on termination and curtailment of pension and other postretirement plans	0.0	0.0	0.0	0.1
Third-party and other acquisition-related costs	0.0	(0.5)	(0.1)	(2.1)
Amortization of acquired inventory fair value adjustment	0.0	0.0	0.0	(0.2)
Legacy product, environmental and other claims	0.0	0.0	(0.1)	0.0
Net income attributable to noncontrolling interests	0.1	0.1	0.3	0.3
Interest expense, net	(4.9)	(5.3)	(15.0)	(83.6)
Currency losses in Argentina	0.0	$ (1.1)	0.0	$ (1.1)
Reduction in taxes
Segment Reporting Information [Line Items]
Gain on Brazil tax recoveries, net	1.3
Gain related to income tax settlement	1.7		1.7
Legal fees and other charges related to tax settlement	$ 0.8		$ 0.8