Segment Information Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	$ 133.8	$ 122.6	$ 201.4	$ 215.3
Inventory step-up	(0.5)	0.0
Restructuring and other	(6.7)	(25.0)	(7.8)	(30.6)
Intangible amortization			(16.5)	(18.4)
Pension settlement gain	12.2	0.0
Asset Impairment	(2.9)	(6.0)	(18.2)	(6.0)
(Loss) gain on sale of business	(0.1)	(0.9)	3.4	(6.2)
Loss on early extinguishment of debt	0.0	(17.1)	0.0	(17.1)
Income from continuing operations before income taxes	137.2	98.7	200.4	172.2
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	154.1	164.1	252.8	281.1
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring and other	(6.7)	(19.0)	(7.8)	(24.6)
Intangible amortization	(8.3)	(9.1)	(16.5)	(18.4)
(Loss) gain on sale of business	(0.1)	(0.9)	3.4	(6.2)
Loss on early extinguishment of debt	0.0	(17.1)	0.0	(17.1)
Corporate allocations	0.0	(2.2)	0.0	(11.0)
Net interest expense	(9.4)	(10.1)	(16.7)	(23.6)
Other expense	(1.2)	(1.0)	(2.4)	(2.0)
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Deal related costs and expenses	$ 0.0	$ 0.0	(4.2)	0.0
Inventory step-up			(2.2)	0.0
Pension settlement gain			12.2	0.0
Asset Impairment			$ (18.2)	$ (6.0)

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