Segment Information Reconciliation of Operating Profit (Losee) from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	$ 192.2	$ 182.8	$ 543.4	$ 538.9
Restructuring and other	(4.9)	(7.3)	(38.6)	(19.9)
Intangible amortization	(24.6)	(24.1)	(73.2)	(72.6)
Loss on sale of business	(3.8)	0.0	(3.8)	0.0
Loss of early extinguishment of debt	0.0	0.0	(101.4)	0.0
Income from continuing operations before income taxes	174.8	149.7	364.9	435.7
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	231.9	216.2	670.6	635.1
Segment Reconciling Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring and other	(4.9)	(8.1)	(43.2)	(20.9)
Intangible amortization	(24.6)	(24.1)	(73.2)	(72.6)
Loss on sale of business	(3.8)	0.0	(3.8)	0.0
Loss of early extinguishment of debt	0.0	0.0	(101.4)	0.0
Separation costs	(9.9)	0.0	(9.9)	0.0
Net interest expense	$ (13.9)	$ (34.3)	$ (74.2)	$ (105.9)