Segment Information (Schedule Of Consolidated Financial Statements By Industry Segments) (Details) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016		Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs	$ 4.7	$ 0.5	$ 2.6							$ 0.0	$ 0.0		$ 7.2
Net sales	714.2	695.9	702.5	$ 673.4	$ 681.6		$ 694.2	$ 712.2	$ 660.0	2,786.0	2,748.0		2,740.5
Operating profit from continuing operations	90.9	$ 105.4	$ 109.0	$ 96.6	(91.6)		$ 103.8	$ 102.6	$ 85.5	401.9	200.3		372.9
Interest income										2.5	1.9		1.9
Interest expense										(36.1)	(36.5)		(37.6)
Miscellaneous income										(0.8)	(1.6)		(0.7)
Income before income taxes										367.5	164.1		336.5
Assets	3,593.5				3,428.0					3,593.5	3,428.0		3,336.9
Goodwill	1,206.9				1,149.2					1,206.9	1,149.2		1,167.9
Capital expenditures										49.0	51.5		39.6
Depreciation and amortization										72.7	67.4		67.0
Restructuring charges										13.0	0.0		7.8
Corporate Before Environmental Charges [Member]
Segment Reporting Information [Line Items]
Operating profit from continuing operations										(68.1)	(61.2)		(47.5)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating profit from continuing operations										470.0	453.8		420.3
Assets	2,951.1				2,815.0					2,951.1	2,815.0		2,853.0
Capital expenditures										48.7	51.2		39.3
Depreciation and amortization										71.1	62.5		64.6
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Assets	$ 642.4				$ 613.0	[1]				642.4	613.0	[1]	483.9	[1]
Capital expenditures										0.3	0.3		0.3
Depreciation and amortization										$ 1.6	$ 4.9		$ 2.4

[1] Net sales and assets by geographic region are based on the location of the business unit.