Segment Information (Schedule Of Consolidated Financial Statements By Industry Segments) (Details) - USD ($)		3 Months Ended									12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs											$ 7,200,000	$ 9,800,000		$ 0
Net sales		$ 680,600,000	$ 669,900,000	$ 711,200,000	$ 678,800,000	$ 730,700,000		$ 727,400,000	$ 750,100,000	$ 716,800,000	2,740,500,000	2,925,000,000		2,595,300,000
Operating profit from continuing operations		103,500,000	$ 93,200,000	$ 90,200,000	$ 86,000,000	89,600,000		47,700,000	97,600,000	$ 81,400,000	372,900,000	316,300,000		347,900,000
Interest income											1,900,000	1,700,000		1,900,000
Interest expense											(37,600,000)	(39,200,000)		(26,500,000)
Miscellaneous income											(700,000)	2,400,000		2,700,000
Income before income taxes											336,500,000	281,200,000		326,000,000
Assets		3,341,600,000				3,450,800,000					3,341,600,000	3,450,800,000		3,559,600,000
Goodwill		1,167,900,000				1,191,300,000					1,167,900,000	1,191,300,000		1,249,300,000
Capital expenditures											39,600,000	43,700,000		29,500,000
Depreciation and amortization											67,000,000	75,800,000		54,800,000
Restructuring charges											7,800,000	29,200,000		0
Acquisition related costs														22,800,000
Environmental provision											0	55,800,000		0
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax											1,600,000
Gains (Losses) on Sales of Other Real Estate						3,500,000		700,000	$ 1,100,000		1,000,000
Corporate Before Environmental Charges [Member]
Segment Reporting Information [Line Items]
Operating profit from continuing operations	[1]										(47,500,000)	(53,600,000)		(76,100,000)
Corporate expense - environmental charges [Member]
Segment Reporting Information [Line Items]
Operating profit from continuing operations	[2]										0	(55,800,000)		0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating profit from continuing operations											420,300,000	425,700,000		424,000,000
Assets		2,853,000,000				2,914,500,000					2,853,000,000	2,914,500,000		3,124,000,000
Capital expenditures											39,300,000	43,100,000		29,300,000
Depreciation and amortization											64,600,000	73,800,000		52,500,000
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Assets		$ 488,600,000				$ 536,300,000	[3]				488,600,000	536,300,000	[3]	435,600,000	[3]
Capital expenditures											300,000	600,000		200,000
Depreciation and amortization											2,400,000	$ 2,000,000		$ 2,300,000
Environmental Claims For Site In Goodyear Arizona [Member] | Corporation [Member]
Segment Reporting Information [Line Items]
Loss Contingency, Damages Paid, Value											6,500,000
Environmental provision								49,000,000			49,000,000
Environmental Claims For Site In Roseland New Jersey [Member] | Corporation [Member]
Segment Reporting Information [Line Items]
Environmental provision								$ 6,800,000			$ 6,800,000

[1] Includes $6.5 million for a settlement lawsuit recorded in 2014

[2] Includes a $49.0 million charge related to an increase in the Company's liability expected at the Goodyear Site and a $6.8 million charge for expected remediation costs associated with a previously disclosed environmental site in Roseland, New Jersey in 2014.

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