Commitments And Contingencies (Schedule Of Gross Settlement And Defense Costs) (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) Claim	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Payments Or Receipts For Asbestos Related Fees And Costs Net Of Insurance Recoveries	$ 63,900,000	$ 62,500,000	$ 56,000,000
Asbestos Commitments And Contingencies [Member]
Loss Contingencies [Line Items]
Asbestos Cumulative Claims Resolved | Claim	136,000
Settlement / indemnity costs incurred	$ 63,000,000	51,800,000	30,500,000
Defense costs incurred	25,800,000	36,500,000	43,000,000
Gross Settlement And Defense Incurred Costs	88,800,000	88,300,000	73,500,000
Payments For Asbestos Related Settlement And Indemnity	61,500,000	51,700,000	32,400,000
Payments For Asbestos Related Defense And Related Fees Costs	26,500,000	38,900,000	43,700,000
InsuranceInflow	(24,100,000)	(28,100,000)	(20,100,000)
Payments Or Receipts For Asbestos Related Fees And Costs Net Of Insurance Recoveries	63,900,000	62,500,000	56,000,000
Cumulative Related Settlement Cost Incurred Before Insurance Recoveries	600,000,000
Cumulative Asbestos Settlement Cost Per Resolved Claim	4,400
Asbestos Settlement Cost Per Resolved Claim	$ 11,300	$ 7,800	$ 3,900