Commitments And Contingencies (Schedule Of Gross Settlement And Defense Costs) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) Claim	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Loss Contingencies [Line Items]
Payments Or Receipts For Asbestos Related Fees And Costs Net Of Insurance Recoveries	$ 56,000,000	$ 49,900,000		$ 61,300,000
Asbestos Commitments And Contingencies [Member]
Loss Contingencies [Line Items]
Gross Settlement And Defense Incurred Costs	73,500,000	69,400,000	$ 81,100,000
Payments Or Receipts For Asbestos Related Fees And Costs Net Of Insurance Recoveries	$ 56,000,000	49,900,000	61,300,000
Asbestos Cumulative Claims Resolved | Claim	124,000
Settlement / indemnity costs incurred	$ 30,500,000	27,700,000	25,300,000
Defense costs incurred	43,000,000	41,700,000	55,900,000
InsuranceInflow	(20,100,000)	(18,100,000)	(23,800,000)
Payments For Asbestos Related Defense And Related Fees Costs	43,700,000	43,500,000	57,700,000
Payments For Asbestos Related Settlement And Indemnity	32,400,000	24,500,000	27,300,000
Cumulative Related Settlement Cost Incurred Before Insurance Recoveries	483,000,000
Cumulative Asbestos Settlement Cost Per Resolved Claim	3,900
Asbestos Settlement Cost Per Resolved Claim	$ 3,900	$ 3,100	$ 3,800