Commitments And Contingencies (Schedule Of Gross Settlement And Defense Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Payments Or Receipts For Asbestos Related Fees And Costs Net Of Insurance Recoveries	$ 62.5	$ 56.0	$ 49.9
Asbestos Commitments And Contingencies [Member]
Loss Contingencies [Line Items]
Settlement / indemnity costs incurred	51.8	30.5	27.7
Defense costs incurred	36.5	43.0	41.7
Gross Settlement And Defense Incurred Costs	88.3	73.5	69.4
Payments For Asbestos Related Settlement And Indemnity	51.7	32.4	24.5
Payments For Asbestos Related Defense And Related Fees Costs	38.9	43.7	43.5
InsuranceInflow	(28.1)	(20.1)	(18.1)
Payments Or Receipts For Asbestos Related Fees And Costs Net Of Insurance Recoveries	$ 62.5	$ 56.0	$ 49.9