Commitments And Contingencies (Asbestos Claims Activity) (Details) - Asbestos Commitments And Contingencies [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Activity Related to Asbestos Claims [Roll Forward]
Beginning claims	36,052	41,090	47,507
New claims	2,819	2,826	2,572
Settlements	1,038	924	954
Dismissals	5,599	6,940	8,035
Ending claims	32,234	36,052	41,090