Commitments and Contingencies (Schedule Of Activity Related To Asbestos Claim) (Detail) - Asbestos Commitments and Contingencies - claim	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Loss Contingencies [Line Items]
Beginning claims	29,788	29,138	28,927	29,138	29,056
New claims	795	2,620	707	2,300	1,965
Settlements	(305)	(885)	(152)	(641)	(581)
Dismissals	(352)	(1,653)	(174)	(871)	(1,132)
Ending claims	29,926		29,308	29,926	29,308