GOODWILL AND OTHER INTANGIBLE ASSETS (Schedule Of Changes In The Carrying Amount Of Goodwill Attributable To Business Segment) (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2019 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 381,652
Foreign currency translation	(400)
Goodwill, Ending Balance	381,304
Filtration [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	73,700
Foreign currency translation	0
Goodwill, Ending Balance	73,700
Test [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	34,100
Foreign currency translation	0
Goodwill, Ending Balance	34,100
Utility Solutions [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	254,100
Foreign currency translation	0
Goodwill, Ending Balance	254,100
Packaging [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	19,800
Foreign currency translation	(400)
Goodwill, Ending Balance	$ 19,400