Goodwill (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 791,468	$ 772,559
Effects of Foreign Currency Translation	15,175	18,909
Goodwill, Ending Balance	806,643	791,468
Aerospace [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	455,423	455,423
Goodwill, Ending Balance	455,423	455,423
Industrial [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	336,045	317,136
Effects of Foreign Currency Translation	15,175	18,909
Goodwill, Ending Balance	$ 351,220	$ 336,045