Goodwill (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 772,559	$ 805,333
Additions		8,526
Effects of Foreign Currency Translation	18,909	(41,300)
Goodwill, Ending Balance	791,468	772,559
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	317,136	349,910
Additions		8,526
Effects of Foreign Currency Translation	18,909	(41,300)
Goodwill, Ending Balance	$ 336,045	$ 317,136