Leases (Lease-Related Expenses) (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Operating lease expense		$ 6,213	$ 6,335	$ 6,559
Amortization of financing lease assets		914	454	425
Interest on financing lease liabilities		157	51	58
Variable lease expense		917	929	1,495
Short-term lease expense		196	190	283
Sublease income	[1]		(192)	(680)
Total lease expense		$ 8,397	$ 7,767	$ 8,140

[1] Relates to two separate subleases Woodward has entered into for a leased manufacturing building in Niles, Illinois, each of which expired during fiscal year 2022.