Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Sep. 30, 2022
Inventory, Net [Abstract]
Raw materials		$ 133,699	$ 126,264
Work in progress		127,438	123,005
Component parts	[1]	327,522	329,962
Finished goods		74,594	70,019
Customer supplied inventory		14,543	12,442
On-hand inventory for which control has transferred to the customer		(159,953)	(147,405)
Inventory, net		$ 517,843	$ 514,287

[1] Component parts include items that can be sold separately as finished goods or included in the manufacture of other products.