Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands		Jun. 30, 2024	Sep. 30, 2023
Inventory, Net [Abstract]
Raw materials		$ 168,332	$ 133,699
Work in progress		150,256	127,438
Component parts	[1]	371,247	327,522
Finished goods		93,793	74,594
Customer supplied inventory		19,198	14,543
On-hand inventory for which control has transferred to the customer		(187,845)	(159,953)
Inventory, net		$ 614,981	$ 517,843

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