Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Sep. 30, 2021
Inventory Net [Abstract]
Raw materials		$ 124,287	$ 107,412
Work in progress		125,054	95,846
Component parts	[1]	296,133	260,244
Finished goods		77,295	63,109
Customer supplied inventory		13,654	14,169
On-hand inventory for which control has transferred to the customer		(151,490)	(120,809)
Inventory, net		$ 484,933	$ 419,971

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