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Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands		Sep. 30, 2025	Sep. 30, 2024
Inventory, Net [Abstract]
Raw materials		$ 192,373	$ 161,734
Work in progress		163,275	147,676
Component parts	[1]	382,650	376,456
Finished goods		102,746	91,787
Customer supplied inventory		19,640	20,563
On-hand inventory for which control has transferred to the customer		(206,076)	(189,124)
Inventory, net		$ 654,608	$ 609,092
[1] Component parts include items that can be sold separately as finished goods or included in the manufacture of other products.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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