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Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Sep. 30, 2024
--- | --- | ---
Inventory, Net [Abstract] |  |  |
Raw materials |  | $ 186,797 | $ 161,734
Work in progress |  | 151,999 | 147,676
Component parts | [1] | 391,505 | 376,456
Finished goods |  | 94,717 | 91,787
Customer supplied inventory |  | 16,648 | 20,563
On-hand inventory for which control has transferred to the customer |  | (207,158) | (189,124)
Inventory, net |  | $ 634,508 | $ 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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