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Acquisitions and Divestitures (Summary of Preliminary Determination of Fair Value of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jul. 21, 2025 | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | --- | --- | ---
Assets: |  |  |  |
Goodwill | $ 832,288 |  | $ 806,643 | $ 791,468
Safran Electronics and Defense [Member] |  |  |  |
Assets: |  |  |  |
Accounts Receivable |  | $ 8,032 |  |
Inventories |  | 12,514 |  |
Other current assets |  | 3,125 |  |
Property, plant, and equipment |  | 6,945 |  |
Goodwill |  | 18,389 |  |
Other assets |  | 4,528 |  |
Total assets |  | 53,533 |  |
Liabilities: |  |  |  |
Accrued liabilities |  | 4,201 |  |
Accounts payable |  | 2,981 |  |
Income tax payable |  | 188 |  |
Other noncurrent liabilities |  | 4,485 |  |
Total liabilities |  | $ 11,855 |  |

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