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Segment Information (Summary of Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |
Total net sales | $ 786,730 | $ 618,619
Interest expense, net | (9,963) | (10,776)
Consolidated earnings before income taxes | 109,720 | 31,749
Aerospace [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 460,756 | 395,685
Industrial [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 325,974 | 222,934
Operating Segments [Member] | Aerospace [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 460,756 | 395,685
Segment earnings (loss) | 79,002 | 55,434
Operating Segments [Member] | Industrial [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 325,974 | 222,934
Segment earnings (loss) | 66,881 | 11,402
Unallocated Corporate [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment earnings (loss) | $ (26,200) | $ (24,311)

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