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Revenue (Schedule of Revenue Recognition Time) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | $ 883,629 | $ 835,343 | $ 1,656,354 | $ 1,622,073
Aerospace [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 561,729 | 497,512 | 1,055,611 | 958,268
Industrial [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 321,900 | 337,831 | 600,743 | 663,805
Point In Time [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 401,826 | 432,403 | 748,879 | 807,536
Point In Time [Member] | Aerospace [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 223,025 | 229,171 | 415,010 | 417,674
Point In Time [Member] | Industrial [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 178,801 | 203,232 | 333,869 | 389,862
Over Time [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 481,803 | 402,940 | 907,475 | 814,537
Over Time [Member] | Aerospace [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | 338,704 | 268,341 | 640,601 | 540,594
Over Time [Member] | Industrial [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Net sales | $ 143,099 | $ 134,599 | $ 266,874 | $ 273,943

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