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v3.26.1

Segment Information (Summary of Consolidated Net Sales and Segment Operating Profit by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2026 | Mar. 31, 2025
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | $ 1,090,568 | $ 883,629 | $ 2,087,022 | $ 1,656,354
Cost of goods sold |  | 774,660 | 643,530 | 1,478,953 | 1,226,621
Selling, general and administrative expenses |  | 102,285 | 83,842 | 197,270 | 153,538
Research and development costs |  | 46,119 | 37,230 | 83,875 | 67,437
Aerospace [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 703,321 | 561,729 | 1,338,218 | 1,055,611
Industrial [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 387,247 | 321,900 | 748,804 | 600,743
Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 1,090,568 | 883,629 | 2,087,022 | 1,656,354
Cost of goods sold |  | 774,330 | 642,767 | 1,478,291 | 1,225,438
Selling, general and administrative expenses |  | 67,400 | 49,303 | 126,808 | 88,882
Research and development costs |  | 44,322 | 35,595 | 80,612 | 64,489
Other segment items | [1] | (19,280) | (14,619) | (37,874) | (27,960)
Reportable segment operating profit |  | 223,796 | 170,583 | 439,185 | 305,505
Operating Segments [Member] | Aerospace [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 703,321 | 561,729 | 1,338,218 | 1,055,611
Cost of goods sold |  | 506,058 | 407,063 | 959,858 | 782,815
Selling, general and administrative expenses |  | 27,912 | 22,490 | 56,531 | 40,965
Research and development costs |  | 29,416 | 21,223 | 51,434 | 38,851
Other segment items | [1] | (18,140) | (13,663) | (36,075) | (26,361)
Reportable segment operating profit |  | 158,075 | 124,616 | 306,470 | 219,341
Operating Segments [Member] | Industrial [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 387,247 | 321,900 | 748,804 | 600,743
Cost of goods sold |  | 268,272 | 235,704 | 518,433 | 442,623
Selling, general and administrative expenses |  | 39,488 | 26,813 | 70,277 | 47,917
Research and development costs |  | 14,906 | 14,372 | 29,178 | 25,638
Other segment items | [1] | (1,140) | (956) | (1,799) | (1,599)
Reportable segment operating profit |  | $ 65,721 | $ 45,967 | $ 132,715 | $ 86,164
[1] | Other segment items mainly includes our equity interest in the earnings of the JV, other components of net periodic pension and other postretirement benefit, excluding service cost and interest expense, and net gain/loss on sales of assets and businesses.

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