Segments (Sales by Revenue Recognition Method) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Segment Reporting Information
Net sales	$ 934,840	$ 930,303	$ 1,845,155	$ 1,787,153
Transferred over time
Segment Reporting Information
Net sales	606,864	596,458	1,194,979	1,133,262
Transferred at point in time
Segment Reporting Information
Net sales	327,976	333,845	650,176	653,891
Space And Defense
Segment Reporting Information
Net sales	270,184	266,787	517,968	496,915
Space And Defense | Transferred over time
Segment Reporting Information
Net sales	242,650	242,631	466,032	452,826
Space And Defense | Transferred at point in time
Segment Reporting Information
Net sales	27,534	24,156	51,936	44,089
Military Aircraft
Segment Reporting Information
Net sales	213,849	202,500	427,269	388,744
Military Aircraft | Transferred over time
Segment Reporting Information
Net sales	181,079	161,959	357,633	313,915
Military Aircraft | Transferred at point in time
Segment Reporting Information
Net sales	32,770	40,541	69,636	74,829
Commercial Aircraft
Segment Reporting Information
Net sales	216,381	207,594	437,304	401,816
Commercial Aircraft | Transferred over time
Segment Reporting Information
Net sales	154,862	157,107	316,074	300,010
Commercial Aircraft | Transferred at point in time
Segment Reporting Information
Net sales	61,519	50,487	121,230	101,806
Industrial
Segment Reporting Information
Net sales	234,426	253,422	462,614	499,678
Industrial | Transferred over time
Segment Reporting Information
Net sales	28,273	34,761	55,240	66,511
Industrial | Transferred at point in time
Segment Reporting Information
Net sales	$ 206,153	$ 218,661	$ 407,374	$ 433,167