Segment Information (Segment Sales by Customer) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 30, 2024	Apr. 01, 2023
Segment Reporting Information
Net sales	$ 930,303	$ 836,792	$ 1,787,153	$ 1,596,895
Commercial customer
Segment Reporting Information
Net sales	495,394	433,657	956,759	813,075
U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	340,753	337,479	655,160	647,979
Other Customer
Segment Reporting Information
Net sales	94,156	65,656	175,234	135,841
Space And Defense
Segment Reporting Information
Net sales	266,787	245,853	496,915	463,638
Space And Defense | Commercial customer
Segment Reporting Information
Net sales	45,033	29,216	79,337	53,789
Space And Defense | U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	198,223	202,579	374,625	382,017
Space And Defense | Other Customer
Segment Reporting Information
Net sales	23,531	14,058	42,953	27,832
Military Aircraft
Segment Reporting Information
Net sales	202,500	182,753	388,744	360,553
Military Aircraft | U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	140,446	134,062	275,611	263,844
Military Aircraft | Other Customer
Segment Reporting Information
Net sales	62,054	48,691	113,133	96,709
Commercial Aircraft
Segment Reporting Information
Net sales	207,594	164,251	401,816	296,710
Commercial Aircraft | Commercial customer
Segment Reporting Information
Net sales	200,553	164,251	385,228	293,257
Commercial Aircraft | Other Customer
Segment Reporting Information
Net sales	7,041	0	16,588	3,453
Industrial
Segment Reporting Information
Net sales	253,422	243,935	499,678	475,994
Industrial | Commercial customer
Segment Reporting Information
Net sales	249,808	240,190	492,194	466,029
Industrial | U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	2,084	838	4,924	2,118
Industrial | Other Customer
Segment Reporting Information
Net sales	$ 1,530	$ 2,907	$ 2,560	$ 7,847