Segment Information (Segment Sales by Customer) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Segment Reporting Information
Net sales	$ 856,850	$ 760,103
Commercial customer
Segment Reporting Information
Net sales	461,365	379,421
U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	314,407	310,497
Other Customer
Segment Reporting Information
Net sales	81,078	70,185
Space And Defense
Segment Reporting Information
Net sales	230,128	217,785
Space And Defense | Commercial customer
Segment Reporting Information
Net sales	34,304	24,576
Space And Defense | U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	176,402	179,435
Space And Defense | Other Customer
Segment Reporting Information
Net sales	19,422	13,774
Military Aircraft
Segment Reporting Information
Net sales	186,244	177,800
Military Aircraft | U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	135,165	129,782
Military Aircraft | Other Customer
Segment Reporting Information
Net sales	51,079	48,018
Commercial Aircraft
Segment Reporting Information
Net sales	194,222	132,459
Commercial Aircraft | Commercial customer
Segment Reporting Information
Net sales	184,675	129,006
Commercial Aircraft | Other Customer
Segment Reporting Information
Net sales	9,547	3,453
Industrial
Segment Reporting Information
Net sales	246,256	232,059
Industrial | Commercial customer
Segment Reporting Information
Net sales	242,386	225,839
Industrial | U.S. Government customer (including OEM)
Segment Reporting Information
Net sales	2,840	1,280
Industrial | Other Customer
Segment Reporting Information
Net sales	$ 1,030	$ 4,940