Segments (Segment Sales By Market Type) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2025	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024
Segment Reporting Information
Net sales	$ 971,363	$ 904,735	$ 2,816,518	$ 2,691,888
Space And Defense
Segment Reporting Information
Net sales	287,705	258,409	805,673	755,324
Space And Defense | Space
Segment Reporting Information
Net sales	118,664	108,965	348,869	322,272
Space And Defense | Defense
Segment Reporting Information
Net sales	169,041	149,444	456,804	433,052
Military Aircraft
Segment Reporting Information
Net sales	224,662	207,177	651,931	595,921
Military Aircraft | Original Equipment Manufacturers
Segment Reporting Information
Net sales	177,110	160,691	508,483	455,673
Military Aircraft | Aftermarket
Segment Reporting Information
Net sales	47,552	46,486	143,448	140,248
Commercial Aircraft
Segment Reporting Information
Net sales	219,436	189,365	656,740	591,181
Commercial Aircraft | Original Equipment Manufacturers
Segment Reporting Information
Net sales	133,604	132,374	410,329	402,357
Commercial Aircraft | Aftermarket
Segment Reporting Information
Net sales	85,832	56,991	246,411	188,824
Industrial
Segment Reporting Information
Net sales	239,560	249,784	702,174	749,462
Industrial | Energy
Segment Reporting Information
Net sales	34,481	37,168	101,699	104,442
Industrial | Industrial Automation
Segment Reporting Information
Net sales	106,168	109,100	297,345	341,474
Industrial | Simulation and Test
Segment Reporting Information
Net sales	36,289	40,019	106,598	115,577
Industrial | Medical
Segment Reporting Information
Net sales	$ 62,622	$ 63,497	$ 196,532	$ 187,969