Segment Information (Segment Sales By Market Type) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Segment Reporting Information
Net sales	$ 683,954	$ 754,843
Aircraft Controls
Segment Reporting Information
Net sales	286,774	339,954
Aircraft Controls | Military
Segment Reporting Information
Net sales	205,698	173,694
Aircraft Controls | Commercial
Segment Reporting Information
Net sales	81,076	166,260
Space And Defense Controls
Segment Reporting Information
Net sales	188,162	186,240
Space And Defense Controls | Space
Segment Reporting Information
Net sales	77,811	62,740
Space And Defense Controls | Defense
Segment Reporting Information
Net sales	110,351	123,500
Industrial Systems
Segment Reporting Information
Net sales	209,018	228,649
Industrial Systems | Energy
Segment Reporting Information
Net sales	28,644	29,939
Industrial Systems | Industrial Automation
Segment Reporting Information
Net sales	95,231	106,831
Industrial Systems | Simulation and Test
Segment Reporting Information
Net sales	20,126	28,468
Industrial Systems | Medical
Segment Reporting Information
Net sales	$ 65,017	$ 63,411