Segments (Sales by Market Type) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Segment Reporting Information [Line Items]
Net sales	$ 2,851,993	$ 2,884,554	$ 2,904,663
Aircraft Controls
Segment Reporting Information [Line Items]
Net sales	1,161,238	1,205,750	1,302,972
Aircraft Controls | Military
Segment Reporting Information [Line Items]
Net sales	781,921	721,024	622,126
Aircraft Controls | Commercial
Segment Reporting Information [Line Items]
Net sales	379,317	484,726	680,846
Space and Defense Controls
Segment Reporting Information [Line Items]
Net sales	799,235	770,114	683,468
Space and Defense Controls | Space
Segment Reporting Information [Line Items]
Net sales	332,946	294,254	218,970
Space and Defense Controls | Defense
Segment Reporting Information [Line Items]
Net sales	466,289	475,860	464,498
Industrial Systems
Segment Reporting Information [Line Items]
Net sales	891,520	908,690	918,223
Industrial Systems | Energy
Segment Reporting Information [Line Items]
Net sales	120,173	127,693	120,771
Industrial Systems | Industrial Automation
Segment Reporting Information [Line Items]
Net sales	427,076	405,291	447,515
Industrial Systems | Simulation and Test
Segment Reporting Information [Line Items]
Net sales	89,459	102,600	122,935
Industrial Systems | Medical
Segment Reporting Information [Line Items]
Net sales	$ 254,812	$ 273,106	$ 227,002