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Restructuring (Schedule of Restructuring Reserve Activity) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Restructuring Reserve
Restructuring accrual at beginning of period			$ 4,123
Charged to expense	$ 4,830	$ 0	4,830	$ 0
Adjustments to provision			(976)
Foreign currency translation			73
Restructuring accrual at end of period	6,288		6,288
2020 Plan
Restructuring Reserve
Charged to expense			4,830
Non-cash charges			(554)
Cash payments			(642)
Restructuring accrual at end of period	3,635		3,635
2018 Plan
Restructuring Reserve
Cash payments			(566)
Restructuring accrual at end of period	2,653		2,653
Aircraft Controls
Restructuring Reserve
Restructuring accrual at beginning of period			0
Adjustments to provision			0
Foreign currency translation			0
Restructuring accrual at end of period	1,967		1,967
Aircraft Controls \| 2020 Plan
Restructuring Reserve
Charged to expense			2,896
Non-cash charges			(554)
Cash payments			(375)
Aircraft Controls \| 2018 Plan
Restructuring Reserve
Cash payments			0
Space And Defense Controls
Restructuring Reserve
Restructuring accrual at beginning of period			27
Adjustments to provision			(1)
Foreign currency translation			0
Restructuring accrual at end of period	0		0
Space And Defense Controls \| 2020 Plan
Restructuring Reserve
Charged to expense			185
Non-cash charges			0
Cash payments			(185)
Space And Defense Controls \| 2018 Plan
Restructuring Reserve
Cash payments			(26)
Industrial Systems
Restructuring Reserve
Restructuring accrual at beginning of period			4,096
Adjustments to provision			(975)
Foreign currency translation			73
Restructuring accrual at end of period	$ 4,321		4,321
Industrial Systems \| 2020 Plan
Restructuring Reserve
Charged to expense			1,749
Non-cash charges			0
Cash payments			(82)
Industrial Systems \| 2018 Plan
Restructuring Reserve
Cash payments			$ (540)