Restructuring (Restructuring Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 4,123	$ 8,113	$ 1,168
Charged to expense	10,700	0	28,794
Non-cash charges	(234)
Adjustment to provision	(893)	284	111
Foreign currency translation	249	(423)	(341)
Balance at end of period	10,342	4,123	8,113
2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(599)
2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(451)
2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(446)	(5,706)
2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			40,992
Non-cash charges			(27,061)
Cash payments	(731)	(3,405)
Balance at end of period	2,734
2020 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	10,700
Cash payments	(2,872)
Balance at end of period	7,608
Aircraft Controls
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	626	130
Non-cash charges	(234)
Adjustment to provision	0	13	0
Foreign currency translation	0	(7)	(7)
Balance at end of period	1,247	0	626
Aircraft Controls | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Aircraft Controls | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Aircraft Controls | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments		0	(99)
Aircraft Controls | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			987
Non-cash charges			(385)
Cash payments	0	(632)
Aircraft Controls | 2020 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	3,340
Cash payments	(1,859)
Space and Defense Controls
Restructuring Reserve [Roll Forward]
Balance at beginning of period	27	64	0
Non-cash charges	0
Adjustment to provision	(1)	(21)	119
Foreign currency translation	0	0	0
Balance at end of period	0	27	64
Space and Defense Controls | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Space and Defense Controls | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(101)
Space and Defense Controls | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments		0	0
Space and Defense Controls | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			46
Non-cash charges			0
Cash payments	(26)	(16)
Space and Defense Controls | 2020 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	185
Cash payments	(185)
Industrial Systems
Restructuring Reserve [Roll Forward]
Balance at beginning of period	4,096	6,994	0
Non-cash charges	0
Adjustment to provision	(892)	275	2
Foreign currency translation	249	(416)	(334)
Balance at end of period	9,095	4,096	6,994
Industrial Systems | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Industrial Systems | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Industrial Systems | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments		0	(5,607)
Industrial Systems | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			39,609
Non-cash charges			(26,676)
Cash payments	(705)	(2,757)
Industrial Systems | 2020 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	7,175
Cash payments	(828)
Corporate
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	429	1,038
Non-cash charges	0
Adjustment to provision	0	17	(10)
Foreign currency translation	0	0	0
Balance at end of period	0	0	429
Corporate | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(599)
Corporate | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(350)
Corporate | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(446)	0
Corporate | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			350
Non-cash charges			$ 0
Cash payments	0	$ 0
Corporate | 2020 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	0
Cash payments	$ 0