Restructuring (Restructuring Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Oct. 01, 2016
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 1,168	$ 7,846	$ 14,546
Charged to expense	28,794	0	15,393
Adjustment to provision	111	(1,743)	(851)
Foreign currency translation	(341)	43	73
Balance at end of period	8,113	1,168	7,846
2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(533)	(848)
2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(426)	(11,119)
2016 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			15,393
Cash payments	(698)	(4,019)	(4,435)
Non-cash charges			(4,913)
Balance at end of period	429
2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	40,992
Cash payments	(6,443)
Non-cash charges	(26,676)
Balance at end of period	7,684
Aircraft Controls
Restructuring Reserve [Roll Forward]
Balance at beginning of period	130	1,474	3,047
Adjustment to provision	0	(852)	(275)
Foreign currency translation	(7)	(4)	(44)
Balance at end of period	626	130	1,474
Aircraft Controls | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(116)	(72)
Aircraft Controls | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(210)	(2,342)
Aircraft Controls | 2016 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			7,317
Cash payments	(99)	(162)	(1,244)
Non-cash charges			(4,913)
Aircraft Controls | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	987
Cash payments	(385)
Non-cash charges	0
Space And Defense Controls
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	665	7,237
Adjustment to provision	119	(72)	(328)
Foreign currency translation	0	0	(13)
Balance at end of period	64	0	665
Space And Defense Controls | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(417)	(776)
Space And Defense Controls | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(176)	(5,455)
Space And Defense Controls | 2016 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			0
Cash payments	0	0	0
Non-cash charges			0
Space And Defense Controls | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	46
Cash payments	(101)
Non-cash charges	0
Industrial Systems
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0	3,980	4,262
Adjustment to provision	2	(819)	(248)
Foreign currency translation	(334)	47	130
Balance at end of period	6,994	0	3,980
Industrial Systems | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments		0	0
Industrial Systems | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments		(40)	(3,322)
Industrial Systems | 2016 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			6,349
Cash payments	0	(3,168)	(3,191)
Non-cash charges			0
Industrial Systems | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	39,609
Cash payments	(5,607)
Non-cash charges	(26,676)
Corporate, Non-Segment
Restructuring Reserve [Roll Forward]
Balance at beginning of period	1,038	1,727	0
Adjustment to provision	(10)	0	0
Foreign currency translation	0	0	0
Balance at end of period	429	1,038	1,727
Corporate, Non-Segment | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments		0	0
Corporate, Non-Segment | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments		0	0
Corporate, Non-Segment | 2016 Plan
Restructuring Reserve [Roll Forward]
Charged to expense			1,727
Cash payments	(599)	$ (689)	0
Non-cash charges			$ 0
Corporate, Non-Segment | 2018 Plan
Restructuring Reserve [Roll Forward]
Charged to expense	350
Cash payments	(350)
Non-cash charges	$ 0