Restructuring (Restructuring Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 7,846	$ 14,546	$ 11,389
Charged to expense	0	15,393	15,449
Adjustment to provision	(1,743)	(851)	(716)
Foreign currency translation	43	73	(94)
Balance at end of period	1,168	7,846	14,546
Employee severence and other restructuring
Restructuring Reserve [Roll Forward]
Charged to expense		15,393	15,449
2013 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(490)
2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(533)	(848)	(8,833)
2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(426)	(11,119)	(1,687)
Non-cash charges			(472)
2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(4,019)	(4,435)
Non-cash charges		(4,913)
Balance at end of period	1,168
Aircraft Controls
Restructuring Reserve [Roll Forward]
Balance at beginning of period	1,474	3,047	5,439
Adjustment to provision	(852)	(275)	(407)
Foreign currency translation	(4)	(44)	(27)
Balance at end of period	130	1,474	3,047
Aircraft Controls | Employee Severance
Restructuring Reserve [Roll Forward]
Charged to expense			2,955
Aircraft Controls | Employee severence and other restructuring
Restructuring Reserve [Roll Forward]
Charged to expense		7,317
Aircraft Controls | 2013 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Aircraft Controls | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(116)	(72)	(4,833)
Aircraft Controls | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(210)	(2,342)	(80)
Non-cash charges			0
Aircraft Controls | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(162)	(1,244)
Non-cash charges		(4,913)
Space And Defense Controls
Restructuring Reserve [Roll Forward]
Balance at beginning of period	665	7,237	5,764
Charged to expense		0
Adjustment to provision	(72)	(328)	(309)
Foreign currency translation	0	(13)	(63)
Balance at end of period	0	665	7,237
Space And Defense Controls | Employee Severance
Restructuring Reserve [Roll Forward]
Charged to expense			6,324
Space And Defense Controls | 2013 Plan
Restructuring Reserve [Roll Forward]
Cash payments			(490)
Space And Defense Controls | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(417)	(776)	(3,822)
Space And Defense Controls | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(176)	(5,455)	(167)
Non-cash charges			0
Space And Defense Controls | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments	0	0
Non-cash charges		0
Industrial Systems
Restructuring Reserve [Roll Forward]
Balance at beginning of period	3,611	4,003	186
Adjustment to provision	(816)	(243)	0
Foreign currency translation	47	130	(4)
Balance at end of period	0	3,611	4,003
Industrial Systems | Employee Severance
Restructuring Reserve [Roll Forward]
Charged to expense		4,824
Industrial Systems | Employee severence and other restructuring
Restructuring Reserve [Roll Forward]
Charged to expense			5,150
Industrial Systems | 2013 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Industrial Systems | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments	0	0	(178)
Industrial Systems | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(20)	(3,088)	(679)
Non-cash charges			(472)
Industrial Systems | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(2,822)	(2,015)
Non-cash charges		0
Components
Restructuring Reserve [Roll Forward]
Balance at beginning of period	369	259	0
Adjustment to provision	(3)	(5)	0
Foreign currency translation	0	0	0
Balance at end of period	0	369	259
Components | Employee Severance
Restructuring Reserve [Roll Forward]
Charged to expense		1,525	1,020
Components | 2013 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Components | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments	0	0	0
Components | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(20)	(234)	(761)
Non-cash charges			0
Components | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments	(346)	(1,176)
Non-cash charges		0
Corporate, Non-Segment
Restructuring Reserve [Roll Forward]
Balance at beginning of period	1,727	0	0
Charged to expense			0
Adjustment to provision	0	0	0
Foreign currency translation	0	0	0
Balance at end of period	1,038	1,727	0
Corporate, Non-Segment | Employee Severance
Restructuring Reserve [Roll Forward]
Charged to expense		1,727
Corporate, Non-Segment | 2013 Plan
Restructuring Reserve [Roll Forward]
Cash payments			0
Corporate, Non-Segment | 2014 Plan
Restructuring Reserve [Roll Forward]
Cash payments	0	0	0
Corporate, Non-Segment | 2015 Plan
Restructuring Reserve [Roll Forward]
Cash payments	0	0	0
Non-cash charges			$ 0
Corporate, Non-Segment | 2016 Plan
Restructuring Reserve [Roll Forward]
Cash payments	$ (689)	0
Non-cash charges		$ 0