Changes in Goodwill by Segment (Detail) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	Oct. 02, 2015	Sep. 30, 2016
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 1,071,786	$ 1,041,991
Goodwill from acquisitions	48,537
Goodwill adjustments	(4,136)	(1,732)
Goodwill write off on assets held for sale	(2,043)
Foreign currency translation adjustment	(72,153)	(15,592)
Goodwill, Ending Balance	1,041,991	1,024,667
Avionics & Controls
Goodwill [Line Items]
Goodwill, Beginning Balance	440,015	450,599
Goodwill from acquisitions	48,537
Goodwill adjustments	(841)	(1,732)
Goodwill write off on assets held for sale	(2,043)
Foreign currency translation adjustment	(35,069)	(6,073)
Goodwill, Ending Balance	450,599	442,794
Sensors & Systems
Goodwill [Line Items]
Goodwill, Beginning Balance	425,353	387,707
Goodwill from acquisitions	0
Goodwill adjustments	(3,295)	0
Goodwill write off on assets held for sale	0
Foreign currency translation adjustment	(34,351)	(2,140)
Goodwill, Ending Balance	387,707	385,567
Advanced Materials
Goodwill [Line Items]
Goodwill, Beginning Balance	206,418	203,685
Goodwill from acquisitions	0
Goodwill adjustments	0	0
Goodwill write off on assets held for sale	0
Foreign currency translation adjustment	(2,733)	(7,379)
Goodwill, Ending Balance	$ 203,685	$ 196,306