Discontinued Operations Income (Loss) Net of Tax (Detail) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended							11 Months Ended		12 Months Ended
	Oct. 02, 2015	Jul. 31, 2015	May. 01, 2015	Jan. 30, 2015	Oct. 31, 2014	Aug. 01, 2014	May. 02, 2014	Jan. 31, 2014	Oct. 02, 2015	Sep. 26, 2014	Oct. 31, 2014	Oct. 25, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales									$ 72,519		$ 103,812	$ 103,095
Operating earnings (loss)									(10,104)		(18,209)	(7,809)
Loss on net assets held for sale									(31,154)	$ (49,472)	(49,472)	0
Tax expense (benefit)									(4,205)		(5,070)	(3,418)
Income (loss) from discontinued operations	$ (17,718)	$ (1,371)	$ (1,688)	$ (16,276)	$ (54,836)	$ (469)	$ (3,412)	$ (3,894)	(37,053)	$ (59,240)	(62,611)	(4,391)
Avionics & Controls
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales									40,952		55,447	54,001
Operating earnings (loss)									(5,727)		(5,546)	(4,955)
Loss on net assets held for sale									(18,864)		(18,489)
Tax expense (benefit)									(3,002)		(1,935)	(2,092)
Income (loss) from discontinued operations									(21,589)		(22,100)	(2,863)
Sensors & Systems
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales									18,684		22,479	25,599
Operating earnings (loss)									3,270		(181)	1,566
Loss on net assets held for sale									(229)		(12,675)
Tax expense (benefit)									626		(523)	689
Income (loss) from discontinued operations									2,415		(12,333)	877
Advanced Materials
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales									12,883		25,886	23,495
Operating earnings (loss)									(5,527)		(11,637)	(2,420)
Loss on net assets held for sale									(12,061)		(18,308)
Tax expense (benefit)									(1,104)		(2,316)	(1,315)
Income (loss) from discontinued operations									(16,484)		(27,629)	(1,105)
Other
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Sales									0		0	0
Operating earnings (loss)									(2,120)		(845)	(2,000)
Loss on net assets held for sale									0		0
Tax expense (benefit)									(725)		(296)	(700)
Income (loss) from discontinued operations									$ (1,395)		$ (549)	$ (1,300)