Discontinued Operations Assets and Liabilities Held for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014	Oct. 25, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	$ 11,012
Inventories	25,876
Prepaid expenses	829
Deferred income tax benefits	1,351
Income tax refundable	2,378
Current Assets of Businesses Held for Sale	41,446	0
Net Property, plant and equipment	28,893
Intangibles, net	41,214
Deferred income tax benefits	(30)
Other assets	1,600
Non-Current Assets of Businesses Held for Sale	71,677
Accounts payable	9,393
Accrued liabilities	4,798
Current Liabilities of Businesses Held for Sale	14,191
Deferred income tax liabilities	18,864
Other liabilities	12
Non-Current Liabilities of Businesses Held for Sale	18,876	0
Net Assets of Businesses Held for Sale	80,056
Avionics & Controls
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	5,154
Inventories	12,646
Prepaid expenses	408
Deferred income tax benefits	671
Income tax refundable	0
Current Assets of Businesses Held for Sale	18,879
Net Property, plant and equipment	4,949
Intangibles, net	22,228
Deferred income tax benefits	0
Other assets	0
Non-Current Assets of Businesses Held for Sale	27,177
Accounts payable	2,194
Accrued liabilities	1,765
Current Liabilities of Businesses Held for Sale	3,959
Deferred income tax liabilities	11,084
Other liabilities	0
Non-Current Liabilities of Businesses Held for Sale	11,084
Net Assets of Businesses Held for Sale	31,013
Sensors & Systems
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	3,752
Inventories	7,972
Prepaid expenses	86
Deferred income tax benefits	680
Income tax refundable	0
Current Assets of Businesses Held for Sale	12,490
Net Property, plant and equipment	4,105
Intangibles, net	10,659
Deferred income tax benefits	(30)
Other assets	0
Non-Current Assets of Businesses Held for Sale	14,734
Accounts payable	873
Accrued liabilities	1,008
Current Liabilities of Businesses Held for Sale	1,881
Deferred income tax liabilities	6,243
Other liabilities	0
Non-Current Liabilities of Businesses Held for Sale	6,243
Net Assets of Businesses Held for Sale	19,100
Advanced Materials
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable, net	2,106
Inventories	5,258
Prepaid expenses	335
Deferred income tax benefits	0
Income tax refundable	2,378
Current Assets of Businesses Held for Sale	10,077
Net Property, plant and equipment	19,839
Intangibles, net	8,327
Deferred income tax benefits	0
Other assets	1,600
Non-Current Assets of Businesses Held for Sale	29,766
Accounts payable	6,326
Accrued liabilities	2,025
Current Liabilities of Businesses Held for Sale	8,351
Deferred income tax liabilities	1,537
Other liabilities	12
Non-Current Liabilities of Businesses Held for Sale	1,549
Net Assets of Businesses Held for Sale	$ 29,943