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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Segment Information - Summary of Segment Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 27, 2015	Mar. 28, 2014	Dec. 31, 2014
Net Sales:
Net Sales	$ 2,713us-gaap_Revenues	$ 2,957us-gaap_Revenues
Operating Income:
Operating income	200us-gaap_OperatingIncomeLoss	286us-gaap_OperatingIncomeLoss
Loss related to business divestiture	(22)us-gaap_GainLossOnSaleOfBusiness
Depreciation and amortization:
Depreciation and amortization	55	54
Total Assets:
Assets held for sale	496		547
Total Assets	13,782us-gaap_Assets		13,836us-gaap_Assets
Operating Segments [Member]
Operating Income:
Operating income	222	286
Loss related to business divestiture	(22)
Operating Segments [Member] \| Electronic Systems [Member]
Net Sales:
Net Sales	1,038	1,098
Operating Income:
Operating income	114	125
Depreciation and amortization:
Depreciation and amortization	28	29
Total Assets:
Total Assets	6,335		6,287
Operating Segments [Member] \| Aerospace Systems [Member]
Net Sales:
Net Sales	1,027	1,074
Operating Income:
Operating income	62	93
Depreciation and amortization:
Depreciation and amortization	12	10
Total Assets:
Total Assets	3,057		3,011
Operating Segments [Member] \| Communication Systems [Member]
Net Sales:
Net Sales	444	517
Operating Income:
Operating income	35	50
Depreciation and amortization:
Depreciation and amortization	12	12
Total Assets:
Total Assets	2,064		1,997
Operating Segments [Member] \| NSS [Member]
Net Sales:
Net Sales	245	305
Operating Income:
Operating income	11	18
Depreciation and amortization:
Depreciation and amortization	3	3
Total Assets:
Total Assets	1,315		1,287
Corporate [Member]
Total Assets:
Total Assets	515		707
Elimination of Intercompany Sales [Member]
Net Sales:
Net Sales	$ (41)	$ (37)