Segment Information - Summary of Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Dec. 31, 2015
Net Sales:
Net sales	$ 2,353	$ 2,488
Operating Income:
Loss related to business divestiture		(22)
Operating income	$ 252	187
Depreciation and amortization:
Depreciation and amortization	$ 50	52
Total Assets:
Assets of discontinued operations			$ 664
Total Assets	$ 11,911		12,067
Operating Segments [Member]
Operating Income:
Operating income	252	209
Operating Segments [Member] | Electronic Systems [Member]
Net Sales:
Net sales	903	1,046
Operating Income:
Operating income	95	113
Depreciation and amortization:
Depreciation and amortization	25	28
Total Assets:
Total Assets	6,533		6,426
Operating Segments [Member] | Aerospace Systems [Member]
Net Sales:
Net sales	1,007	1,027
Operating Income:
Operating income	106	60
Depreciation and amortization:
Depreciation and amortization	13	12
Total Assets:
Total Assets	2,769		2,630
Operating Segments [Member] | Communication Systems [Member]
Net Sales:
Net sales	477	455
Operating Income:
Operating income	51	36
Depreciation and amortization:
Depreciation and amortization	12	12
Total Assets:
Total Assets	2,064		1,984
Corporate [Member]
Total Assets:
Total Assets	545		$ 363
Elimination of Intercompany Sales [Member]
Net Sales:
Net sales	$ (34)	$ (40)