Goodwill and Identifiable Intangible Assets - Changes in Goodwill by Segment (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 27, 2014
Goodwill [Line Items]
Balance, Beginning	$ 7,796
Business acquisition	37
Foreign currency translation adjustments	5
Balance, Ending	7,838
Aerospace Systems [Member]
Goodwill [Line Items]
Balance, Beginning	1,751
Business acquisition
Foreign currency translation adjustments
Balance, Ending	1,751
Electronic Systems [Member]
Goodwill [Line Items]
Balance, Beginning	4,085
Business acquisition	(3)
Foreign currency translation adjustments	4
Balance, Ending	4,086
Communication Systems [Member]
Goodwill [Line Items]
Balance, Beginning	992
Business acquisition
Foreign currency translation adjustments
Balance, Ending	992
NSS [Member]
Goodwill [Line Items]
Balance, Beginning	968
Business acquisition	40
Foreign currency translation adjustments	1
Balance, Ending	$ 1,009