Acquisitions and Divestitures, Goodwill, and Intangible Assets Changes In Amount Of Goodwill (Detail) - USD ($) $ in Millions		6 Months Ended
		Jul. 03, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	$ 11,443
Acquisitions	[2]	24
Other	[3]	105
Goodwill, end of period		11,572
Aerospace
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	2,542
Acquisitions	[2]	19
Other	[3]	44
Goodwill, end of period		2,605
Combat Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	2,591
Acquisitions	[2]	0
Other	[3]	56
Goodwill, end of period		2,647
Information Systems and Technology
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	6,021
Acquisitions	[2]	5
Other	[3]	5
Goodwill, end of period		6,031
Goodwill, Impaired, Accumulated Impairment Loss			$ 2,000
Marine Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	289
Acquisitions	[2]	0
Other	[3]	0
Goodwill, end of period		$ 289

[1] Goodwill on December 31, 2015, in the Information Systems and Technology reporting unit is net of $2 billion of accumulated impairment losses.

[2] Includes adjustments during the purchase price allocation period.

[3] Consists primarily of adjustments for foreign currency translation.