Changes In Amount Of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 29, 2014		Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 11,932	[1]
Other	(5)	[2]
Goodwill, end of period	11,927
Aerospace
Goodwill [Roll Forward]
Goodwill, beginning of period	2,741	[1]
Other	(2)	[2]
Goodwill, end of period	2,739
Combat Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	2,849	[1]
Other	(5)	[2]
Goodwill, end of period	2,844
Marine Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	289	[1]
Other	0	[2]
Goodwill, end of period	289
Information Systems and Technology
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss			1,994
Goodwill [Roll Forward]
Goodwill, beginning of period	6,053	[1]
Other	2	[2]
Goodwill, end of period	$ 6,055

[1] Goodwill on December 31, 2013, in the Information Systems and Technology reporting unit is net of $1,994 of accumulated impairment losses.

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