Acquisitions, Intangible Assets And Goodwill (Schedule Of Changes In The Carrying Amount Of Goodwill By Reporting Unit) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								3 Months Ended
	Apr. 01, 2012		Apr. 01, 2012 Aerospace [Member]		Apr. 01, 2012 Combat Systems [Member]		Apr. 01, 2012 Marine Systems [Member]	Dec. 31, 2011 Marine Systems [Member]	Apr. 01, 2012 Information Systems And Technology [Member]
Acquisitions, Intangible Assets And Goodwill [Line Items]
Goodwill, beginning of period	$ 13,576		$ 2,644		$ 2,839		$ 229	$ 229	$ 7,864
Acquisitions	77	[1]	13	[1]	57	[1]			7	[1]
Other	106	[2]	65	[2]	32	[2]			9	[2]
Goodwill, end of period	$ 13,759		$ 2,722		$ 2,928		$ 229	$ 229	$ 7,880

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

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