Goodwill and Intangible Assets (Changes In Carrying Amount of Goodwill by Reporting Unit) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	$ 20,098	$ 20,053
Acquisitions		336	87	[2]
Other	[3]	(100)	(42)
Goodwill, end of period		20,334	20,098	[1]
Aerospace
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	3,039	3,065
Acquisitions	[2]	0	33
Other	[3]	(20)	(59)
Goodwill, end of period		3,019	3,039	[1]
Marine Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	297	297
Acquisitions	[2]	0	0
Other	[3]	0	0
Goodwill, end of period		297	297	[1]
Combat Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	2,827	2,786
Acquisitions	[2]	0	54
Other	[3]	(61)	(13)
Goodwill, end of period		2,766	2,827	[1]
Technologies
Goodwill [Roll Forward]
Goodwill, beginning of period	[1]	13,935	13,905
Acquisitions	[2]	336	0
Other	[3]	(19)	30
Goodwill, end of period		14,252	$ 13,935	[1]
Accumulated impairment loss		$ 1,800

[1] accumulated impairment losses.

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

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