Goodwill and Intangible Assets - Changes In Carrying Amount of Goodwill by Reporting Unit (Details) $ in Millions	6 Months Ended
	Jul. 02, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 20,334	[1]
Acquisitions	16
Other	93	[2]
Goodwill, end of period	20,443	[1]
Aerospace
Goodwill [Roll Forward]
Goodwill, beginning of period	3,019	[1]
Acquisitions	0
Other	56	[2]
Goodwill, end of period	3,075	[1]
Marine Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	297	[1]
Acquisitions	0
Other	0	[2]
Goodwill, end of period	297	[1]
Combat Systems
Goodwill [Roll Forward]
Goodwill, beginning of period	2,766	[1]
Acquisitions	0
Other	29	[2]
Goodwill, end of period	2,795	[1]
Technologies
Goodwill [Roll Forward]
Goodwill, beginning of period	14,252	[1]
Acquisitions	16
Other	8	[2]
Goodwill, end of period	14,276	[1]
Accumulated impairment losses	$ 1,800

[1] Goodwill in the Technologies reporting unit was net of $1.8 billion of accumulated impairment losses.

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