INFORMATION ON BUSINESS SEGMENTS - Summary Operating Results For Each Business Segment (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 25, 2023	Jun. 30, 2024	Jun. 25, 2023
Net sales
Total net sales	$ 18,122	$ 16,693	$ 35,317	$ 31,819
Operating profit
Total operating profit	2,148	2,135	4,177	4,172
Unallocated items
Impairment and severance charges	(87)	0	(87)	0
Impairment and severance charges	87	0	87	0
Impairment and severance charges, after-tax	$ 69
Impairment and severance charges, after-tax (in dollars per share)	$ 0.29
Aeronautics
Net sales
Total net sales	$ 7,277	6,875	14,122	13,144
Missiles and Fire Control
Net sales
Total net sales	3,102	2,755	6,095	5,143
Rotary and Mission Systems
Net sales
Total net sales	4,548	3,897	8,636	7,407
Space
Net sales
Total net sales	3,195	3,166	6,464	6,125
Business Segments
Net sales
Total net sales	18,122	16,693	35,317	31,819
Operating profit
Total operating profit	2,042	1,855	3,787	3,537
Business Segments | Aeronautics
Net sales
Total net sales	7,277	6,875	14,122	13,144
Operating profit
Total operating profit	751	718	1,430	1,393
Business Segments | Missiles and Fire Control
Net sales
Total net sales	3,102	2,755	6,095	5,143
Operating profit
Total operating profit	450	371	761	748
Business Segments | Rotary and Mission Systems
Net sales
Total net sales	4,548	3,897	8,636	7,407
Operating profit
Total operating profit	495	454	925	804
Business Segments | Space
Net sales
Total net sales	3,195	3,166	6,464	6,125
Operating profit
Total operating profit	346	312	671	592
Unallocated items
Unallocated items
FAS/CAS pension operating adjustment	406	416	812	831
Impairment and severance charges	(87)	0	(87)	0
Intangible asset amortization expense	(61)	(62)	(122)	(124)
Other, net	(152)	(74)	(213)	(72)
Total unallocated items	106	280	390	635
Impairment and severance charges	87	0	87	0
Intersegment sales
Net sales
Total net sales	944	827	1,909	1,601
Intersegment sales | Aeronautics
Net sales
Total net sales	67	71	137	124
Intersegment sales | Missiles and Fire Control
Net sales
Total net sales	204	159	406	305
Intersegment sales | Rotary and Mission Systems
Net sales
Total net sales	574	505	1,160	994
Intersegment sales | Space
Net sales
Total net sales	$ 99	$ 92	$ 206	$ 178