INFORMATION ON BUSINESS SEGMENTS - Summary of Operating Results For Each Business Segment (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Mar. 28, 2021	Jun. 26, 2022	Jun. 27, 2021
Net sales
Total net sales	$ 15,446	$ 17,029		$ 30,410	$ 33,287
Operating profit
Total operating profit	1,963	2,192		3,896	4,374
Unallocated items
Severance and restructuring charges	0	0	$ 36	0	36
Aeronautics
Net sales
Total net sales	5,862	6,666		12,263	13,053
Missiles and Fire Control
Net sales
Total net sales	2,747	2,944		5,199	5,693
Rotary and Mission Systems
Net sales
Total net sales	4,012	4,242		7,564	8,349
Space
Net sales
Total net sales	2,825	3,177		5,384	6,192
Business Segments
Net sales
Total net sales	15,446	17,029		30,410	33,287
Amortization of purchased intangibles	(62)	(81)		(124)	(162)
Operating profit
Total operating profit	1,701	1,766		3,357	3,515
Business Segments | Aeronautics
Net sales
Total net sales	5,862	6,666		12,263	13,053
Amortization of purchased intangibles	(1)	(1)		(1)	(1)
Operating profit
Total operating profit	612	572		1,291	1,265
Business Segments | Missiles and Fire Control
Net sales
Total net sales	2,747	2,944		5,199	5,693
Amortization of purchased intangibles	0	0		(1)	(1)
Operating profit
Total operating profit	418	401		802	797
Business Segments | Rotary and Mission Systems
Net sales
Total net sales	4,012	4,242		7,564	8,349
Amortization of purchased intangibles	(58)	(58)		(116)	(116)
Operating profit
Total operating profit	403	458		751	891
Business Segments | Space
Net sales
Total net sales	2,825	3,177		5,384	6,192
Amortization of purchased intangibles	(3)	(22)		(6)	(44)
Operating profit
Total operating profit	268	335		513	562
Unallocated items
Unallocated items
FAS/CAS pension operating adjustment	425	489		851	978
Severance and restructuring charges	0	0		0	(36)
Other, net	(163)	(63)		(312)	(83)
Total unallocated items	262	426		539	859
Intersegment sales
Net sales
Total net sales	771	759		1,525	1,501
Intersegment sales | Aeronautics
Net sales
Total net sales	58	52		118	105
Intersegment sales | Missiles and Fire Control
Net sales
Total net sales	161	167		317	296
Intersegment sales | Rotary and Mission Systems
Net sales
Total net sales	453	448		908	926
Intersegment sales | Space
Net sales
Total net sales	$ 99	$ 92		$ 182	$ 174