INFORMATION ON BUSINESS SEGMENTS - Summary Operating Results For Each Business Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 24, 2023	Sep. 25, 2022	Sep. 24, 2023	Sep. 25, 2022
Net sales
Total net sales	$ 16,878	$ 16,583	$ 48,697	$ 46,993
Operating profit
Total operating profit	2,042	2,159	6,214	6,055
Aeronautics
Net sales
Total net sales	6,717	7,089	19,861	19,352
Missiles and Fire Control
Net sales
Total net sales	2,939	2,831	8,082	8,030
Rotary and Mission Systems
Net sales
Total net sales	4,121	3,781	11,528	11,345
Space
Net sales
Total net sales	3,101	2,882	9,226	8,266
Business Segments
Net sales
Total net sales	16,878	16,583	48,697	46,993
Operating profit
Total operating profit	1,810	1,918	5,347	5,399
Business Segments | Aeronautics
Net sales
Total net sales	6,717	7,089	19,861	19,352
Operating profit
Total operating profit	671	759	2,064	2,051
Business Segments | Missiles and Fire Control
Net sales
Total net sales	2,939	2,831	8,082	8,030
Operating profit
Total operating profit	398	383	1,146	1,186
Business Segments | Rotary and Mission Systems
Net sales
Total net sales	4,121	3,781	11,528	11,345
Operating profit
Total operating profit	482	472	1,286	1,339
Business Segments | Space
Net sales
Total net sales	3,101	2,882	9,226	8,266
Operating profit
Total operating profit	259	304	851	823
Unallocated items
Unallocated items
Total FAS/CAS pension operating adjustment	414	430	1,245	1,281
Intangible asset amortization expense	(61)	(62)	(185)	(186)
Other, net	(121)	(127)	(193)	(439)
Total unallocated items	232	241	867	656
Intersegment sales
Net sales
Total net sales	854	814	2,455	2,339
Intersegment sales | Aeronautics
Net sales
Total net sales	62	63	186	181
Intersegment sales | Missiles and Fire Control
Net sales
Total net sales	177	146	482	463
Intersegment sales | Rotary and Mission Systems
Net sales
Total net sales	518	503	1,512	1,411
Intersegment sales | Space
Net sales
Total net sales	$ 97	$ 102	$ 275	$ 284