INFORMATION ON BUSINESS SEGMENTS - Summary Operating Results For Each Business Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2025	Jun. 30, 2024	Jun. 29, 2025	Jun. 30, 2024
Sales
Total sales	$ 18,155	$ 18,122	$ 36,118	$ 35,317
Operating costs and expenses
Total operating costs and expenses	17,421	15,992	33,061	31,194
Operating profit
Total operating profit	748	2,148	3,120	4,177
Unallocated items
Impairment and severance charges	(66)	(87)	(66)	(87)
Business Segments
Sales
Total sales	18,155	18,122	36,118	35,317
Operating costs and expenses
Total operating costs and expenses	17,599	16,102	33,523	31,589
Operating profit
Total operating profit	571	2,042	2,656	3,787
Unallocated items
Unallocated items
FAS/CAS pension operating adjustment	379	406	758	812
Impairment and severance charges	(66)	(87)	(66)	(87)
Intangible asset amortization expense	(63)	(61)	(127)	(122)
Other, net	(73)	(152)	(101)	(213)
Total unallocated items	177	106	464	390
Intersegment sales
Sales
Total sales	(1,044)	(944)	(1,949)	(1,909)
Aeronautics
Sales
Total sales	7,420	7,277	14,477	14,122
Aeronautics | Business Segments
Sales
Total sales	7,420	7,277	14,477	14,122
Operating costs and expenses
Total operating costs and expenses	7,517	6,526	13,854	12,696
Operating profit
Total operating profit	(98)	751	622	1,430
Aeronautics | Intersegment sales
Sales
Total sales	(97)	(67)	(186)	(137)
Missiles and Fire Control
Sales
Total sales	3,433	3,102	6,806	6,095
Missiles and Fire Control | Business Segments
Sales
Total sales	3,433	3,102	6,806	6,095
Operating costs and expenses
Total operating costs and expenses	2,955	2,653	5,863	5,339
Operating profit
Total operating profit	479	450	944	761
Missiles and Fire Control | Intersegment sales
Sales
Total sales	(231)	(204)	(398)	(406)
Rotary and Mission Systems
Sales
Total sales	3,995	4,548	8,323	8,636
Rotary and Mission Systems | Business Segments
Sales
Total sales	3,995	4,548	8,323	8,636
Operating costs and expenses
Total operating costs and expenses	4,170	4,061	8,028	7,726
Operating profit
Total operating profit	(172)	495	349	925
Rotary and Mission Systems | Intersegment sales
Sales
Total sales	(632)	(574)	(1,198)	(1,160)
Space
Sales
Total sales	3,307	3,195	6,512	6,464
Space | Business Segments
Sales
Total sales	3,307	3,195	6,512	6,464
Operating costs and expenses
Total operating costs and expenses	2,957	2,862	5,778	5,828
Operating profit
Total operating profit	362	346	741	671
Space | Intersegment sales
Sales
Total sales	$ (84)	$ (99)	$ (167)	$ (206)