Segment Information (Unaudited) Reconciliation to Consolidated Operating Income (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenues	$ 9,996	$ 9,775	$ 30,347	$ 28,652
Operating income	1,120	1,016	3,281	2,930
Total operating costs and expenses	8,876	8,759	27,066	25,722
Interest and Debt Expense	(161)	(141)	(461)	(417)
Non-operating FAS pension benefit	168	132	503	397
Other, net	61	111	142	193
Earnings before income taxes	1,188	1,118	3,465	3,103
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	1,146	1,089	3,351	3,143
Operating Segments [Member] | Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Revenues	2,878	2,766	8,810	7,876
Operating income	298	283	890	798
Operating Segments [Member] | Defense Systems [Member]
Segment Reporting Information [Line Items]
Revenues	2,084	2,050	6,227	6,058
Operating income	196	201	614	605
Operating Segments [Member] | Mission Systems [Member]
Segment Reporting Information [Line Items]
Revenues	2,823	2,628	8,255	7,832
Operating income	390	386	1,129	1,147
Operating Segments [Member] | Space Systems [Member]
Segment Reporting Information [Line Items]
Revenues	2,870	2,953	9,021	8,775
Operating income	345	302	979	840
Intersegment sales
Segment Reporting Information [Line Items]
Revenues	659	622	1,966	1,889
Operating income	83	83	261	247
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
FAS/CAS operating adjustment	20	(20)	32	(62)
Total operating costs and expenses	$ (46)	$ (53)	$ (102)	$ (151)