Segment Information (Unaudited) Reconciliation to Consolidated Operating Income (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Sales	$ 9,775	$ 8,971	$ 28,652	$ 26,569
Operating income	1,016	844	2,930	2,695
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	1,089	1,007	3,143	3,117
Operating Segments [Member] | Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,766	2,537	7,876	7,774
Operating income	283	262	798	827
Operating Segments [Member] | Defense Systems [Member]
Segment Reporting Information [Line Items]
Sales	1,421	1,345	4,217	3,922
Operating income	182	158	508	481
Operating Segments [Member] | Mission Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,628	2,456	7,832	7,469
Operating income	386	368	1,147	1,166
Operating Segments [Member] | Space Systems [Member]
Segment Reporting Information [Line Items]
Sales	3,506	3,163	10,344	8,997
Operating income	312	290	908	861
Intersegment sales
Segment Reporting Information [Line Items]
Sales	546	530	1,617	1,593
Operating income	74	71	218	218
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
FAS/CAS operating adjustment	(20)	(55)	(62)	(152)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income	$ (53)	$ (108)	$ (151)	$ (270)