Segment Information (Unaudited) Reconciliation to Consolidated Operating Income (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Sales	$ 9,301	$ 8,797
Operating income	947	897
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	1,002	1,037
Operating Segments [Member] | Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,515	2,703
Operating income	237	307
Operating Segments [Member] | Defense Systems [Member]
Segment Reporting Information [Line Items]
Sales	1,376	1,283
Operating income	160	155
Operating Segments [Member] | Mission Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,563	2,497
Operating income	360	385
Operating Segments [Member] | Space Systems [Member]
Segment Reporting Information [Line Items]
Sales	3,350	2,855
Operating income	313	261
Intersegment sales
Segment Reporting Information [Line Items]
Sales	503	541
Operating income	68	71
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
FAS/CAS operating adjustment	(21)	(46)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income	$ (34)	$ (94)