Segment Information (Unaudited) Reconciliation to Consolidated Operating Income (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Sales	$ 8,797	$ 9,157
Operating income	897	2,822
Pre-tax gain on sale of business		2,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	1,037	1,095
Operating Segments [Member] | Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,703	2,990
Operating income	307	308
Operating Segments [Member] | Defense Systems [Member]
Segment Reporting Information [Line Items]
Sales	1,283	1,562
Operating income	155	177
Operating Segments [Member] | Mission Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,497	2,589
Operating income	385	397
Operating Segments [Member] | Space Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,855	2,521
Operating income	261	276
Intersegment sales
Segment Reporting Information [Line Items]
Sales	541	505
Operating income	71	63
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
FAS/CAS operating adjustment	(46)	19
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income	$ (94)	$ 1,708