Segment Information Reconciliation to Consolidated Operating Income (Details 1) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Number of reportable segments	4
Sales	$ 35,667	$ 36,799	$ 33,841
Operating income	5,651	4,065	3,969
Operating Segments
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Operating income	4,217	4,188	3,978
Operating Segments | Aeronautics Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	11,259	12,169	11,116
Operating income	1,093	1,206	1,188
Operating Segments | Defense Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	5,776	7,543	7,495
Operating income	696	846	793
Operating Segments | Mission Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	10,134	10,080	9,410
Operating income	1,579	1,459	1,408
Operating Segments | Space Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	10,608	8,744	7,425
Operating income	1,121	893	794
Intersegment sales
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	2,110	1,737	1,605
Operating income	272	216	205
Intersegment sales | Aeronautics Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	189	122	103
Operating income	19	11	10
Intersegment sales | Defense Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	789	728	691
Operating income	89	76	74
Intersegment sales | Mission Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	993	779	728
Operating income	150	116	113
Intersegment sales | Space Systems
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Sales	139	108	83
Operating income	14	13	8
Corporate, Non-Segment [Member]
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
Operating income	1,304	(541)	(474)
Segment Reconciling Items [Member]
Sales and Service Revenues by Segment (Table Amounts) [Abstract]
FAS/CAS operating adjustment	$ 130	$ 418	$ 465