Segment Information Intersegment Sales and Operating Income (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Sales	$ 36,602	$ 35,667	$ 36,799
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	3,601	5,651	4,065
Pre-tax gain on sale of business		2,000
Unallowable State Taxes and Transactions Costs from Divestiture	192
Intersegment sales
Segment Reporting Information [Line Items]
Sales	2,179	2,110	1,737
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	303	272	216
Intersegment sales | Aeronautics Systems
Segment Reporting Information [Line Items]
Sales	239	189	122
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	27	19	11
Intersegment sales | Defense Systems
Segment Reporting Information [Line Items]
Sales	806	789	728
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	95	89	76
Intersegment sales | Mission Systems
Segment Reporting Information [Line Items]
Sales	1,015	993	779
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	167	150	116
Intersegment sales | Space Systems
Segment Reporting Information [Line Items]
Sales	119	139	108
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	$ 14	$ 14	$ 13