Segment Information Intersegment Sales and Operating Income (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Sales	$ 39,290	$ 36,602	$ 35,667
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	2,537	3,601	5,651
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	2,199	2,179	2,110
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	298	303	272
Intersegment sales | Aeronautics Systems
Segment Reporting Information [Line Items]
Sales	240	239	189
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	22	27	19
Intersegment sales | Defense Systems
Segment Reporting Information [Line Items]
Sales	798	806	789
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	97	95	89
Intersegment sales | Mission Systems
Segment Reporting Information [Line Items]
Sales	1,054	1,015	993
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	167	167	150
Intersegment sales | Space Systems
Segment Reporting Information [Line Items]
Sales	107	119	139
Intersegment sales and operating income (Table Amounts) [Abstract]
Operating income	$ 12	$ 14	$ 14