Basis of Presentation (Unaudited) EAC Change (Details 6) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Change in Accounting Estimate [Line Items]
Operating income	$ 1,016		$ 844		$ 2,930	$ 2,695
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Operating income	$ 58		$ 45		$ 180	$ 310
Restricted Program [Member] | Contracts Accounted for under Percentage of Completion [Member] | Aeronautics Systems [Member]
Change in Accounting Estimate [Line Items]
Operating income				$ 67
HALO Program | Contracts Accounted for under Percentage of Completion [Member] | Space Systems [Member]
Change in Accounting Estimate [Line Items]
Operating income		$ 36