Contract Asset and Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Revenue from contract with customer [Line Items]
Contract assets	$ 12,729		$ 11,534
Contract liabilities	(14,870)		(14,598)
Net contract liabilities	(2,141)		(3,064)
Contract with Customer, Asset, Change	1,195
Contract with Customer, Liability, Change	272
Contract with Customer, Liability, Revenue Recognized	1,900	$ 1,800
Advances received to date on contracts related to precision guided munitions to certain Middle Eastern customers pending U.S. government approval	395
Contract with Customer, Asset, Allowance for Credit Loss	$ 330		$ 318