Contract Asset and Liability (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenue from contract with customer [Line Items]
Contract assets	$ 11,836		$ 11,836		$ 11,361
Contract liabilities	(13,430)		(13,430)		(13,720)
Net contract liabilities	(1,594)		(1,594)		(2,359)
Contract with Customer, Asset, Change			475
Contract with Customer, Liability, Change			290
Contract with Customer, Liability, Revenue Recognized	1,200	$ 1,000	3,000	$ 2,700
Advances received to date on contracts related to precision guided munitions to certain Middle Eastern customers pending U.S. government approval	380		380
Contract with Customer, Asset, Allowance for Credit Loss	$ 318		$ 318		$ 251