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Contract Asset and Liability (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Revenue from contract with customer [Line Items]          
Contract assets $ 14,684   $ 14,684   $ 12,139
Contract liabilities (18,436)   (18,436)   (17,183)
Net contract liabilities (3,752)   (3,752)   (5,044)
Contract with Customer, Asset, Change     2,500    
Contract with Customer, Liability, Change     1,300    
Contract with Customer, Liability, Revenue Recognized 1,300 $ 900 5,700 $ 4,400  
Advances received to date on contracts related to precision guided munitions to certain Middle Eastern customers pending U.S. government approval 430   430    
Contract with Customer, Asset, Allowance for Credit Loss $ 177   $ 177   $ 197