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Liabilities, Commitments and Contingencies - Schedule of 737 Max Customer Concessions and Other Considerations Liability (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Customer Concession And Other Consideration Liability [Roll Forward]        
Beginning balance $ 1,327 $ 1,864 $ 1,864  
Ending balance     1,327 $ 1,864
B-737        
Customer Concession And Other Consideration Liability [Roll Forward]        
Beginning balance 1,327 1,864 1,864 2,940
Reductions for payments made (681) (273) (449) (1,031)
Reductions for concessions and other in-kind considerations (221) (51) (61) (29)
Changes in estimates 510 (26) (27) (16)
Ending balance $ 935 $ 1,514 $ 1,327 $ 1,864