Liabilities, Commitments and Contingencies - Schedule of 737 Max Customer Concessions and Other Considerations Liability (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Customer Concession And Other Consideration Liability [Roll Forward]
Ending balance – September 30	$ 1,500
B-737
Customer Concession And Other Consideration Liability [Roll Forward]
Beginning balance – January 1	1,864	$ 2,940
Reductions for payments made	(304)	(959)
Reductions for concessions and other in-kind considerations	(55)	(29)
Changes in estimates	(54)	(16)
Ending balance – September 30	$ 1,451	$ 1,936