Liabilities, Commitments, and Contingencies - Schedule of 737 Max Customer Concessions and Other Considerations Liability (Details) - B-737 Aircraft - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Customer Concession And Other Consideration Liability [Roll Forward]
Beginning balance – January 1	$ 1,864	$ 2,940
Reductions for payments made	(449)	(1,031)
Reductions for concessions and other in-kind considerations	(61)	(29)
Changes in estimates	(27)	(16)
Ending balance – December 31	$ 1,327	$ 1,864