v3.24.0.1
Revenue Recognition - Contract Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Revenue from Contract with Customer [Abstract]    
Air traffic liability - passenger travel $ 1,099 $ 1,291
Air traffic liability - loyalty program (air transportation) 1,072 1,000
Deferred revenue 487 530
Total $ 2,658 $ 2,821