v3.24.0.1
Revenue Recognition - Current And Non-Current Air Traffic Liability (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Revenue From Contract With Customer [Roll Forward]    
Beginning balance $ 1,000 $ 891
TrueBlue® points redeemed passenger (605) (508)
TrueBlue® points earned and sold 701 617
TrueBlue® points redeemed other (24)  
Ending balance $ 1,072 $ 1,000