v3.24.0.1
Investments - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]      
Change in fair value $ 2,000,000 $ (4,000,000) $ 0
Equity method investments 43,000,000 38,000,000  
Debt securities, realized gain (loss) 1,000,000 0 0
Unrealized gain (loss) 0 5,000,000 2,000,000
Debt securities, net unrealized gain (loss) 2,000,000 (12,000,000) (10,000,000)
Realized gain on equity investment securities 4,000,000 1,000,000 0
Cost method investments - jetblue tech ventures 96,000,000 83,000,000  
Recognized gain (loss) on investment 2,000,000 (2,000,000) 37,000,000
Cost method investments TWA flight center hotel $ 14,000,000 14,000,000  
TWA Flight Center Hotel      
Debt and Equity Securities, FV-NI [Line Items]      
Ownership percentage, noncontrolling interest 10.00%    
Recurring      
Debt and Equity Securities, FV-NI [Line Items]      
Equity investment securities   8,000,000  
Level 1 | Recurring      
Debt and Equity Securities, FV-NI [Line Items]      
Equity investment securities $ 0 8,000,000  
Available-for-sale securities      
Debt and Equity Securities, FV-NI [Line Items]      
Change in fair value $ 1,000,000 $ (1,000,000) $ 0