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Supplemental Financial Information - Accounts Payable (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Accounts payable trade | $ 272 | $ 277
Salaries, withholdings and payroll taxes | 368 | 456
Ticket taxes and fees | 434 | 242
Aircraft maintenance payable | 91 | 65
Fuel payable | 113 | 188
Dividends payable | 0 | 107
Customer reimbursements and refunds | 17 | 311
Accrued third party services | 240 | 196
Other payable | 194 | 162
Accounts payable | $ 1,729 | $ 2,004

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