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Revenue - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jul. 28, 2022 | Dec. 31, 2021 | Dec. 31, 2019
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Residual travel funds | 5.00% |  | 5.00% |  |  | 16.00% | 2.00%
Remaining customer travel funds | $ 1,100 |  | $ 1,100 |  |  |  |
Loyalty points, redemption period (in years) |  |  | 2 years |  |  |  |
Total operating revenues | 6,728 | $ 4,008 | $ 11,422 | $ 6,060 |  |  |
Subsequent Event |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Remaining customer travel funds |  |  |  |  | $ 1,900 |  |
Chase Bank USA Agreement |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |
Total operating revenues | $ 522 | $ 352 | $ 1,000 | $ 632 |  |  |

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