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Revenue - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Residual travel funds (as a percent) | 7.00% |  | 7.00% |  | 9.00%
Total operating revenues | $ 7,037 | $ 6,728 | $ 12,743 | $ 11,422 |
Chase Bank USA Agreement |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Total operating revenues | $ 540 | $ 522 | $ 1,100 | $ 1,000 |

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