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v3.23.3

REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |
Revenue recognized that was previously deferred | $ 6,700 | $ 3,900 |
Cash sales of mileage credits | $ 5,200 | $ 4,100 |
Redemption period for majority of new miles (in years) | 2 years |  |
Air traffic |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract with customer, liability |  |  | $ 8,300
Contract with customer, liability, noncurrent |  |  | $ 100

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