REVENUE - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Disaggregation of Revenue [Line Items] | |||||
| Receivables - net | $ 681 | $ 681 | $ 565 | ||
| Passenger revenue | |||||
| Disaggregation of Revenue [Line Items] | |||||
| Revenue recognized | 207 | $ 211 | 991 | $ 1,100 | |
| Loyalty Plan Revenue | |||||
| Disaggregation of Revenue [Line Items] | |||||
| Receivables - net | $ 168 | $ 168 | $ 154 | ||
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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