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.

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+ Details

REVENUE - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
REVENUE - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Receivables - net	$ 630		$ 565
Passenger revenue
Disaggregation of Revenue [Line Items]
Revenue recognized	784	$ 887
Loyalty Plan Revenue
Disaggregation of Revenue [Line Items]
Receivables - net	$ 147		$ 154