Employee Benefit Plans - Narrative (Details) - Pension Benefits - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2026
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributed amount		$ 237
Supplemental contributions	$ 50
American Airlines, Inc.
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributed amount		$ 236
Supplemental contributions	$ 50

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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+ Details

- 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.

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+ Details