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Employee Benefit Plans - Narrative (Details) - Pension Benefits $ in Millions | 6 Months Ended
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Jun. 30, 2024 USD ($)
Defined Benefit Plan Disclosure [Line Items] |
Defined benefit plan, contributed amount | $ 281
American Airlines, Inc. |
Defined Benefit Plan Disclosure [Line Items] |
Defined benefit plan, contributed amount | $ 280

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