Employee Benefit Plans - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Supplemental contribution	$ 12
American Airlines, Inc.
Defined Benefit Plan Disclosure [Line Items]
Supplemental contribution	12
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributed amount	284
Pension Benefits | American Airlines, Inc.
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributed amount	$ 280