Revenue Recognition - Significant Contract Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total	$ 17,680	$ 15,527
American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Total	17,680	15,527
Loyalty program liability
Disaggregation of Revenue [Line Items]
Total	9,650	9,327
Loyalty program liability | American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Total	9,650	9,327
Air traffic liability
Disaggregation of Revenue [Line Items]
Total	8,030	6,200
Air traffic liability | American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Total	$ 8,030	$ 6,200