Revenue Recognition - Significant Contract Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total	$ 17,170	$ 15,527
American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Total	17,170	15,527
Loyalty program liability
Disaggregation of Revenue [Line Items]
Total	9,619	9,327
Loyalty program liability | American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Total	9,619	9,327
Air traffic liability
Disaggregation of Revenue [Line Items]
Total	7,551	6,200
Air traffic liability | American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Total	$ 7,551	$ 6,200