Debt - Schedule of Line of Credit (Details) $ in Millions	Sep. 30, 2023 USD ($)
Debt Instrument [Line Items]
Total	$ 2,868
American Airlines, Inc.
Debt Instrument [Line Items]
Total	2,868
Revolving Credit Facility | 2013 Revolving Facility
Debt Instrument [Line Items]
Total	736
Revolving Credit Facility | 2014 Revolving Facility
Debt Instrument [Line Items]
Total	1,631
Revolving Credit Facility | April 2016 Revolving Facility
Debt Instrument [Line Items]
Total	446
Revolving Credit Facility | Other short-term facility
Debt Instrument [Line Items]
Total	55
Revolving Credit Facility | American Airlines, Inc. | 2013 Revolving Facility
Debt Instrument [Line Items]
Total	736
Revolving Credit Facility | American Airlines, Inc. | 2014 Revolving Facility
Debt Instrument [Line Items]
Total	1,631
Revolving Credit Facility | American Airlines, Inc. | April 2016 Revolving Facility
Debt Instrument [Line Items]
Total	446
Revolving Credit Facility | American Airlines, Inc. | Other short-term facility
Debt Instrument [Line Items]
Total	$ 55