Debt - Schedule of Line of Credit (Details) - Revolving Credit Facility - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Apr. 21, 2025
Debt Instrument [Line Items]
Total	$ 3,290
2013, 2014 and 2023 Credit Facilities
Debt Instrument [Line Items]
Total	2,900
2013, 2014 and 2023 Credit Facilities | Subsequent Event
Debt Instrument [Line Items]
Total		$ 3,000
Amount outstanding		0
2013 Revolving Facility
Debt Instrument [Line Items]
Total	500
2014 Revolving Facility
Debt Instrument [Line Items]
Total	1,500
2023 Revolving Facility
Debt Instrument [Line Items]
Total	890
Other facilities
Debt Instrument [Line Items]
Total	400
American Airlines, Inc.
Debt Instrument [Line Items]
Total	3,290
American Airlines, Inc. | 2013, 2014 and 2023 Credit Facilities
Debt Instrument [Line Items]
Total	2,900
American Airlines, Inc. | 2013, 2014 and 2023 Credit Facilities | Subsequent Event
Debt Instrument [Line Items]
Total		3,000
Amount outstanding		$ 0
American Airlines, Inc. | 2013 Revolving Facility
Debt Instrument [Line Items]
Total	500
American Airlines, Inc. | 2014 Revolving Facility
Debt Instrument [Line Items]
Total	1,500
American Airlines, Inc. | 2023 Revolving Facility
Debt Instrument [Line Items]
Total	890
American Airlines, Inc. | Other facilities
Debt Instrument [Line Items]
Total	400
American Airlines, Inc. | Other Revolving Facility
Debt Instrument [Line Items]
Line of credit facility, aggregate commitments	350
American Airlines, Inc. | Other Revolving Facility | Secured Debt
Debt Instrument [Line Items]
Amount drawn	0
American Airlines, Inc. | Cargo Receivable Facility
Debt Instrument [Line Items]
Total	$ 50