Special Items, Net (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) aircraft	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 643	$ 979	$ 198
Debt refinancing, extinguishment and other, net	16	280	3
Mark-to-market adjustments on equity and other investments, net	8	82	71
Nonoperating special items, net	24	362	74
Income tax special items, net	0	0	(9)
Allied Pilots Association
Restructuring Cost and Reserve [Line Items]
Collective bargaining agreement, one-time payment		754
Adjustments to other benefit-related items		235
Mainline
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	605	989	0
A330 fleet-related adjustments	(42)	0	149
Severance expenses	13	23	0
Litigation reserve adjustments	0	0	37
Other operating special items, net	34	(41)	7
Operating special items, net	610	971	193
A330 fleet-related adjustments	42	0	(149)
Mainline | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
A330 fleet-related adjustments	(42)
A330 fleet-related adjustments	42
Regional Carrier
Restructuring Cost and Reserve [Line Items]
Operating special items, net	33	8	5
Regional Carrier | 43 Embraer 145 Aircraft
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 33
Number of aircrafts permanently parked | aircraft	43
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 643	971	193
Debt refinancing, extinguishment and other, net	16	280	1
Mark-to-market adjustments on equity and other investments, net	8	82	71
Nonoperating special items, net	24	362	72
Income tax special items, net	0	0	(9)
American Airlines, Inc. | Allied Pilots Association
Restructuring Cost and Reserve [Line Items]
Collective bargaining agreement, one-time payment		754
Adjustments to other benefit-related items		235
American Airlines, Inc. | Mainline
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	605	989	0
A330 fleet-related adjustments	(42)	0	149
Severance expenses	13	23	0
Litigation reserve adjustments	0	0	37
Other operating special items, net	34	(41)	7
Operating special items, net	610	971	193
A330 fleet-related adjustments	42	0	(149)
American Airlines, Inc. | Mainline | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
A330 fleet-related adjustments	(42)
A330 fleet-related adjustments	42
American Airlines, Inc. | Regional Carrier
Restructuring Cost and Reserve [Line Items]
Operating special items, net	33	$ 0	$ 0
American Airlines, Inc. | Regional Carrier | 43 Embraer 145 Aircraft
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 33
Number of aircrafts permanently parked | aircraft	43