Special Items, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 554	$ 951	$ 625	$ 970
Mark-to-market adjustments on equity investments, net	(27)	59	23	70
Debt refinancing and extinguishment	0	42	7	76
Nonoperating special items, net	(27)	101	30	146
Allied Pilots Association
Restructuring Cost and Reserve [Line Items]
Collective bargaining agreement, one-time payment		754		754
Adjustments to other benefit-related items		229		229
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Mark-to-market adjustments on equity investments, net	(27)	59	23	70
Debt refinancing and extinguishment	0	42	7	76
Nonoperating special items, net	(27)	101	30	146
American Airlines, Inc. | Allied Pilots Association
Restructuring Cost and Reserve [Line Items]
Collective bargaining agreement, one-time payment		754		754
Adjustments to other benefit-related items		229		229
Mainline operating special items, net
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	516	983	573	983
Severance expenses	0	0	13	21
Other operating special items, net	38	(34)	39	(42)
Operating special items, net	554	949	625	962
Mainline operating special items, net | Association of Professional Flight Attendants
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	514
Mainline operating special items, net | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	516	983	573	983
Severance expenses	0	0	13	21
Other operating special items, net	38	(34)	39	(42)
Operating special items, net	554	949	625	962
Mainline operating special items, net | American Airlines, Inc. | Association of Professional Flight Attendants
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	514
Regional operating special items, net
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 0	$ 2	$ 0	$ 8