Special Items, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 951	$ 39	$ 970	$ 191
Debt refinancing and extinguishment	42	0	76	2
Mark-to-market adjustments on equity investments, net	59	(57)	70	32
Nonoperating special items, net	101	(57)	146	34
Income tax special items, net	0	0	0	(9)
Collective bargaining agreement, one-time payment	754
Adjustments to other benefit-related items	229
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Debt refinancing and extinguishment	42	0	76	0
Mark-to-market adjustments on equity investments, net	59	(57)	70	32
Nonoperating special items, net	101	(57)	146	32
Income tax special items, net	0	0	0	(9)
Collective bargaining agreement, one-time payment	754
Adjustments to other benefit-related items	229
Mainline operating special items, net
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	983	0	983	0
Severance expenses	0	0	21	0
Fleet impairment	0	0	0	149
Litigation reserve adjustments	0	37	0	37
Other operating special items, net	(34)	0	(42)	3
Operating special items, net	949	37	962	189
Mainline operating special items, net | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Labor contract expenses	983	0	983	0
Severance expenses	0	0	21	0
Fleet impairment	0	0	0	149
Litigation reserve adjustments	0	37	0	37
Other operating special items, net	(34)	0	(42)	3
Operating special items, net	949	37	962	189
Regional operating special items, net
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 2	$ 2	$ 8	$ 2