Special Items, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 979	$ 198	$ (4,455)
Mark-to-market adjustments on equity and other investments, net	82	71	31
Debt refinancing, extinguishment and other, net	280	3	29
Nonoperating special items, net	362	74	60
Income tax special items, net	0	(9)	0
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	989	0	0
Severance expenses	23	0	168
Fleet impairment	0	149	0
Litigation reserve adjustments	0	37	(19)
PSP financial assistance	0	0	(4,162)
Other operating special items, net	(41)	7	7
Operating special items, net	971	193	(4,006)
Regional Carrier
Restructuring Cost and Reserve [Line Items]
Severance expenses	0	0	2
Fleet impairment	0	0	27
PSP financial assistance	0	0	(539)
Other operating special items, net	8	5	0
Operating special items, net	8	5	(449)
Regional pilot retention program	0	0	61
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Operating special items, net	971	193	(4,518)
Mark-to-market adjustments on equity and other investments, net	82	71	31
Debt refinancing, extinguishment and other, net	280	1	29
Nonoperating special items, net	362	72	60
Income tax special items, net	0	(9)	0
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	989	0	0
Severance expenses	23	0	168
Fleet impairment	0	149	0
Litigation reserve adjustments	0	37	(19)
PSP financial assistance	0	0	(4,162)
Other operating special items, net	(41)	7	7
Operating special items, net	971	193	(4,006)
American Airlines, Inc. | Regional Carrier
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	27
PSP financial assistance	0	0	(539)
Operating special items, net	$ 0	$ 0	$ (512)