Special Items, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 39	$ (1,057)	$ 191	$ (4,435)
Mark-to-market adjustments on equity and other investments, net	(57)	16	32	3
Debt refinancing, extinguishment and other, net	0	2	2	28
Nonoperating special items, net	(57)	18	34	31
Income tax special items, net	0	0	(9)	0
Payments for salary and medical costs	40	190	180	480
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Operating special items, net	37	(1,118)	189	(4,498)
Mark-to-market adjustments on equity and other investments, net	(57)	16	32	3
Debt refinancing, extinguishment and other, net	0	2	0	28
Nonoperating special items, net	(57)	18	32	31
Income tax special items, net	0	0	(9)	0
Payments for salary and medical costs	40	190	180	480
Mainline
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	149	0
Litigation reserve adjustments	37	0	37	0
PSP Financial Assistance	0	(992)	0	(4,162)
Severance expenses	0	0	0	168
Mark-to-market adjustments on bankruptcy obligations, net	0	(1)	0	5
Other operating special items, net	0	3	3	3
Operating special items, net	37	(990)	189	(3,986)
Mainline | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	149	0
Litigation reserve adjustments	37	0	37	0
PSP Financial Assistance	0	(992)	0	(4,162)
Severance expenses	0	0	0	168
Mark-to-market adjustments on bankruptcy obligations, net	0	(1)	0	5
Other operating special items, net	0	3	3	3
Operating special items, net	37	(990)	189	(3,986)
Regional Carrier
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	0	27
PSP Financial Assistance	0	(128)	0	(539)
Severance expenses	0	0	0	2
Other operating special items, net	2	0	2	0
Operating special items, net	2	(67)	2	(449)
Regional pilot retention program	0	61	0	61
Regional Carrier | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	0	27
PSP Financial Assistance	0	(128)	0	(539)
Operating special items, net	$ 0	$ (128)	$ 0	$ (512)