Special Items, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ (5)	$ (1,455)	$ 152	$ (3,377)
Mark-to-market adjustments on equity and other investments, net	89	37	90	(13)
Debt refinancing, extinguishment and other, net	0	0	2	26
Nonoperating special items, net	89	37	92	13
Income tax special items, net	(9)	0	(9)	0
Payments for salary and medical costs	50	120	140	290
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Operating special items, net	(5)	(1,455)	152	(3,379)
Mark-to-market adjustments on equity and other investments, net	89	37	90	(13)
Debt refinancing, extinguishment and other, net	0	0	0	26
Nonoperating special items, net	89	37	90	13
Income tax special items, net	(9)	0	(9)	0
Payments for salary and medical costs	50	120	140	290
Mainline
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	149	0
PSP Financial Assistance	0	(1,288)	0	(3,170)
Severance expenses	0	0	0	168
Mark-to-market adjustments on bankruptcy obligations, net	0	0	0	6
Other operating special items, net	(5)	0	3	0
Operating special items, net	(5)	(1,288)	152	(2,996)
Mainline | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	149	0
PSP Financial Assistance	0	(1,288)	0	(3,170)
Severance expenses	0	0	0	168
Mark-to-market adjustments on bankruptcy obligations, net	0	0	0	6
Other operating special items, net	(5)	0	3	0
Operating special items, net	(5)	(1,288)	152	(2,996)
Regional Carrier
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	0	27
PSP Financial Assistance	0	(167)	0	(410)
Severance expenses	0	0	0	2
Operating special items, net	0	(167)	0	(381)
Regional Carrier | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	0	0	27
PSP Financial Assistance	0	(167)	0	(410)
Operating special items, net	$ 0	$ (167)	$ 0	$ (383)