Special Items, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Operating special items, net	$ 198	$ (4,455)	$ (966)
Mark-to-market adjustments on equity and other investments, net	71	31	135
Debt refinancing, extinguishment and other, net	3	29	35
Nonoperating special items, net	74	60	170
Income tax special items, net	(9)	0	0
Fleet equipment impairment and inventory write-down			1,500
Operating lease, impairment loss			109
American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Operating special items, net	193	(4,518)	(995)
Mark-to-market adjustments on equity and other investments, net	71	31	135
Debt refinancing, extinguishment and other, net	1	29	35
Nonoperating special items, net	72	60	170
Income tax special items, net	(9)	0	0
Fleet equipment impairment and inventory write-down			1,500
Operating lease, impairment loss			109
Mainline
Restructuring Cost and Reserve [Line Items]
Fleet impairment	149	0	1,484
Litigation reserve adjustments	37	(19)	0
PSP financial assistance	0	(4,162)	(3,710)
Severance expenses	0	168	1,408
Mark-to-market adjustments on bankruptcy obligations, net	0	(3)	(49)
Labor contract expenses	0	0	228
Other operating special items, net	7	10	(18)
Operating special items, net	193	(4,006)	(657)
Mainline | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Fleet impairment	149	0	1,484
Litigation reserve adjustments	37	(19)	0
PSP financial assistance	0	(4,162)	(3,710)
Severance expenses	0	168	1,408
Mark-to-market adjustments on bankruptcy obligations, net	0	(3)	(49)
Labor contract expenses	0	0	228
Other operating special items, net	7	10	(18)
Operating special items, net	193	(4,006)	(657)
Regional Carrier
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	27	117
PSP financial assistance	0	(539)	(444)
Severance expenses	0	2	18
Other operating special items, net	5	0	0
Operating special items, net	5	(449)	(309)
Regional pilot retention program	0	61	0
Regional Carrier | American Airlines, Inc.
Restructuring Cost and Reserve [Line Items]
Fleet impairment	0	27	106
PSP financial assistance	0	(539)	(444)
Operating special items, net	$ 0	$ (512)	$ (338)