Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 3	$ 3
Interest cost	140	132	416	394
Expected return on assets	(284)	(269)	(853)	(813)
Special termination benefits			0	0
Amortization of:
Prior service cost (benefit)	7	7	21	21
Unrecognized net loss (gain)	39	54	117	159
Net periodic benefit income	(97)	(75)	(296)	(236)
Retiree Medical and Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	2	11	7
Interest cost	7	8	22	23
Expected return on assets	(3)	(3)	(9)	(9)
Special termination benefits			0	139
Amortization of:
Prior service cost (benefit)	(3)	(3)	(10)	(10)
Unrecognized net loss (gain)	(6)	(6)	(19)	(17)
Net periodic benefit income	(2)	(2)	(5)	133
American Airlines, Inc. | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	3
Interest cost	139	132	414	392
Expected return on assets	(283)	(269)	(850)	(809)
Special termination benefits			0	0
Amortization of:
Prior service cost (benefit)	7	7	21	21
Unrecognized net loss (gain)	39	54	117	158
Net periodic benefit income	(97)	(75)	(296)	(235)
American Airlines, Inc. | Retiree Medical and Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	2	11	7
Interest cost	7	8	22	23
Expected return on assets	(3)	(3)	(9)	(9)
Special termination benefits			0	139
Amortization of:
Prior service cost (benefit)	(3)	(3)	(10)	(10)
Unrecognized net loss (gain)	(6)	(6)	(19)	(17)
Net periodic benefit income	$ (2)	$ (2)	$ (5)	$ 133