Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Tax Credit Carryforward [Line Items]
Other carryforwards					$ 4,300
Income tax provision (benefit)	$ 425	$ 127	$ 431	$ (324)
Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards					16,200
Operating loss carryforwards and other carryforwards, subject to expiration					5,900
Operating loss carryforwards and other carryforwards, not subject to expiration					14,600
State
Tax Credit Carryforward [Line Items]
NOL carryforward subject to expiration					6,000
American Airlines, Inc.
Tax Credit Carryforward [Line Items]
Other carryforwards					3,500
Income tax provision (benefit)	$ 452	$ 140	$ 482	$ (296)
American Airlines, Inc. | Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards					16,100
Operating loss carryforwards and other carryforwards, subject to expiration					6,200
Operating loss carryforwards and other carryforwards, not subject to expiration					13,400
American Airlines, Inc. | State
Tax Credit Carryforward [Line Items]
NOL carryforward subject to expiration					$ 5,900