Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Tax Credit Carryforward [Line Items]
Other carryforwards			$ 4,300
Income tax provision (benefit)	$ 7	$ (451)
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)	$ 29	$ (436)
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