Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Tax Credit Carryforward [Line Items]
Other carryforwards			$ 3,000
Deferred tax assets, valuation allowance	$ 34
Income tax benefit	(451)	$ (323)
Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards			17,200
Operating loss carryforwards and other carryforwards, subject to expiration			6,900
Operating loss carryforwards and other carryforwards, not subject to expiration			13,300
State
Tax Credit Carryforward [Line Items]
NOL carryforward subject to expiration			6,000
American Airlines, Inc.
Tax Credit Carryforward [Line Items]
Other carryforwards			2,400
Deferred tax assets, valuation allowance	24
Income tax benefit	$ (436)	$ (314)
American Airlines, Inc. | Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards			17,100
Operating loss carryforwards and other carryforwards, subject to expiration			7,300
Operating loss carryforwards and other carryforwards, not subject to expiration			12,200
American Airlines, Inc. | State
Tax Credit Carryforward [Line Items]
NOL carryforward subject to expiration			$ 6,000