Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Tax Credit Carryforward [Line Items]
Income tax provision (benefit)	$ (696)	$ 132	$ (1,937)	$ 413
Alternative Minimum Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Alternative minimum tax credit carryforwards					$ 170
Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards					9,100
State
Tax Credit Carryforward [Line Items]
NOL carryforwards					3,000
American Airlines, Inc.
Tax Credit Carryforward [Line Items]
Income tax provision (benefit)	$ (660)	$ 160	$ (1,852)	$ 472
American Airlines, Inc. | Alternative Minimum Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Alternative minimum tax credit carryforwards					226
American Airlines, Inc. | Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards					9,200
American Airlines, Inc. | State
Tax Credit Carryforward [Line Items]
NOL carryforwards					$ 2,900