Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Tax Credit Carryforward [Line Items]
Income tax provision (benefit)	$ (592)	$ 220	$ (1,241)	$ 281
Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Alternative minimum tax credit carryforwards					$ 170
Federal [Member]
Tax Credit Carryforward [Line Items]
NOL carryforwards					9,100
State [Member]
Tax Credit Carryforward [Line Items]
NOL carryforwards					3,000
American Airlines, Inc. [Member]
Tax Credit Carryforward [Line Items]
Income tax provision (benefit)	$ (564)	$ 237	$ (1,191)	$ 311
American Airlines, Inc. [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Alternative minimum tax credit carryforwards					226
American Airlines, Inc. [Member] | Federal [Member]
Tax Credit Carryforward [Line Items]
NOL carryforwards					9,200
American Airlines, Inc. [Member] | State [Member]
Tax Credit Carryforward [Line Items]
NOL carryforwards					$ 2,900