Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Tax Credit Carryforward [Line Items]
Income tax provision (benefit)	$ (649)	$ 60
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)	$ (628)	$ 74
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