Income Taxes (Details) $ in Billions	Dec. 31, 2023 USD ($)
Tax Credit Carryforward [Line Items]
Other carryforwards	$ 4.7
American Airlines, Inc.
Tax Credit Carryforward [Line Items]
Other carryforwards	3.6
Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards	13.7
Operating loss carryforwards and other carryforwards, subject to expiration	3.4
Operating loss carryforwards and other carryforwards, not subject to expiration	15.0
Federal | American Airlines, Inc.
Tax Credit Carryforward [Line Items]
NOL carryforwards	13.7
Operating loss carryforwards and other carryforwards, subject to expiration	3.8
Operating loss carryforwards and other carryforwards, not subject to expiration	13.5
State
Tax Credit Carryforward [Line Items]
NOL carryforwards	5.5
State | American Airlines, Inc.
Tax Credit Carryforward [Line Items]
NOL carryforwards	$ 5.3