v3.26.1
Income Taxes (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Tax Credit Carryforward [Line Items]          
Other carryforwards         $ 6,000
Income tax provision (benefit) $ 36 $ 239 $ (58) $ 63  
American Airlines, Inc.          
Tax Credit Carryforward [Line Items]          
Other carryforwards         3,800
Income tax provision (benefit) $ 70 $ 267 $ 7 $ 123  
Federal          
Tax Credit Carryforward [Line Items]          
NOL carryforwards         11,900
Operating loss carryforwards and other carryforwards, subject to expiration         1,600
Operating loss carryforwards and other carryforwards, not subject to expiration         16,300
Federal | American Airlines, Inc.          
Tax Credit Carryforward [Line Items]          
NOL carryforwards         11,700
Operating loss carryforwards and other carryforwards, subject to expiration         1,800
Operating loss carryforwards and other carryforwards, not subject to expiration         13,700
State          
Tax Credit Carryforward [Line Items]          
NOL carryforwards         5,000
State | American Airlines, Inc.          
Tax Credit Carryforward [Line Items]          
NOL carryforwards         $ 4,700