Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Tax Credit Carryforward [Line Items]
Other carryforwards					$ 5,900
Income tax provision (benefit)	$ (28)	$ (107)	$ 36	$ 103
American Airlines, Inc.
Tax Credit Carryforward [Line Items]
Other carryforwards					4,200
Income tax provision (benefit)	$ 5	$ (88)	$ 128	$ 208
Federal
Tax Credit Carryforward [Line Items]
NOL carryforwards					12,900
Operating loss carryforwards and other carryforwards, subject to expiration					2,600
Operating loss carryforwards and other carryforwards, not subject to expiration					16,200
Federal | American Airlines, Inc.
Tax Credit Carryforward [Line Items]
NOL carryforwards					12,800
Operating loss carryforwards and other carryforwards, subject to expiration					2,900
Operating loss carryforwards and other carryforwards, not subject to expiration					14,100
State
Tax Credit Carryforward [Line Items]
NOL carryforwards					5,200
State | American Airlines, Inc.
Tax Credit Carryforward [Line Items]
NOL carryforwards					$ 5,000