Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Tax Credit Carryforward [Line Items]
Other carryforwards			$ 6,000
Income tax benefit	$ 94	$ 175
American Airlines, Inc.
Tax Credit Carryforward [Line Items]
Other carryforwards			3,800
Income tax benefit	$ 64	$ 144
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