Debt - Special Facility Revenue Bonds (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt	$ 3,773	$ 1,670	$ 4,822
American Airlines, Inc.
Debt Instrument [Line Items]
Proceeds from issuance of long-term debt	$ 3,773	$ 1,670	$ 4,822