Valuation and Qualifying Accounts (Details) - Allowance for obsolescence of spare parts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning  of Year	$ 728	$ 616	$ 634
Additions Charged to Statement of Operations Accounts	116	98	96
Deductions and Other	(47)	14	(114)
Balance at End of Year	797	728	616
American Airlines, Inc.
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning  of Year	675	566	588
Additions Charged to Statement of Operations Accounts	94	83	82
Deductions and Other	(24)	26	(104)
Balance at End of Year	$ 745	$ 675	$ 566