Valuation and Qualifying Accounts (Details) - Allowance for obsolescence of spare parts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 634	$ 490	$ 784
Additions Charged to Statement of Operations Accounts	96	177	100
Deductions	(114)	(33)	(394)
Balance at End of Year	616	634	490
American Airlines, Inc.
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	588	442	729
Additions Charged to Statement of Operations Accounts	82	165	81
Deductions	(104)	(19)	(368)
Balance at End of Year	$ 566	$ 588	$ 442