Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for obsolescence of spare parts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 490	$ 784	$ 814
Additions Charged to Statement of Operations Accounts	177	100	91
Deductions	(33)	(394)	(121)
Balance at End of Year	634	490	784
Allowance for credit losses on accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	36	31	29
Additions Charged to Statement of Operations Accounts	22	27	19
Deductions	(24)	(22)	(17)
Balance at End of Year	34	36	31
American Airlines, Inc. | Allowance for obsolescence of spare parts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	442	729	754
Additions Charged to Statement of Operations Accounts	165	81	79
Deductions	(19)	(368)	(104)
Balance at End of Year	588	442	729
American Airlines, Inc. | Allowance for credit losses on accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	29	25	24
Additions Charged to Statement of Operations Accounts	21	25	17
Deductions	(22)	(21)	(16)
Balance at End of Year	$ 28	$ 29	$ 25