Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Operating loss and other carryforwards	$ 4,679	$ 4,612
Loyalty program liability	1,809	1,903
Leases	1,819	1,833
Pensions	474	941
Postretirement benefits other than pensions	179	214
Rent expense	130	92
Other	742	784
Total deferred tax assets	9,832	10,379
Valuation allowance	(19)	(34)
Net deferred tax assets	9,813	10,345
Deferred tax liabilities:
Accelerated depreciation and amortization	(4,630)	(4,747)
Leases	(1,832)	(1,767)
Other	(262)	(284)
Total deferred tax liabilities	(6,724)	(6,798)
Net deferred tax asset	3,089	3,547
American Airlines, Inc.
Deferred tax assets:
Operating loss and other carryforwards	4,492	4,476
Loyalty program liability	1,809	1,903
Leases	1,804	1,822
Pensions	467	934
Postretirement benefits other than pensions	179	215
Rent expense	130	92
Other	689	734
Total deferred tax assets	9,570	10,176
Valuation allowance	(9)	(24)
Net deferred tax assets	9,561	10,152
Deferred tax liabilities:
Accelerated depreciation and amortization	(4,603)	(4,715)
Leases	(1,817)	(1,758)
Other	(256)	(279)
Total deferred tax liabilities	(6,676)	(6,752)
Net deferred tax asset	$ 2,885	$ 3,400