Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Non-cash investing and financing activities:
ROU assets acquired through operating leases	$ 637	$ 1,180	$ 1,483
Property and equipment acquired through debt, finance leases and other	152	317	46
Operating leases converted to finance leases	293	5	107
Finance leases converted to operating leases	50	42	3
Supplemental information:
Interest paid, net	1,933	2,180	1,852
Income taxes paid	8	6	2
American Airlines, Inc.
Non-cash investing and financing activities:
ROU assets acquired through operating leases	614	1,172	1,448
Property and equipment acquired through debt, finance leases and other	151	317	46
Operating leases converted to finance leases	293	5	107
Finance leases converted to operating leases	50	42	3
Supplemental information:
Interest paid, net	1,806	2,058	1,716
Income taxes paid	$ 8	$ 6	$ 2