Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Non-cash investing and financing activities:
Equity investment	$ 88	$ 0	$ 0
Settlement of bankruptcy obligations	(1)	56	7
Deferred financing costs paid through issuance of debt	0	17	0
Supplemental information:
Interest paid, net	1,632	944	1,111
Income taxes paid	3	6	8
American Airlines, Inc.
Non-cash investing and financing activities:
Equity investment	88	0	0
Settlement of bankruptcy obligations	4	56	7
Deferred financing costs paid through issuance of debt	0	17	0
Supplemental information:
Interest paid, net	1,481	877	1,025
Income taxes paid	$ 2	$ 6	$ 8