Consolidated Balance Sheets - American Airlines, Inc. (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accumulated amortization of intangibles	$ 834	$ 827
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,750,000,000	1,750,000,000
Common stock, shares issued (in shares)	654,273,192	650,642,461
Common stock, shares outstanding (in shares)	654,273,192	650,642,461
American Airlines, Inc.
Accumulated amortization of intangibles	$ 834	$ 827
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, shares issued (in shares)	1,000	1,000
Common stock, shares outstanding (in shares)	1,000	1,000