Condensed Consolidated Balance Sheets - American Airlines, Inc. (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accumulated amortization of intangibles	$ 835	$ 834
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 outstanding (in shares)	656,045,635	654,273,192
Common stock, shares issued (in shares)	656,045,635	654,273,192
American Airlines, Inc.
Accumulated amortization of intangibles	$ 835	$ 834
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 outstanding (in shares)	1,000	1,000
Common stock, shares issued (in shares)	1,000	1,000