Consolidated Balance Sheets - American Airlines Group Inc. (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Accumulated amortization of intangibles	$ 786	$ 745
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)	647,727,595	621,479,522
Common stock, shares outstanding (in shares)	647,727,595	621,479,522