Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Accumulated amortization of intangibles	$ 612	$ 578
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,750,000,000	1,750,000,000
Common stock, shares issued	479,999,894	507,294,153
Common stock, shares outstanding	479,999,894	507,294,153
American Airlines, Inc. [Member]
Accumulated amortization of intangibles	$ 612	$ 578
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	1,000	1,000
Common stock, shares outstanding	1,000	1,000