Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Income Taxes [Line Items]
Income tax provision (benefit)	$ 131	$ 417
Alternative Minimum Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Alternative minimum tax credit carryforwards			$ 339
Federal [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			10,500
State [Member]
Income Taxes [Line Items]
NOL subject to expiration			3,700
American Airlines, Inc. [Member]
Income Taxes [Line Items]
Income tax provision (benefit)	$ 148	$ 424
American Airlines, Inc. [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Alternative minimum tax credit carryforwards			452
American Airlines, Inc. [Member] | Federal [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			11,300
American Airlines, Inc. [Member] | State [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			$ 3,400