Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Income tax expense, effective rate		38.00%
Substantially All Deferred Tax Assets, Including Net Operating Losses [Member]
Income Taxes [Line Items]
Reversal of valuation allowance			$ (3,000)
Federal [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			8,000
Operating Loss Carryforward Increase (Decrease)	$ 2,500
State [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			4,000
Alternative Minimum Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Alternative minimum tax credit carryforwards			341
American Airlines, Inc. [Member]
Income Taxes [Line Items]
Income tax expense, effective rate		38.00%
American Airlines, Inc. [Member] | Substantially All Deferred Tax Assets, Including Net Operating Losses [Member]
Income Taxes [Line Items]
Reversal of valuation allowance			(3,500)
American Airlines, Inc. [Member] | Federal [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			8,800
Operating Loss Carryforward Increase (Decrease)	$ 2,400
American Airlines, Inc. [Member] | State [Member]
Income Taxes [Line Items]
Gross NOL Carryforwards			3,700
American Airlines, Inc. [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Alternative minimum tax credit carryforwards			$ 458