Basis of Presentation - Additional Information (Detail) - ASU 2016-09 [Member] - Adjustments for New Accounting Principle, Early Adoption [Member] $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets, previously unrecognized excess tax benefits from stock compensation	$ 418
Recognition of excess tax benefits from share based compensation to income tax provision	9
Retained Earnings (Deficit) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase to retained earnings due to recognition of previously unrecognized excess tax benefits from stock compensation	418
American Airlines, Inc. [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets, previously unrecognized excess tax benefits from stock compensation	418
Recognition of excess tax benefits from share based compensation to income tax provision	9
American Airlines, Inc. [Member] | Retained Earnings (Deficit) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase to retained earnings due to recognition of previously unrecognized excess tax benefits from stock compensation	$ 418