Basis of Presentation and Recent Accounting Pronouncements (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	$ 662	$ 185	$ 556	$ 159	$ 847	$ 716
Tax Act - reclassification of stranded tax effects from accumulated other comprehensive loss to retained earnings	622
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income			(10)			(37)
American Airlines, Inc. [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income	714	$ 230	609	$ 209	$ 944	818
Tax Act - reclassification of stranded tax effects from accumulated other comprehensive loss to retained earnings	$ 622
American Airlines, Inc. [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income			$ (10)			$ (37)