Impairment (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($) Reporting_Unit	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Long-lived assets	$ 43,400	$ 43,400
Impairment charge	23	$ 838
Number of reporting units for goodwill impairment testing | Reporting_Unit		1
Goodwill	4,091	$ 4,091	$ 4,091
Indefinite-lived intangible assets	1,800	1,800
American Airlines, Inc. [Member]
Restructuring Cost and Reserve [Line Items]
Long-lived assets	43,000	43,000
Impairment charge	12	$ 827
Number of reporting units for goodwill impairment testing | Reporting_Unit		1
Goodwill	4,091	$ 4,091	$ 4,091
Indefinite-lived intangible assets	$ 1,800	$ 1,800