Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Airline Destination Disclosure [Line Items]
Operating revenues	$ 1,622	$ 11,960	$ 10,137	$ 22,544
Passenger [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,108	11,011	8,788	20,669
Passenger [Member] | Domestic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,026	8,009	6,806	15,235
Passenger [Member] | Latin America [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	34	1,241	1,214	2,612
Passenger [Member] | Atlantic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	42	1,407	565	2,080
Passenger [Member] | Pacific [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	6	354	203	742
American Airlines, Inc. [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,622	11,958	10,136	22,539
American Airlines, Inc. [Member] | Passenger [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,108	11,011	8,788	20,669
American Airlines, Inc. [Member] | Passenger [Member] | Domestic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,026	8,009	6,806	15,235
American Airlines, Inc. [Member] | Passenger [Member] | Latin America [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	34	1,241	1,214	2,612
American Airlines, Inc. [Member] | Passenger [Member] | Atlantic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	42	1,407	565	2,080
American Airlines, Inc. [Member] | Passenger [Member] | Pacific [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	$ 6	$ 354	$ 203	$ 742