Debt - 2012-2C(R) EETCs (Details) - Enhanced Equipment Trust Certificates (EETC) [Member]	Sep. 30, 2018 USD ($)	May 15, 2018 USD ($)	Jun. 06, 2013 USD ($) Aircraft
2012-2 Class C(R) EETC [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	$ 100,000,000	$ 100,000,000
Number of aircraft financed by debt issuance | Aircraft			11
Class C Certificates [Member]
Debt Instrument [Line Items]
Debt instrument principal amount			$ 100,000,000
American Airlines, Inc. [Member] | 2012-2 Class C(R) EETC [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	$ 100,000,000	$ 100,000,000
Number of aircraft financed by debt issuance | Aircraft			11
American Airlines, Inc. [Member] | Class C Certificates [Member]
Debt Instrument [Line Items]
Debt instrument principal amount			$ 100,000,000