Debt - Components of Long-Term Debt - 2017-1 Enhanced Equipment Trust Certificates (Detail) - Enhanced Equipment Trust Certificates (EETC) [Member] - 2017-1 EETC [Member] $ in Millions	1 Months Ended
	Jan. 31, 2017 USD ($) Aircraft Debt_Instruments	Mar. 31, 2017 USD ($)
Debt Instrument [Line Items]
Number of pass-through trusts issued | Debt_Instruments	3
Debt instrument principal amount	$ 983
Number of aircraft financed by debt issuance | Aircraft	24
Debt instrument, escrowed proceeds used to purchase notes		$ 635
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Number of pass-through trusts issued | Debt_Instruments	3
Debt instrument principal amount	$ 983
Number of aircraft financed by debt issuance | Aircraft	24
Debt instrument, escrowed proceeds used to purchase notes		$ 635