Debt - 2019-1 EETCs - Certain Information (Details) - Enhanced Equipment Trust Certificates (EETC) [Member]	Sep. 30, 2019 USD ($)
2019-1 EETC - Series AA [Member]
Debt Instrument [Line Items]
Remaining escrowed proceeds	$ 308,000,000
American Airlines, Inc. [Member] | 2019-1 EETC - Series AA [Member]
Debt Instrument [Line Items]
Aggregate principal issued	$ 579,000,000
Fixed interest rate per annum	3.15%
American Airlines, Inc. [Member] | 2019-1 EETC - Series A [Member]
Debt Instrument [Line Items]
Aggregate principal issued	$ 289,000,000
Remaining escrowed proceeds	$ 154,000,000
Fixed interest rate per annum	3.50%
American Airlines, Inc. [Member] | 2019-1 EETC - Series B [Member]
Debt Instrument [Line Items]
Aggregate principal issued	$ 229,000,000
Remaining escrowed proceeds	$ 122,000,000
Fixed interest rate per annum	3.85%