Debt - EETCs (Details) - American Airlines, Inc. - Enhanced Equipment Trust Certificates (EETC) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)	Nov. 30, 2021 USD ($) aircraft
Debt Instrument [Line Items]
Proceeds held in escrow from issuance of debt	$ 866
Enhanced Equipment Trust Certificates 2021-1
Debt Instrument [Line Items]
Aggregate principal issued		$ 960
Number of aircraft financed by debt issuance \| aircraft		26
Repayments of long-term debt	$ 94
Number of aircrafts financed through repurchased debt \| aircraft		5

Face (par) amount of debt instrument at time of issuance.

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