Debt - Narrative (Details)	1 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2022 USD ($) aircraft day	Dec. 31, 2021 USD ($)	Nov. 30, 2021 USD ($) aircraft	Jun. 30, 2020
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		$ 3,063,000,000
Unsecured Debt
Debt Instrument [Line Items]
Extinguishment of debt		$ 349,000,000
6.50% Senior Notes | Senior Notes
Debt Instrument [Line Items]
Fixed interest rate per annum		6.50%			6.50%
Conversion terms, percentage sales price exceeds conversion price	130.00%
Convertible debt, threshold trading days | day		20
Convertible debt, threshold consecutive trading days | day		30
Conversion ratio		0.0617284
6.50% Senior Notes | Unsecured Debt
Debt Instrument [Line Items]
Fixed interest rate per annum		6.50%
American Airlines, Inc.
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		$ 3,063,000,000
American Airlines, Inc. | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Proceeds held in escrow from issuance of debt		292,000,000
American Airlines, Inc. | Enhanced Equipment Trust Certificates 2021-1 | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 960,000,000
Repayments of long-term debt		$ 574,000,000	$ 94,000,000
Number of aircrafts financed through repurchased debt | aircraft		5
Number of aircraft financed by debt issuance | aircraft		14,000,000		26
American Airlines, Inc. | Revolving Credit Facility | Other Short-term Revolving Facility
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		$ 150,000,000
American Airlines, Inc. | Revolving Credit Facility | Cargo Receivable Facility
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		$ 70,000,000