Debt - Components of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total long-term debt	$ 37,532	$ 37,781
Less: Total unamortized debt discount, premium and issuance costs	439	458
Less: Current maturities	2,208	2,315
Long-term debt, net of current maturities	34,885	35,008
Secured Debt
Debt Instrument [Line Items]
Total long-term debt	31,853	31,785
Secured Debt | 2013 Revolving Facility
Debt Instrument [Line Items]
Total long-term debt	$ 1,770	1,770
Variable interest rate	2.20%
Secured Debt | 2014 Revolving Facility
Debt Instrument [Line Items]
Total long-term debt	$ 1,196	1,208
Variable interest rate	2.20%
Secured Debt | December 2016 Credit Facilities
Debt Instrument [Line Items]
Total long-term debt	$ 1,188	1,188
Variable interest rate	2.84%
Secured Debt | 11.75% Senior Secured Notes
Debt Instrument [Line Items]
Total long-term debt	$ 2,500	2,500
Fixed interest rate per annum	11.75%
Secured Debt | 10.75% Senior Secured Notes, IP Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,000	1,000
Fixed interest rate per annum	10.75%
Secured Debt | 10.75% Senior Secured Notes, LGA/DCA Notes
Debt Instrument [Line Items]
Total long-term debt	$ 200	200
Fixed interest rate per annum	10.75%
Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 3,500	3,500
Fixed interest rate per annum	5.50%
Secured Debt | 5.75% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 3,000	3,000
Fixed interest rate per annum	5.75%
Secured Debt | AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Total long-term debt	$ 3,500	3,500
Variable interest rate	5.50%
Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Total long-term debt	$ 9,564	9,357
Average interest rate	3.81%
Secured Debt | Enhanced Equipment Trust Certificates (EETC) | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	2.88%
Secured Debt | Enhanced Equipment Trust Certificates (EETC) | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	7.13%
Secured Debt | Equipment Loans and Other Notes Payable
Debt Instrument [Line Items]
Total long-term debt	$ 3,306	3,433
Average interest rate	2.12%
Secured Debt | Equipment Loans and Other Notes Payable | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	1.42%
Secured Debt | Equipment Loans and Other Notes Payable | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	4.64%
Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Total long-term debt	$ 1,129	1,129
Secured Debt | Special Facility Revenue Bonds | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	2.25%
Secured Debt | Special Facility Revenue Bonds | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	5.38%
Unsecured Debt
Debt Instrument [Line Items]
Total long-term debt	$ 5,679	5,996
Unsecured Debt | Payroll Support Program Promissory Note One, CARES Act
Debt Instrument [Line Items]
Total long-term debt	1,765	1,765
Unsecured Debt | Payroll Support Program Promissory Note Two, CARES Act
Debt Instrument [Line Items]
Total long-term debt	1,035	1,035
Unsecured Debt | Payroll Support Program Promissory Note Three, CARES Act
Debt Instrument [Line Items]
Total long-term debt	946	946
Unsecured Debt | 6.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,000	1,000
Fixed interest rate per annum	6.50%
Unsecured Debt | 5.000% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 433	750
Fixed interest rate per annum	5.00%
Unsecured Debt | 3.75% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 500	500
Fixed interest rate per annum	3.75%
American Airlines, Inc.
Debt Instrument [Line Items]
Less: Total unamortized debt discount, premium and issuance costs	$ 412	428
Less: Current maturities	1,777	1,568
Long-term debt, net of current maturities	29,664	29,789
American Airlines, Inc. | Secured Debt
Debt Instrument [Line Items]
Total long-term debt	31,853	31,785
American Airlines, Inc. | Secured Debt | 2013 Revolving Facility
Debt Instrument [Line Items]
Total long-term debt	$ 1,770	1,770
Variable interest rate	2.20%
American Airlines, Inc. | Secured Debt | 2014 Revolving Facility
Debt Instrument [Line Items]
Total long-term debt	$ 1,196	1,208
Variable interest rate	2.20%
American Airlines, Inc. | Secured Debt | December 2016 Credit Facilities
Debt Instrument [Line Items]
Total long-term debt	$ 1,188	1,188
Variable interest rate	2.84%
American Airlines, Inc. | Secured Debt | 11.75% Senior Secured Notes
Debt Instrument [Line Items]
Total long-term debt	$ 2,500	2,500
Fixed interest rate per annum	11.75%
American Airlines, Inc. | Secured Debt | 10.75% Senior Secured Notes, IP Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,000	1,000
Fixed interest rate per annum	10.75%
American Airlines, Inc. | Secured Debt | 10.75% Senior Secured Notes, LGA/DCA Notes
Debt Instrument [Line Items]
Total long-term debt	$ 200	200
Fixed interest rate per annum	10.75%
American Airlines, Inc. | Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 3,500	3,500
Fixed interest rate per annum	5.50%
American Airlines, Inc. | Secured Debt | 5.75% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 3,000	3,000
Fixed interest rate per annum	5.75%
American Airlines, Inc. | Secured Debt | AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Total long-term debt	$ 3,500	3,500
Variable interest rate	5.50%
American Airlines, Inc. | Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Total long-term debt	$ 9,564	9,357
Average interest rate	3.81%
American Airlines, Inc. | Secured Debt | Enhanced Equipment Trust Certificates (EETC) | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	2.88%
American Airlines, Inc. | Secured Debt | Enhanced Equipment Trust Certificates (EETC) | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	7.13%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable
Debt Instrument [Line Items]
Total long-term debt	$ 3,306	3,433
Average interest rate	2.12%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	1.42%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	4.64%
American Airlines, Inc. | Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Total long-term debt	$ 1,129	$ 1,129
American Airlines, Inc. | Secured Debt | Special Facility Revenue Bonds | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	2.25%
American Airlines, Inc. | Secured Debt | Special Facility Revenue Bonds | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	5.38%