Debt - Components of Long-Term Debt (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Mar. 24, 2021
Debt Instrument [Line Items]
Total long-term debt	$ 32,759,000,000	$ 35,289,000,000
Less: Total unamortized debt discount, premium and issuance costs	363,000,000	386,000,000
Less: Current maturities	3,501,000,000	3,059,000,000
Long-term debt, net of current maturities	28,895,000,000	31,844,000,000
Secured Debt
Debt Instrument [Line Items]
Total long-term debt	27,526,000,000	30,043,000,000
Secured Debt | 2013 Credit Facilities
Debt Instrument [Line Items]
Total long-term debt	$ 990,000,000	1,752,000,000
Variable interest rate	8.60%
Secured Debt | 2014 Credit Facilities
Debt Instrument [Line Items]
Total long-term debt	$ 1,183,000,000	1,196,000,000
Variable interest rate	7.32%
Secured Debt | Credit Facility 2023
Debt Instrument [Line Items]
Total long-term debt	$ 1,100,000,000	0
Variable interest rate	8.87%
Secured Debt | Senior Notes 11.75% Due 2025
Debt Instrument [Line Items]
Total long-term debt	$ 0	2,500,000,000
Fixed interest rate per annum	11.75%
Secured Debt | Senior Secured IP Notes 10.75% Due 2026
Debt Instrument [Line Items]
Total long-term debt	$ 1,000,000,000	1,000,000,000
Fixed interest rate per annum	10.75%
Secured Debt | Senior Secured LGA/DCA Notes 10.75%
Debt Instrument [Line Items]
Total long-term debt	$ 200,000,000	200,000,000
Fixed interest rate per annum	10.75%
Secured Debt | 7.25% Senior Secured Notes
Debt Instrument [Line Items]
Total long-term debt	$ 750,000,000	0
Fixed interest rate per annum	7.25%
Secured Debt | 8.50% Senior Secured Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,000,000,000	0
Fixed interest rate per annum	8.50%
Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 2,917,000,000	3,500,000,000
Fixed interest rate per annum	5.50%
Secured Debt | 5.75% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 3,000,000,000	3,000,000,000
Fixed interest rate per annum	5.75%
Secured Debt | AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Total long-term debt	$ 3,150,000,000	3,500,000,000	$ 3,500,000,000
Variable interest rate	10.43%
Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Total long-term debt	$ 7,657,000,000	9,175,000,000
Average interest rate	3.60%
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	5.90%
Secured Debt | Equipment Loans and Other Notes Payable
Debt Instrument [Line Items]
Total long-term debt	$ 3,612,000,000	3,170,000,000
Average interest rate	6.98%
Secured Debt | Equipment Loans and Other Notes Payable | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	2.55%
Secured Debt | Equipment Loans and Other Notes Payable | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	8.90%
Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Total long-term debt	$ 967,000,000	1,050,000,000
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	$ 5,233,000,000	5,246,000,000
Unsecured Debt | PSP1 Promissory Note
Debt Instrument [Line Items]
Total long-term debt	1,757,000,000	1,757,000,000
Unsecured Debt | PSP2 Promissory Note
Debt Instrument [Line Items]
Total long-term debt	1,030,000,000	1,030,000,000
Unsecured Debt | PSP3 Promissory Note
Debt Instrument [Line Items]
Total long-term debt	959,000,000	959,000,000
Unsecured Debt | Convertible Senior Notes 6.50% Due 2025
Debt Instrument [Line Items]
Total long-term debt	$ 1,000,000,000	1,000,000,000
Fixed interest rate per annum	6.50%
Unsecured Debt | Senior Notes 3.75% Matures 2025
Debt Instrument [Line Items]
Total long-term debt	$ 487,000,000	500,000,000
Fixed interest rate per annum	3.75%
American Airlines, Inc.
Debt Instrument [Line Items]
Total long-term debt	$ 27,526,000,000
Less: Total unamortized debt discount, premium and issuance costs	349,000,000	364,000,000
Less: Current maturities	3,501,000,000	3,059,000,000
Long-term debt, net of current maturities	23,676,000,000	26,620,000,000
American Airlines, Inc. | Secured Debt
Debt Instrument [Line Items]
Total long-term debt	27,526,000,000	30,043,000,000
American Airlines, Inc. | Secured Debt | 2013 Credit Facilities
Debt Instrument [Line Items]
Total long-term debt	$ 990,000,000	1,752,000,000
Variable interest rate	8.60%
American Airlines, Inc. | Secured Debt | 2014 Credit Facilities
Debt Instrument [Line Items]
Total long-term debt	$ 1,183,000,000	1,196,000,000
Variable interest rate	7.32%
American Airlines, Inc. | Secured Debt | Credit Facility 2023
Debt Instrument [Line Items]
Total long-term debt	$ 1,100,000,000	0
Variable interest rate	8.87%
American Airlines, Inc. | Secured Debt | Senior Notes 11.75% Due 2025
Debt Instrument [Line Items]
Total long-term debt	$ 0	2,500,000,000
Fixed interest rate per annum	11.75%
American Airlines, Inc. | Secured Debt | Senior Secured IP Notes 10.75% Due 2026
Debt Instrument [Line Items]
Total long-term debt	$ 1,000,000,000	1,000,000,000
Fixed interest rate per annum	10.75%
American Airlines, Inc. | Secured Debt | Senior Secured LGA/DCA Notes 10.75%
Debt Instrument [Line Items]
Total long-term debt	$ 200,000,000	200,000,000
Fixed interest rate per annum	10.75%
American Airlines, Inc. | Secured Debt | 7.25% Senior Secured Notes
Debt Instrument [Line Items]
Total long-term debt	$ 750,000,000	0
Fixed interest rate per annum	7.25%
American Airlines, Inc. | Secured Debt | 8.50% Senior Secured Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,000,000,000	0
Fixed interest rate per annum	8.50%
American Airlines, Inc. | Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 2,917,000,000	3,500,000,000
Fixed interest rate per annum	5.50%
American Airlines, Inc. | Secured Debt | 5.75% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 3,000,000,000	3,000,000,000
Fixed interest rate per annum	5.75%
American Airlines, Inc. | Secured Debt | AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Total long-term debt	$ 3,150,000,000	3,500,000,000
Variable interest rate	10.43%
American Airlines, Inc. | Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Total long-term debt	$ 7,657,000,000	9,175,000,000
Average interest rate	3.60%
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	5.90%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable
Debt Instrument [Line Items]
Total long-term debt	$ 3,612,000,000	3,170,000,000
Average interest rate	6.98%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable | Minimum
Debt Instrument [Line Items]
Fixed interest rate per annum	2.55%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable | Maximum
Debt Instrument [Line Items]
Fixed interest rate per annum	8.90%
American Airlines, Inc. | Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Total long-term debt	$ 967,000,000	$ 1,050,000,000
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%
American Airlines, Inc. | Unsecured Debt | Convertible Senior Notes 6.50% Due 2025
Debt Instrument [Line Items]
Fixed interest rate per annum	6.50%
American Airlines, Inc. | Unsecured Debt | Senior Notes 3.75% Matures 2025
Debt Instrument [Line Items]
Fixed interest rate per annum	3.75%