Debt - Components of Long-Term Debt (Details) - USD ($)	Dec. 31, 2024	Dec. 18, 2024	Dec. 31, 2023	Mar. 24, 2021
Debt Instrument [Line Items]
Total long-term debt	$ 30,118,000,000		$ 32,759,000,000
Less: Total unamortized debt discount, premium and issuance costs	305,000,000		363,000,000
Less: Current maturities	5,196,000,000		3,501,000,000
Long-term debt, net of current maturities	24,617,000,000		28,895,000,000
Secured Debt
Debt Instrument [Line Items]
Total long-term debt	25,372,000,000		27,526,000,000
Secured Debt | Credit Facility 2013
Debt Instrument [Line Items]
Total long-term debt	$ 980,000,000	$ 980,000,000	990,000,000
Variable interest rate	6.65%
Secured Debt | Credit Facility 2014
Debt Instrument [Line Items]
Total long-term debt	$ 1,171,000,000		1,183,000,000
Variable interest rate	6.17%
Secured Debt | Credit Facility 2023
Debt Instrument [Line Items]
Total long-term debt	$ 1,089,000,000		1,100,000,000
Variable interest rate	6.96%
Secured Debt | Senior Secured IP Notes 10.75% Due 2026
Debt Instrument [Line Items]
Total long-term debt	$ 781,000,000		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	$ 156,000,000		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		750,000,000
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		1,000,000,000
Fixed interest rate per annum	8.50%
Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,750,000,000		2,917,000,000
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	$ 2,450,000,000		3,150,000,000	$ 3,500,000,000
Variable interest rate	9.63%
Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Total long-term debt	$ 7,271,000,000		7,657,000,000
Average interest rate	3.84%
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	7.15%
Secured Debt | Equipment Loans and Other Notes Payable
Debt Instrument [Line Items]
Total long-term debt	$ 4,094,000,000		3,612,000,000
Average interest rate	6.17%
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	7.25%
Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Total long-term debt	$ 880,000,000		967,000,000
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	$ 4,746,000,000		5,233,000,000
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	$ 0		487,000,000
Fixed interest rate per annum	3.75%
American Airlines, Inc.
Debt Instrument [Line Items]
Total long-term debt	$ 25,372,000,000
Less: Total unamortized debt discount, premium and issuance costs	300,000,000		349,000,000
Less: Current maturities	4,196,000,000		3,501,000,000
Long-term debt, net of current maturities	20,876,000,000		23,676,000,000
American Airlines, Inc. | Secured Debt
Debt Instrument [Line Items]
Total long-term debt	25,372,000,000		27,526,000,000
American Airlines, Inc. | Secured Debt | Credit Facility 2013
Debt Instrument [Line Items]
Total long-term debt	$ 980,000,000	$ 980,000,000	990,000,000
Variable interest rate	6.65%
American Airlines, Inc. | Secured Debt | Credit Facility 2014
Debt Instrument [Line Items]
Total long-term debt	$ 1,171,000,000		1,183,000,000
Variable interest rate	6.17%
American Airlines, Inc. | Secured Debt | Credit Facility 2023
Debt Instrument [Line Items]
Total long-term debt	$ 1,089,000,000		1,100,000,000
Variable interest rate	6.96%
American Airlines, Inc. | Secured Debt | Senior Secured IP Notes 10.75% Due 2026
Debt Instrument [Line Items]
Total long-term debt	$ 781,000,000		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	$ 156,000,000		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		750,000,000
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		1,000,000,000
Fixed interest rate per annum	8.50%
American Airlines, Inc. | Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt	$ 1,750,000,000		2,917,000,000
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	$ 2,450,000,000		3,150,000,000
Variable interest rate	9.63%
American Airlines, Inc. | Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Total long-term debt	$ 7,271,000,000		7,657,000,000
Average interest rate	3.84%
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	7.15%
American Airlines, Inc. | Secured Debt | Equipment Loans and Other Notes Payable
Debt Instrument [Line Items]
Total long-term debt	$ 4,094,000,000		3,612,000,000
Average interest rate	6.17%
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	7.25%
American Airlines, Inc. | Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Total long-term debt	$ 880,000,000		$ 967,000,000
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%