Debt - Components of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2025	May 28, 2025	Dec. 31, 2024	Mar. 24, 2021
Debt Instrument [Line Items]
Long-term debt	$ 28,594
Total	28,594		$ 30,118
Less: Total unamortized debt discount, premium and issuance costs	314		305
Less: Current maturities	3,641		5,196
Long-term debt, net of current maturities	24,639		24,617
Unsecured Debt
Debt Instrument [Line Items]
Total	4,375		4,746
PSP1 Promissory Note | Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	$ 1,757		1,757
Variable interest rate, long-term debt	5.92%
PSP2 Promissory Note | Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	$ 1,030		1,030
PSP3 Promissory Note | Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	959		959
Convertible Senior Notes 6.50% Due 2025 | Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	$ 0		1,000
Fixed interest rate per annum	6.50%
Senior Unsecured Short Term Loan Facility | Unsecured Debt
Debt Instrument [Line Items]
Short-term debt	$ 629		0
Variable interest rate, short-term debt	6.11%
Secured Debt
Debt Instrument [Line Items]
Long-term debt	$ 24,219		25,372
Secured Debt | Credit Facility 2013
Debt Instrument [Line Items]
Long-term debt	$ 970		980
Variable interest rate, long-term debt	6.00%
Secured Debt | Credit Facility 2014
Debt Instrument [Line Items]
Long-term debt	$ 1,159		1,171
Variable interest rate, long-term debt	5.69%
Secured Debt | Credit Facility 2023
Debt Instrument [Line Items]
Long-term debt	$ 1,078		1,089
Variable interest rate, long-term debt	6.26%
Secured Debt | Senior Secured IP Notes 10.75% Due 2026
Debt Instrument [Line Items]
Long-term debt	$ 0		781
Fixed interest rate per annum	10.75%
Secured Debt | Senior Secured LGA/DCA Notes 10.75%
Debt Instrument [Line Items]
Long-term debt	$ 0		156
Fixed interest rate per annum	10.75%
Secured Debt | 7.25% Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt	$ 750		750
Fixed interest rate per annum	7.25%
Secured Debt | 8.50% Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,000		1,000
Fixed interest rate per annum	8.50%
Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 583		1,750
Fixed interest rate per annum	5.50%
Secured Debt | 5.75% Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 3,000		3,000
Fixed interest rate per annum	5.75%
Secured Debt | 2021 AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Long-term debt	$ 2,264		2,450
Variable interest rate, long-term debt	6.13%
Secured Debt | 2025 AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Long-term debt	$ 995		0
Variable interest rate, long-term debt	7.13%
Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Long-term debt	$ 6,912		7,271
Average interest rate	3.95%
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]
Long-term debt	$ 4,719		4,094
Average interest rate	5.57%
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	6.56%
Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Long-term debt	$ 789		880
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%
American Airlines, Inc.
Debt Instrument [Line Items]
Long-term debt	$ 24,848
Total	24,848		25,372
Less: Total unamortized debt discount, premium and issuance costs	313		300
Less: Current maturities	3,641		4,196
Long-term debt, net of current maturities	20,894		20,876
American Airlines, Inc. | Senior Unsecured Short Term Loan Facility | Unsecured Debt
Debt Instrument [Line Items]
Short-term debt	$ 629		0
American Airlines, Inc. | Senior Unsecured Short Term Loan Facility | Unsecured Debt
Debt Instrument [Line Items]
Variable interest rate, short-term debt	6.11%
American Airlines, Inc. | Secured Debt
Debt Instrument [Line Items]
Long-term debt	$ 24,219		25,372
American Airlines, Inc. | Secured Debt | Credit Facility 2013
Debt Instrument [Line Items]
Long-term debt	$ 970		980
Variable interest rate, long-term debt	6.00%
American Airlines, Inc. | Secured Debt | Credit Facility 2014
Debt Instrument [Line Items]
Long-term debt	$ 1,159		1,171
Variable interest rate, long-term debt	5.69%
American Airlines, Inc. | Secured Debt | Credit Facility 2023
Debt Instrument [Line Items]
Long-term debt	$ 1,078		1,089
Variable interest rate, long-term debt	6.26%
American Airlines, Inc. | Secured Debt | Senior Secured IP Notes 10.75% Due 2026
Debt Instrument [Line Items]
Long-term debt	$ 0		781
Fixed interest rate per annum	10.75%
American Airlines, Inc. | Secured Debt | Senior Secured LGA/DCA Notes 10.75%
Debt Instrument [Line Items]
Long-term debt	$ 0		156
Fixed interest rate per annum	10.75%
American Airlines, Inc. | Secured Debt | 7.25% Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt	$ 750		750
Fixed interest rate per annum	7.25%
American Airlines, Inc. | Secured Debt | 8.50% Senior Secured Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,000		1,000
Fixed interest rate per annum	8.50%
American Airlines, Inc. | Secured Debt | 5.50% Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 583		1,750
Fixed interest rate per annum	5.50%
American Airlines, Inc. | Secured Debt | 5.75% Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 3,000		3,000
Fixed interest rate per annum	5.75%
American Airlines, Inc. | Secured Debt | 2021 AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Long-term debt	$ 2,264		2,450	$ 3,500
Variable interest rate, long-term debt	6.13%
American Airlines, Inc. | Secured Debt | 2025 AAdvantage Term Loan Facility
Debt Instrument [Line Items]
Long-term debt	$ 995	$ 1,000	0
Variable interest rate, long-term debt	7.13%
American Airlines, Inc. | Secured Debt | Enhanced Equipment Trust Certificates (EETC)
Debt Instrument [Line Items]
Long-term debt	$ 6,912		7,271
Average interest rate	3.95%
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]
Long-term debt	$ 4,719		4,094
Average interest rate	5.57%
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	6.56%
American Airlines, Inc. | Secured Debt | Special Facility Revenue Bonds
Debt Instrument [Line Items]
Long-term debt	$ 789		$ 880
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%