Debt - 2023 Credit Facilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 04, 2023
Term Loan | Credit Facility 2023 | Base Rate
Line of Credit Facility [Line Items]
Floor interest rate		1.00%
Term Loan | Credit Facility 2023 | Base Rate | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate		1.00%
Term Loan | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Floor interest rate		0.00%
Term Loan | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate		0.00%
Term Loan | Credit Facility 2023 | Secured Debt | Base Rate
Line of Credit Facility [Line Items]
Interest rate margin		1.25%
Term Loan | Credit Facility 2023 | Secured Debt | Base Rate | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		1.25%
Term Loan | Credit Facility 2023 | Secured Debt | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Interest rate margin	2.25%	2.25%
Term Loan | Credit Facility 2023 | Secured Debt | Secured Overnight Financing Rate (SOFR) | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin	2.25%	2.25%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	$ 3,397
Revolving Credit Facility | American Airlines, Inc.
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	3,397
Revolving Credit Facility | Credit Facility 2023
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	924
Revolving Credit Facility | Credit Facility 2023 | American Airlines, Inc.
Line of Credit Facility [Line Items]
Line of credit facility, remaining borrowing capacity	924
Revolving Credit Facility | Credit Facility 2023 | Base Rate
Line of Credit Facility [Line Items]
Floor interest rate		1.00%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate		1.00%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | Interest Rate Margin One
Line of Credit Facility [Line Items]
Interest rate margin		2.00%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | Interest Rate Margin One | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		2.00%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | Interest Rate Margin Two
Line of Credit Facility [Line Items]
Interest rate margin		2.25%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | Interest Rate Margin Two | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		2.25%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | Interest Rate Margin Three
Line of Credit Facility [Line Items]
Interest rate margin		2.50%
Revolving Credit Facility | Credit Facility 2023 | Base Rate | Interest Rate Margin Three | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		2.50%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Floor interest rate		0.00%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate		0.00%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin One
Line of Credit Facility [Line Items]
Interest rate margin		3.00%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin One | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		3.00%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin Two
Line of Credit Facility [Line Items]
Interest rate margin		3.25%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin Two | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		3.25%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin Three
Line of Credit Facility [Line Items]
Interest rate margin		3.50%
Revolving Credit Facility | Credit Facility 2023 | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin Three | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin		3.50%
Revolving Credit Facility | Credit Facility 2023 | Secured Debt
Line of Credit Facility [Line Items]
Long-term line of credit	0
Revolving Credit Facility | Credit Facility 2023 | Secured Debt | American Airlines, Inc.
Line of Credit Facility [Line Items]
Long-term line of credit	$ 0