Debt - 2013 Credit Facilities (Details) - USD ($)	Dec. 31, 2024	Dec. 19, 2024	Jun. 04, 2024	Dec. 18, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Total long-term debt	$ 30,118,000,000				$ 32,759,000,000
Covenant terms, minimum aggregate liquidity required	2,000,000,000.0
American Airlines, Inc.
Line of Credit Facility [Line Items]
Total long-term debt	25,372,000,000
Secured Debt
Line of Credit Facility [Line Items]
Total long-term debt	25,372,000,000				27,526,000,000
Secured Debt | American Airlines, Inc.
Line of Credit Facility [Line Items]
Total long-term debt	25,372,000,000				27,526,000,000
Credit Facility 2013 | Secured Debt
Line of Credit Facility [Line Items]
Total long-term debt	980,000,000			$ 980,000,000	990,000,000
Covenant terms, minimum aggregate liquidity required				2,200,000,000
Credit Facility 2013 | Secured Debt | American Airlines, Inc.
Line of Credit Facility [Line Items]
Total long-term debt	$ 980,000,000			980,000,000	$ 990,000,000
Covenant terms, minimum aggregate liquidity required				$ 2,200,000,000
Credit Facility 2013, Tenth Amendment | Secured Debt
Line of Credit Facility [Line Items]
Interest rate margin	2.25%
Covenant terms, minimum aggregate liquidity required		$ 2,000,000,000
Aggregate principal issued		980,000,000
Credit Facility 2013, Tenth Amendment | Secured Debt | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin	2.25%
Covenant terms, minimum aggregate liquidity required		2,000,000,000
Aggregate principal issued		$ 980,000,000
Credit Facility 2013, Tenth Amendment | Secured Debt | Base Rate
Line of Credit Facility [Line Items]
Floor interest rate		1.00%
Interest rate margin		1.25%
Credit Facility 2013, Tenth Amendment | Secured Debt | Base Rate | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate		1.00%
Interest rate margin		1.25%
Credit Facility 2013, Tenth Amendment | Secured Debt | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Floor interest rate		0.00%
Interest rate margin		2.25%
Credit Facility 2013, Tenth Amendment | Secured Debt | Secured Overnight Financing Rate (SOFR) | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate		0.00%
Interest rate margin		2.25%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 500,000,000
Long-term line of credit	$ 0
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | American Airlines, Inc.
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 500,000,000
Long-term line of credit	$ 0
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | Base Rate
Line of Credit Facility [Line Items]
Floor interest rate			1.00%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | Base Rate | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate			1.00%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | Base Rate | Interest Rate Margin One
Line of Credit Facility [Line Items]
Interest rate margin			2.00%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | 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 2013 | Secured Debt | Base Rate | Interest Rate Margin Two
Line of Credit Facility [Line Items]
Interest rate margin			2.25%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | 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 2013 | Secured Debt | Base Rate | Interest Rate Margin Three
Line of Credit Facility [Line Items]
Interest rate margin			2.50%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | 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 2013 | Secured Debt | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Floor interest rate			0.00%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | Secured Overnight Financing Rate (SOFR) | American Airlines, Inc.
Line of Credit Facility [Line Items]
Floor interest rate			0.00%
Revolving Credit Facility | Credit Facility 2013 | Secured Debt | 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 2013 | Secured Debt | 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 2013 | Secured Debt | 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 2013 | Secured Debt | 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 2013 | Secured Debt | 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 2013 | Secured Debt | Secured Overnight Financing Rate (SOFR) | Interest Rate Margin Three | American Airlines, Inc.
Line of Credit Facility [Line Items]
Interest rate margin			3.50%
Letter of Credit | Credit Facility 2013 | Secured Debt
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 100,000,000
Letter of Credit | Credit Facility 2013 | Secured Debt | American Airlines, Inc.
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 100,000,000