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Debt - 2013 and 2014 Credit Facilities, April 2016 Revolving Facility and 2023 Term Loan Facility (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2023 | Mar. 31, 2023 | Feb. 28, 2023 | Dec. 31, 2023 | Oct. 13, 2026 | Oct. 11, 2024 | Feb. 15, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal outstanding or drawn | $ 28,895,000,000 | $ 28,895,000,000 |  |  | $ 28,895,000,000 |  |  |  | $ 31,844,000,000
2013 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility undrawn fee percentage |  |  |  |  | 0.75% |  |  |  |
2023 Term Loan Facility | Secured Debt | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  | 1.00% |  |  |  |  |  |  |
Interest rate margin |  | 2.50% |  |  |  |  |  |  |
2023 Term Loan Facility | Secured Debt | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  | 0.00% |  |  |  |  |  |  |
Interest rate margin | 3.50% | 3.50% |  |  |  |  |  |  |
7.25% Senior Secured Notes | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fixed interest rate per annum | 7.25% | 7.25% |  |  | 7.25% |  |  |  |
7.25% Senior Secured Notes | Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal issued |  |  |  | $ 750,000,000 |  |  |  |  |
Fixed interest rate per annum |  |  |  | 7.25% |  |  |  |  |
Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Annual installment repayment, percent or original principal balance |  |  |  |  | 1.00% |  |  |  |
Term Loan | 2013 Credit Facilities |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, refinanced amount |  |  |  | $ 1,800,000,000 |  |  |  |  |
Term Loan | 2013 Credit Facilities | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  |  | 1.00% |  |  |  |  |
Interest rate margin |  |  |  | 1.75% |  |  |  |  |
Term Loan | 2013 Credit Facilities | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  |  | 0.00% |  |  |  |  |
Interest rate margin | 2.75% |  |  | 2.75% |  |  |  |  |
Term Loan | 2014 Credit Facilities | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 1.00% |  |  |  |  |  |
Interest rate margin |  |  | 0.75% |  |  |  |  |  |
Term Loan | 2014 Credit Facilities | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 0.00% |  |  |  |  |  |
Interest rate margin | 1.75% |  | 1.75% |  |  |  |  |  |
Term Loan | 2023 Term Loan Facility | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 1,100,000,000 | $ 1,100,000,000 |  |  | $ 1,100,000,000 |  |  |  |
Term Loan | Credit Facility 2013, Term Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  | $ 1,000,000,000 |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | $ 563,000,000 | $ 736,000,000 |  |
Revolving Credit Facility | 2013 Credit Facilities | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 1.00% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | Base Rate | Interest Rate Margin One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 2.25% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | Base Rate | Interest Rate Margin Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 2.50% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | Base Rate | Interest Rate Margin Three |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 2.75% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 0.00% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | SOFR | Interest Rate Margin One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 3.25% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | SOFR | Interest Rate Margin Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 3.50% |  |  |  |  |  |
Revolving Credit Facility | 2013 Credit Facilities | SOFR | Interest Rate Margin Three |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 3.75% |  |  |  |  |  |
Revolving Credit Facility | 2014 Credit Facilities | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 1,200,000,000 | 1,600,000,000 |  |
Revolving Credit Facility | April 2016 Revolving Facility | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 342,000,000 | 446,000,000 |  |
Letter of Credit | 2013 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 150,000,000 | 150,000,000 |  |  | 150,000,000 |  |  |  |
Letter of Credit | 2014 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 300,000,000 | 300,000,000 |  |  | 300,000,000 |  |  |  |
American Airlines, Inc. |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Principal outstanding or drawn | $ 23,676,000,000 | $ 23,676,000,000 |  |  | $ 23,676,000,000 |  |  |  | $ 26,620,000,000
American Airlines, Inc. | 2014 Credit Facilities | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 1.00% |  |  |  |  |  |
Interest rate margin |  |  | 0.75% |  |  |  |  |  |
American Airlines, Inc. | 2014 Credit Facilities | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 0.00% |  |  |  |  |  |
Interest rate margin | 1.75% |  | 1.75% |  |  |  |  |  |
American Airlines, Inc. | 2023 Term Loan Facility | Secured Debt | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  | 1.00% |  |  |  |  |  |  |
Interest rate margin |  | 2.50% |  |  |  |  |  |  |
American Airlines, Inc. | 2023 Term Loan Facility | Secured Debt | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  | 0.00% |  |  |  |  |  |  |
Interest rate margin | 3.50% | 3.50% |  |  |  |  |  |  |
American Airlines, Inc. | 7.25% Senior Secured Notes | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fixed interest rate per annum | 7.25% | 7.25% |  |  | 7.25% |  |  |  |
American Airlines, Inc. | 7.25% Senior Secured Notes | Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal issued |  |  |  | $ 750,000,000 |  |  |  | $ 750,000,000 |
Fixed interest rate per annum |  |  |  | 7.25% |  |  |  | 7.25% |
American Airlines, Inc. | Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Annual installment repayment, percent or original principal balance |  |  |  |  | 1.00% |  |  |  |
American Airlines, Inc. | Term Loan | 2013 Credit Facilities |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, refinanced amount |  |  |  | $ 1,800,000,000 |  |  |  |  |
American Airlines, Inc. | Term Loan | 2013 Credit Facilities | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  |  | 1.00% |  |  |  |  |
Interest rate margin |  |  |  | 1.75% |  |  |  |  |
American Airlines, Inc. | Term Loan | 2013 Credit Facilities | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  |  | 0.00% |  |  |  |  |
Interest rate margin | 2.75% |  |  | 2.75% |  |  |  |  |
American Airlines, Inc. | Term Loan | 2023 Term Loan Facility | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 1,100,000,000 | $ 1,100,000,000 |  |  | $ 1,100,000,000 |  |  |  |
American Airlines, Inc. | Term Loan | Credit Facility 2013, Term Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  | $ 1,000,000,000 |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 2,200,000,000 | 2,800,000,000 |  |
American Airlines, Inc. | Revolving Credit Facility | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility undrawn fee percentage |  |  |  |  | 0.75% |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 563,000,000 | 736,000,000 |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | Base Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 1.00% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | Base Rate | Interest Rate Margin One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 2.25% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | Base Rate | Interest Rate Margin Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 2.50% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | Base Rate | Interest Rate Margin Three |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 2.75% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | SOFR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Floor interest rate |  |  | 0.00% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | SOFR | Interest Rate Margin One |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 3.25% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | SOFR | Interest Rate Margin Two |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 3.50% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | SOFR | Interest Rate Margin Three |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate margin |  |  | 3.75% |  |  |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2013 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term line of credit | 0 | 0 |  |  | $ 0 |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2014 Credit Facilities |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term line of credit | 0 | 0 |  |  | 0 |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | 2014 Credit Facilities | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | 1,200,000,000 | 1,600,000,000 |  |
American Airlines, Inc. | Revolving Credit Facility | 2014 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term line of credit | 0 | 0 |  |  | 0 |  |  |  |
American Airlines, Inc. | Revolving Credit Facility | April 2016 Revolving Facility | Forecast |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | $ 342,000,000 | $ 446,000,000 |  |
American Airlines, Inc. | Revolving Credit Facility | April 2016 Revolving Facility | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term line of credit | 0 | 0 |  |  | 0 |  |  |  |
American Airlines, Inc. | Letter of Credit | 2013 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 150,000,000 | 150,000,000 |  |  | 150,000,000 |  |  |  |
American Airlines, Inc. | Letter of Credit | 2014 Credit Facilities | Secured Debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 300,000,000 | $ 300,000,000 |  |  | $ 300,000,000 |  |  |  |

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