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Debt - AAdvantage Financing (Details) - USD ($) |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 20, 2026 | Dec. 31, 2023 | Jul. 31, 2023 | Jul. 20, 2023 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Mar. 24, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  | $ 32,759,000,000 |  |  |  | $ 32,759,000,000 | $ 35,289,000,000 |
American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  | 27,526,000,000 |  |  |  | 27,526,000,000 |  |
Secured Debt |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  | 27,526,000,000 |  |  |  | 27,526,000,000 | 30,043,000,000 |
Secured Debt | American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  | $ 27,526,000,000 |  |  |  | $ 27,526,000,000 | 30,043,000,000 |
5.50% Senior Notes | Senior Notes |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate principal issued |  |  |  |  |  |  |  | $ 3,500,000,000
Fixed interest rate per annum |  |  |  |  |  |  |  | 5.50%
Quarterly installments |  |  |  | $ 292,000,000 |  |  |  |
5.50% Senior Notes | Secured Debt |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Fixed interest rate per annum |  | 5.50% |  |  |  | 5.50% |  |
Total long-term debt |  | $ 2,917,000,000 |  |  |  | $ 2,917,000,000 | 3,500,000,000 |
5.50% Senior Notes | Secured Debt | American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Fixed interest rate per annum |  | 5.50% |  |  |  | 5.50% |  |
Total long-term debt |  | $ 2,917,000,000 |  |  |  | $ 2,917,000,000 | 3,500,000,000 |
5.75% Senior Notes | Senior Notes |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate principal issued |  |  |  |  |  |  |  | $ 3,000,000,000
Fixed interest rate per annum |  |  |  |  |  |  |  | 5.75%
5.75% Senior Notes | Senior Notes | Forecast |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Quarterly installments | $ 250,000,000 |  |  |  |  |  |  |
5.75% Senior Notes | Secured Debt |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Fixed interest rate per annum |  | 5.75% |  |  |  | 5.75% |  |
Total long-term debt |  | $ 3,000,000,000 |  |  |  | $ 3,000,000,000 | 3,000,000,000 |
5.75% Senior Notes | Secured Debt | American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Fixed interest rate per annum |  | 5.75% |  |  |  | 5.75% |  |
Total long-term debt |  | $ 3,000,000,000 |  |  |  | $ 3,000,000,000 | 3,000,000,000 |
AAdvantage Term Loan Facility | Senior Notes |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Quarterly installments |  |  | $ 175,000,000 |  |  |  |  |
AAdvantage Term Loan Facility | Secured Debt |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  | $ 3,150,000,000 |  |  |  | $ 3,150,000,000 | 3,500,000,000 | $ 3,500,000,000
Redemption price percentage |  |  |  |  |  | 100.00% |  |
Variable interest rate |  | 10.43% |  |  |  | 10.43% |  |
Mandatory prepayment amount, threshold net proceeds from pre-paid frequent flyer |  |  |  |  |  |  |  | $ 505,000,000
AAdvantage Term Loan Facility | Secured Debt | American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total long-term debt |  | $ 3,150,000,000 |  |  |  | $ 3,150,000,000 | $ 3,500,000,000 |
Variable interest rate |  | 10.43% |  |  |  | 10.43% |  |
AAdvantage Term Loan Facility | Secured Debt | Base Rate | American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Floor interest rate |  |  |  |  | 0.00% |  |  |
Interest rate margin |  |  |  |  | 3.75% |  |  |
AAdvantage Term Loan Facility | Secured Debt | SOFR | American Airlines, Inc. |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Floor interest rate |  |  |  |  | 0.75% |  |  |
Interest rate margin |  | 4.75% |  |  | 4.75% |  |  |
Interest rate adjustment |  |  |  |  | 0.26161% |  |  |

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