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Special Items, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |
Operating special items, net | $ 0 | $ 6 | $ 70 | $ 19
Mark-to-market adjustments on equity investments, net | 5 | 11 | 51 | 11
Debt refinancing and extinguishment | 7 | 17 | 7 | 34
Nonoperating special items, net | 12 | 28 | 58 | 45
American Airlines, Inc. |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Mark-to-market adjustments on equity investments, net | 5 | 11 | 51 | 11
Debt refinancing and extinguishment | 7 | 17 | 7 | 34
Nonoperating special items, net | 12 | 28 | 58 | 45
Mainline operating special items, net |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Labor contract expenses | 0 | 0 | 57 | 0
Severance expenses | 0 | 0 | 13 | 21
Other operating special items, net | 0 | 0 | 0 | (8)
Operating special items, net | 0 | 0 | 70 | 13
Mainline operating special items, net | American Airlines, Inc. |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Labor contract expenses | 0 | 0 | 57 | 0
Severance expenses | 0 | 0 | 13 | 21
Other operating special items, net | 0 | 0 | 0 | (8)
Operating special items, net | 0 | 0 | 70 | 13
Regional operating special items, net |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Operating special items, net | $ 0 | $ 6 | $ 0 | $ 6

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