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Special Items, Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Restructuring Cost and Reserve [Line Items] |  |  |
Operating special items, net | $ 979 | $ 198 | $ (4,455)
Mark-to-market adjustments on equity and other investments, net | 82 | 71 | 31
Debt refinancing, extinguishment and other, net | 280 | 3 | 29
Nonoperating special items, net | 362 | 74 | 60
Income tax special items, net | 0 | (9) | 0
Allied Pilots Association |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Collective bargaining agreement, one-time payment | 754 |  |
Adjustments to other benefit-related items | 235 |  |
Mainline |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Labor contract expenses | 989 | 0 | 0
Severance expenses | 23 | 0 | 168
Fleet impairment | 0 | 149 | 0
Litigation reserve adjustments | 0 | 37 | (19)
PSP financial assistance | 0 | 0 | (4,162)
Other operating special items, net | (41) | 7 | 7
Operating special items, net | 971 | 193 | (4,006)
Regional Carrier |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance expenses | 0 | 0 | 2
Fleet impairment | 0 | 0 | 27
PSP financial assistance | 0 | 0 | (539)
Other operating special items, net | 8 | 5 | 0
Operating special items, net | 8 | 5 | (449)
Regional pilot retention program | 0 | 0 | 61
American Airlines, Inc. |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Operating special items, net | 971 | 193 | (4,518)
Mark-to-market adjustments on equity and other investments, net | 82 | 71 | 31
Debt refinancing, extinguishment and other, net | 280 | 1 | 29
Nonoperating special items, net | 362 | 72 | 60
Income tax special items, net | 0 | (9) | 0
American Airlines, Inc. | Allied Pilots Association |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Collective bargaining agreement, one-time payment | 754 |  |
Adjustments to other benefit-related items | 235 |  |
American Airlines, Inc. | Mainline |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Labor contract expenses | 989 | 0 | 0
Severance expenses | 23 | 0 | 168
Fleet impairment | 0 | 149 | 0
Litigation reserve adjustments | 0 | 37 | (19)
PSP financial assistance | 0 | 0 | (4,162)
Other operating special items, net | (41) | 7 | 7
Operating special items, net | 971 | 193 | (4,006)
American Airlines, Inc. | Regional Carrier |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Fleet impairment | 0 | 0 | 27
PSP financial assistance | 0 | 0 | (539)
Operating special items, net | $ 0 | $ 0 | $ (512)

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