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SPECIAL ITEMS (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Unusual or Infrequent Items, or Both [Abstract] |
Special items - fleet transition and other |
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in millions) | 2025 |  | 2024 |  | 2025 |  | 2024
Operating Expenses |  |  |  |  |  |  |
Integration costs | $ | 53 |  |  | $ | 30 |  |  | $ | 93 |  |  | $ | 38 |
Labor and other | 3 |  |  | 116 |  |  | 54 |  |  | 142 |
Special items - operating | $ | 56 |  |  | $ | 146 |  |  | $ | 147 |  |  | $ | 180 |

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- Definition Tabular disclosure of the nature and financial statement effect of an event or transaction that is unusual in nature or infrequent in occurrence, or both. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483613/220-20-50-1 + Details
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