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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 6 Months Ended
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Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Components of Accumulated Other Comprehensive Loss |
Components of accumulated other comprehensive loss
(in millions) | Pension and Other Benefit Liabilities | Other | Tax Effect | Total
Balance at January 1, 2025 | $ | (5,557) |  | $ | 42 |  | $ | 536 |  | $ | (4,979) |
Changes in value | — |  | (1) |  | — |  | (1) |
Reclassifications into earnings(1) | 105 |  | — |  | (24) |  | 81 |
Balance at June 30, 2025 | $ | (5,452) |  | $ | 41 |  | $ | 512 |  | $ | (4,899) |
Balance at January 1, 2024 | $ | (6,681) |  | $ | 40 |  | $ | 796 |  | $ | (5,845) |
Changes in value | — |  | 3 |  | — |  | 3 |
Reclassifications into earnings(1) | 133 |  | — |  | (31) |  | 102 |
Balance at June 30, 2024 | $ | (6,548) |  | $ | 43 |  | $ | 765 |  | $ | (5,740) |
(1)Amounts reclassified from accumulated other comprehensive loss for pension and other benefit liabilities are recorded in miscellaneous, net in non-operating expense in our income statement.

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