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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 3 Months Ended
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Mar. 31, 2023
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, 2023 | $ | (6,624) |  | $ | 41 |  | $ | 782 |  | $ | (5,801) |
Reclassifications into earnings(1) | 62 |  | — |  | (15) |  | 47 |
Balance at March 31, 2023 | $ | (6,562) |  | $ | 41 |  | $ | 767 |  | $ | (5,754) |
Balance at January 1, 2022 | $ | (8,355) |  | $ | 41 |  | $ | 1,184 |  | $ | (7,130) |
Reclassifications into earnings(1) | 77 |  | — |  | (18) |  | 59 |
Balance at March 31, 2022 | $ | (8,278) |  | $ | 41 |  | $ | 1,166 |  | $ | (7,071) |
(1)Amounts reclassified from accumulated other comprehensive loss for pension and other benefit liabilities are recorded in pension and related (expense)/benefit in non-operating expense in our income statement.

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