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ACCUMULATED OTHER COMPREHENSIVE LOSS
 6 Months Ended
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
ACCUMULATED OTHER COMPREHENSIVE LOSS ACCUMULATED OTHER COMPREHENSIVE LOSS
Components of accumulated other comprehensive loss
(in millions)Pension and Other Benefit LiabilitiesOtherTax EffectTotal
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.