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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Accumulated benefit obligations in excess of fair value of plan assets (Details) - Pension plans - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Accumulated benefit obligations in excess of the fair value of plan assets |  |
Accumulated Benefit Obligations | $ 4,882 | $ 5,165
Fair value of plan assets | $ 4,072 | $ 4,379

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