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EMPLOYEE BENEFIT PLANS - Balance Sheet Position (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position |  |
Noncurrent liabilities | $ (3,601) | $ (3,707)
Pension Benefits |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position |  |
Prepaid pension assets | 22 | 27
Current liabilities | (9) | (9)
Noncurrent liabilities | (158) | (108)
Funded status at end of period | (145) | (90)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax |  |
Net actuarial (loss)/gain | (6,474) | (6,444)
Prior service credit | 0 | 0
Total accumulated other comprehensive loss, pre-tax | (6,474) | (6,444)
Other Postretirement and Postemployment Benefits |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position |  |
Prepaid pension assets | 0 | 0
Current liabilities | (404) | (369)
Noncurrent liabilities | (3,066) | (3,224)
Funded status at end of period | (3,470) | (3,593)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax |  |
Net actuarial (loss)/gain | (162) | (155)
Prior service credit | 1 | 18
Total accumulated other comprehensive loss, pre-tax | $ (161) | $ (137)

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