EMPLOYEE BENEFIT PLANS - Unrecognized Net Actuarial (Gain) Loss (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial (gain) loss	$ 717	$ 759
Unrecognized prior service cost (credit)	(1)	(1)
Total	716	758
Post-retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial (gain) loss	19	22
Unrecognized prior service cost (credit)	(18)	(21)
Total	$ 1	$ 1

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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