EMPLOYEE BENEFIT PLANS - Schedule of Other Changes in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Pension expense (income) | ||
| Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Before Tax [Roll Forward] | ||
| Other comprehensive income (loss), beginning balance | $ (9) | $ 33 |
| Net gain (loss) arising during period | 17 | 51 |
| Actuarial loss (gain) | (27) | (9) |
| Curtailment loss recognized | 0 | 0 |
| Other comprehensive income (loss), ending balance | 1 | (9) |
| Post-Retirement Plan | ||
| Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Before Tax [Roll Forward] | ||
| Other comprehensive income (loss), beginning balance | (12) | (12) |
| Net gain (loss) arising during period | (2) | 1 |
| Prior Service credit (cost) arising during period | 0 | 0 |
| Actuarial loss (gain) | (1) | (1) |
| Prior service cost | 0 | 0 |
| Other comprehensive income (loss), ending balance | $ (8) | $ (12) |
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- Definition Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Before Tax No definition available.
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- Definition Defined Benefit Plan, Prior Service Credit Recognition No definition available.
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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss), recognized immediately as component of net periodic benefit (cost) credit, for change in value of benefit obligation or plan assets from experience different from that assumed, change in actuarial assumption, or consequence of temporarily deviating from substantive plan. Includes, but is not limited to, amount in excess of 10 percent of greater of fair value of plan assets or benefit obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax, of 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). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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