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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2030
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company contributions | $ 1,000,000 | $ 6,000,000 | $ 4,000,000 |
Pension expense |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Weighted average discount rate used to determine net periodic benefit cost | 5.25% | 2.86% | 2.55% |
Rate of compensation increase to determine the net periodic benefit cost | 4.00% | 4.00% | 4.00% |
Expected long-term rate of return on plan assets | 7.00% | 6.75% | 7.00% |
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation | 5.00% | 5.25% | 2.86% |
Private equity limited partnerships |  | $ 2,000,000 |  |
Company contributions | $ 1,000,000 | 6,000,000 |  |
Pension expense | U.S. Employees |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined contribution plans, employer contribution percentage, for new hires, minimum | 3.00% |  |  |
Defined contribution plans, employer contribution percentage, for new hires, maximum | 8.00% |  |  |
Defined Contribution Plan Employer Contribution Percentage Vested After Three Years | 100.00% |  |  |
Defined contribution plan vesting period | 3 years |  |  |
Incurred expenses | $ 22,000,000 | 18,000,000 | $ 15,000,000 |
Pension expense | U.S. Employees | Maximum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined contribution plans, employer contribution plans, employer contribution percentage, maximum | 3.00% |  |  |
Pension expense | Non-U.S. Employees |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Incurred expenses | $ 6,000,000 | 4,000,000 | $ 3,000,000 |
Defined contribution plan employer contribution percentage for branch offices, minimum | 5.10% |  |  |
Defined contribution plan employer contribution percentage for branch offices, maximum | 29.30% |  |  |
Pension expense | Equity securities: |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Plan assets consist of shares in investment trusts, percentage | 75.00% |  |  |
Pension expense | Fixed maturity securities |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Plan assets consist of shares in investment trusts, percentage | 24.00% |  |  |
Pension expense | Cash |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Plan assets consist of shares in investment trusts, percentage | 1.00% |  |  |
Pension expense | Equity Funds |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target asset allocation percentage | 70.00% |  |  |
Pension expense | Bonds |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target asset allocation percentage | 30.00% |  |  |
Pension expense | Qualified Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Company contributions | $ 0 | $ 0 |  |
Post-Retirement Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Weighted average discount rate used to determine net periodic benefit cost | 5.25% | 2.86% | 2.55% |
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation | 5.00% | 5.25% | 2.86% |
Company contributions | $ 0 | $ 0 |  |
Incurred expenses | $ (1,000,000) | $ 1,000,000 | $ 1,000,000 |
Healthcare inflation rate | 6.75% |  |  |
Post-Retirement Plan | Forecast |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Healthcare inflation rate |  |  |  | 4.75%

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