INCOME TAXES - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Uncertain tax positions	$ 0	$ 0	$ 0
Foreign tax credits	0	3,000,000
Net operating loss carryforwards	1,000,000
Deferred tax assets, valuation allowance	1,000,000
Unrealized losses on available for sale fixed maturity securities	66,000,000	200,000,000
Tax benefits related to stock vestings and option exercises	2,000,000	3,000,000	3,000,000
Tax benefits related to payment of dividends on restricted stock	400,000	$ 400,000	$ 400,000
Internal Revenue Service (IRS) \| Tax Year 2015
Income Tax Contingency [Line Items]
Federal income tax refund	2,000,000
Internal Revenue Service (IRS) \| Tax Year 2016
Income Tax Contingency [Line Items]
Federal income tax refund	$ 5,000,000

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-6

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend paid to employee stock ownership plan.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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