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FAIR VALUE MEASUREMENTS-CHANGES IN VALUE OF EMBEDDED DERIVATIVES (Details) - Fair Value, Inputs, Level 3 - Fixed Index Annuity Products - Fair Value, Measurements, Recurring - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Liabilities: |  |  |  |
Balance at beginning of the period | $ 1,355.4 | $ 1,371.0 | $ 1,297.0 | $ 1,724.1
Premiums less benefits | (16.2) | 12.0 | (45.9) | 55.3
Change in fair value, net | (125.8) | (129.1) | (37.7) | (525.5)
Balance at end of the period | $ 1,213.4 | $ 1,253.9 | $ 1,213.4 | $ 1,253.9

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Increase (Decrease) in Fair Value + References No definition available. + Details
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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Premiums Less Benefits + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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