DERIVATIVES - FAIR VALUE BY BALANCE SHEET LOCATION (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Mark to market adjustment on embedded derivative	$ 74.7
Fixed indexed call options
Derivatives, Fair Value [Line Items]
Fixed indexed call options	279.0	$ 239.2
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Total assets	261.9	221.7
Not Designated as Hedging Instrument \| Fixed indexed call options \| Other invested assets
Derivatives, Fair Value [Line Items]
Fixed indexed call options	279.0	239.2
Not Designated as Hedging Instrument \| Reinsurance receivables \| Reinsurance receivables
Derivatives, Fair Value [Line Items]
Reinsurance receivables	(17.1)	(17.5)
Not Designated as Hedging Instrument \| Fixed Indexed Annuities - Embedded Derivative \| Policyholder account balances
Derivatives, Fair Value [Line Items]
Total liabilities	$ 1,493.2	$ 1,376.7

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