ACCOUNTING FOR DERIVATIVES - FAIR VALUE BY BALANCE SHEET LOCATION (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Fixed indexed call options
Derivatives, Fair Value [Line Items]
Fixed indexed call options	$ 373.6	$ 239.2
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Total assets	358.0	221.7
Total liabilities	1,551.9	1,376.7
Not Designated as Hedging Instrument \| Fixed indexed call options \| Other invested assets
Derivatives, Fair Value [Line Items]
Fixed indexed call options	373.6	239.2
Not Designated as Hedging Instrument \| Reinsurance receivables \| Reinsurance receivables
Derivatives, Fair Value [Line Items]
Reinsurance receivables	(15.6)	(17.5)
Not Designated as Hedging Instrument \| Embedded derivatives related to fixed indexed annuities at fair value \| Policyholder account balances
Derivatives, Fair Value [Line Items]
Total liabilities	1,655.1	1,651.6
Not Designated as Hedging Instrument \| Embedded derivatives related to fixed indexed annuities at fair value \| Future policy benefits
Derivatives, Fair Value [Line Items]
Total liabilities	$ (103.2)	$ (274.9)

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Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangements

+ References

No definition available.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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