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DERIVATIVES - FAIR VALUE BY BALANCE SHEET LOCATION (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fixed indexed call options |  |
Derivatives, Fair Value [Line Items] |  |
Fixed indexed call options | $ 297.2 | $ 279.0
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Total assets | 281.9 | 261.9
Not Designated as Hedging Instrument | Fixed indexed call options | Other invested assets |  |
Derivatives, Fair Value [Line Items] |  |
Fixed indexed call options | 297.2 | 279.0
Not Designated as Hedging Instrument | Reinsurance receivables | Reinsurance receivables |  |
Derivatives, Fair Value [Line Items] |  |
Reinsurance receivables | (15.3) | (17.1)
Not Designated as Hedging Instrument | Embedded derivatives related to fixed indexed annuities at fair value | Policyholder account balances |  |
Derivatives, Fair Value [Line Items] |  |
Policyholder account balances | $ 1,598.4 | $ 1,471.6

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