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DERIVATIVES - FAIR VALUE BY BALANCE SHEET LOCATION (Details) - USD ($) $ in Millions | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Fixed indexed call options |  |
Derivatives, Fair Value [Line Items] |  |
Fixed indexed call options | $ 195.2 | $ 323.5
Not Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Total assets | 179.5 | 308.2
Not Designated as Hedging Instrument | Fixed indexed call options | Other invested assets |  |
Derivatives, Fair Value [Line Items] |  |
Fixed indexed call options | 195.2 | 323.5
Not Designated as Hedging Instrument | Reinsurance receivables | Reinsurance receivables |  |
Derivatives, Fair Value [Line Items] |  |
Reinsurance receivables | (15.7) | (15.3)
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 | $ 1,564.2 | $ 1,600.6

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