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INVESTMENTS IN VARIABLE INTEREST ENTITIES - NARRATIVE (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 USD ($) investment | Mar. 31, 2025 USD ($) | Dec. 31, 2025 USD ($)
Variable Interest Entity [Line Items] |  |  |
Interest expense | $ 50.9 | $ 62.0 |
Variable interest entities net realized gain (losses) on investments | (1.3) | (3.5) |
Net losses from the sales of fixed maturities | (0.9) | (2.2) |
Variable interest entities, change in allowance for credit losses | 0.4 | 1.3 |
Variable interest entity, gross investment losses from sale | 0.9 | (2.4) |
Variable interest entities, investments sold | $ 5.1 | 47.1 |
Number of investments held by VIE, in default | investment | 0 |  |
Less than 12 months | $ 4,728.1 |  | $ 1,864.0
Gross unrealized losses of investments in unrealized loss position for less than 12 months | 99.3 |  | 58.5
12 months or greater | 5,045.5 |  | 5,964.9
Gross unrealized losses of investments in unrealized loss position for more than 12 months | 827.8 |  | 836.7
Investments held in limited partnerships | 763.5 |  |
Unfunded commitments to limited partnerships | 662.3 |  |
Variable Interest Entity, Primary Beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Interest expense | 3.8 | $ 7.5 |
Less than 12 months | 89.2 |  | 86.7
Gross unrealized losses of investments in unrealized loss position for less than 12 months | 1.4 |  | 0.9
12 months or greater | 84.1 |  | 34.2
Gross unrealized losses of investments in unrealized loss position for more than 12 months | 2.1 |  | $ 0.3
Variable Interest Entity, Primary Beneficiary | Non Investment Grade |  |  |
Variable Interest Entity [Line Items] |  |  |
Total amortized cost | 292.1 |  |
Variable interest entity, gross unrealized gains fixed maturity securities | 0.3 |  |
Variable interest entity gross unrealized losses fixed maturity securities | 4.0 |  |
Variable interest entity, allowance for credit losses fixed maturity securities | 1.0 |  |
Variable Interest Entity, Not Primary Beneficiary | Non Investment Grade |  |  |
Variable Interest Entity [Line Items] |  |  |
Estimated fair value of fixed maturity securities | $ 287.4 |  |

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