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INVESTMENTS - TOTAL INVESTMENT GAINS (LOSSES) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Realized investment gains (losses): |  |  |  |
Total realized investment losses | $ (21.3) | $ (26.3) | $ (25.1) | $ (36.3)
Change in allowance for credit losses | (1.0) | 4.1 | (10.7) | 5.6
Change in fair value of equity securities | 4.6 | (0.7) | 2.1 | 0.2
Other changes in fair value | (0.7) | 5.7 | 8.5 | 17.3
Gain on liquidation of variable interest entities | 0.0 | 0.0 | 0.0 | 3.8
Other investment gains (losses) | 2.9 | 9.1 | (0.1) | 26.9
Total investment gains (losses) | (18.4) | (17.2) | (25.2) | (9.4)
Variable interest entities, change in allowance for current expected credit losses | (0.2) | (1.5) | 1.0 | (0.3)
Increase (decrease) in equity securities, FV-NI, held at end of period | 4.2 | (0.7) | 4.8 | 0.3
Change in estimated fair value of trading securities | 0.8 | 0.0 | 6.6 | 4.7
Embedded Derivative Related to Fixed Maturity Securities |  |  |  |
Realized investment gains (losses): |  |  |  |
Increase (decrease) in fair value of certain fixed maturity investments with embedded derivatives | (0.8) | 5.8 | 7.2 | 17.1
Coinsurance | Reinsurance Contract |  |  |  |
Realized investment gains (losses): |  |  |  |
Increase (decrease) in fair value of certain fixed maturity investments with embedded derivatives | 0.1 | (0.1) | 1.3 | 0.2
Total Fixed Maturities, Available For Sale |  |  |  |
Realized investment gains (losses): |  |  |  |
Gross realized gains on sales of fixed maturities, available for sale | 1.9 | 0.9 | 2.9 | 3.0
Gross realized losses on sales of fixed maturities, available for sale | (21.8) | (27.6) | (24.6) | (33.5)
Equity securities, net | (0.5) | (0.1) | (0.5) | (0.1)
Other, net | $ (0.9) | $ 0.5 | $ (2.9) | $ (5.7)

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