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INVESTMENTS - TOTAL INVESTMENT GAINS (LOSSES) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Realized investment gains (losses): |  |  |  |
Total realized investment losses | $ (26.3) | $ (21.8) | $ (36.3) | $ (36.4)
Change in allowance for credit losses | 4.1 | (9.9) | 5.6 | (11.4)
Change in fair value of equity securities | (0.7) | 0.0 | 0.2 | 0.4
Other changes in fair value | 5.7 | (3.6) | 17.3 | (2.5)
Gain on liquidation of variable interest entity | 0.0 | 0.0 | 3.8 | 0.0
Other investment gains | 9.1 | (13.5) | 26.9 | (13.5)
Net realized investment gains (losses) | (17.2) | (35.3) | (9.4) | (49.9)
Variable interest entities, change in allowance for current expected credit losses | (1.5) | 1.0 | (0.3) | (1.0)
Increase (decrease) in equity securities, FV-NI, held at end of period | (0.7) | (0.5) | 0.3 | 0.1
Change in estimated fair value of trading securities | 0.0 | (3.1) | 4.7 | (5.6)
Total Fixed Maturities, Available For Sale |  |  |  |
Realized investment gains (losses): |  |  |  |
Gross realized gains on sales of fixed maturities, available for sale | 0.9 | 2.8 | 3.0 | 10.1
Gross realized losses on sales of fixed maturities, available for sale | (27.6) | (21.6) | (33.5) | (36.0)
Equity securities, net | (0.1) | (0.4) | (0.1) | (0.6)
Other, net | $ 0.5 | $ (2.6) | $ (5.7) | $ (9.9)

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