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INVESTMENTS - TOTAL INVESTMENT GAINS (LOSSES) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Realized investment gains (losses): |  |  |  |
Total realized investment losses | $ (13.1) | $ (21.6) | $ (49.4) | $ (58.0)
Change in allowance for credit losses and write-downs | 1.6 | (2.3) | 7.2 | (13.7)
Change in fair value of equity securities | 2.8 | (0.9) | 3.0 | (0.5)
Other changes in fair value | 9.8 | (4.5) | 27.1 | (7.0)
Gain on liquidation of variable interest entities | 0.1 | 0.0 | 3.9 | 0.0
Other investment gains (losses) | 14.3 | (7.7) | 41.2 | (21.2)
Net realized investment gains (losses) | 1.2 | (29.3) | (8.2) | (79.2)
Variable interest entities, change in allowance for current expected credit losses | (1.0) | (1.6) | (1.3) | (2.6)
Increase (decrease) in equity securities, FV-NI, held at end of period | 2.8 | (0.9) | 3.1 | (0.7)
Change in estimated fair value of trading securities | 6.1 | (3.6) | 10.8 | (8.0)
Total Fixed Maturities, Available For Sale |  |  |  |
Realized investment gains (losses): |  |  |  |
Gross realized gains on sales of fixed maturities, available for sale | 6.3 | 1.3 | 9.3 | 11.4
Gross realized losses on sales of fixed maturities, available for sale | (12.8) | (9.8) | (46.3) | (45.8)
Equity securities, net | 0.0 | 0.0 | (0.1) | (0.6)
Other, net | $ (6.6) | $ (13.1) | $ (12.3) | $ (23.0)

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