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INVESTMENTS - TOTAL INVESTMENT GAINS (LOSSES) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Realized investment gains (losses): |  |  |  |
Total realized investment gains (losses) | $ (21.6) | $ (8.2) | $ (58.0) | $ 3.6
Change in allowance for credit losses | (2.3) | 7.5 | (13.7) | (46.9)
Change in fair value of equity securities | (0.9) | (0.7) | (0.5) | (2.4)
Other changes in fair value | (4.5) | (16.3) | (7.0) | (53.5)
Other investment losses | (7.7) | (9.5) | (21.2) | (102.8)
Net realized investment gains (losses) | (29.3) | (17.7) | (79.2) | (99.2)
Variable interest entities, change in allowance for current expected credit losses | 1.6 | 5.7 | 2.6 | (2.8)
Increase (decrease) in equity securities, FV-NI, held at end of period |  |  | (0.7) | (6.9)
Change in estimated fair value of trading securities |  |  | (8.0) | (36.6)
Total fixed maturities, available for sale |  |  |  |
Realized investment gains (losses): |  |  |  |
Gross realized gains on sales of fixed maturities, available for sale | 1.3 | 18.1 | 11.4 | 96.4
Gross realized losses on sales of fixed maturities, available for sale | (9.8) | (24.4) | (45.8) | (81.3)
Equity securities, net | 0.0 | 0.0 | (0.6) | (8.3)
Other, net | $ (13.1) | $ (1.9) | $ (23.0) | $ (3.2)

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