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Investments (Narratives) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Mar. 31, 2021
Insurance Regulatory Authorites: |  |
Assets held by insurance regulators | $ 26.6 | $ 27.7
Available for sale securities: |  |
Fair value of sold available for sale securites | 278.8 |
Available-for-sale securities, gross realized gains | 4.7 |
Available-for-sale securities, gross realized losses | $ 3.0 |

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