Investments (Narratives) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Mar. 31, 2024 |
Mar. 31, 2023 |
Mar. 31, 2022 |
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Debt Securities, Available-for-Sale [Line Items] | |||
Available for sale securities, realized gain | $ 1.9 | $ 0.9 | $ 9.5 |
Fair value of sold available-for-sale securities | 667.0 | 196.2 | 352.3 |
Gross realized gains on sales of Treasuries | 1.0 | 2.0 | |
Available for sale securities, gross realized losses | 3.1 | 0.3 | $ 1.4 |
Available for sale investments, fair value, recovery amount | 0.5 | 0.5 | |
Assets held by insurance regulators | $ 23.1 | $ 23.4 | |
Mortgages [Member] | Minimum [Member] | |||
Debt Securities, Available-for-Sale [Line Items] | |||
Mortgage loan interest rate | 3.50% | ||
Mortgages [Member] | Maximum [Member] | |||
Debt Securities, Available-for-Sale [Line Items] | |||
Mortgage loan interest rate | 7.70% |
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- Definition Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position, recovered amount at fair value. No definition available.
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- Definition Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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