Investments - Net Investment Income (Parenthetical) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
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| Schedule of Net Investment Income, Reported Amounts, by Category [Line Items] | |||||
| Gains (losses) recognized for change in fair value of deposit asset underlying the 10% coinsurance agreement | $ 0.2 | $ 0.2 | $ 0.7 | $ 0.1 | |
| Investment, Type [Extensible Enumeration] | Deposit Asset Underlying10 Insurance Agreement [Member] | Deposit Asset Underlying10 Insurance Agreement [Member] | Deposit Asset Underlying10 Insurance Agreement [Member] | Deposit Asset Underlying10 Insurance Agreement [Member] | Deposit Asset Underlying10 Insurance Agreement [Member] |
| Percentage of coinsurance costs | 10.00% | 10.00% | 10.00% | 10.00% | |
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- Definition Percentage of coinsurance covered costs. No definition available.
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company. 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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