Investments Available-for-Sale Securities in a Loss Position Narrative (Details) $ in Thousands |
Sep. 30, 2026
USD ($)
Rate
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Dec. 31, 2025
USD ($)
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| Debt Securities, Available-for-sale [Line Items] | ||
| Number of available-for-sale securities in unrealized loss positions | 1,090 | |
| Total Estimated Fair Value | $ 4,186,629 | $ 1,324,279 |
| Gross Unrealized Losses | $ 240,022 | $ 86,496 |
| Number of available-for-sale securities in unrealized loss positions, greater than one year | 316 | |
| Fixed maturities [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Available-for-sale securities, percentage of securities with ratings of A minus or better | Rate | 83.90% |
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- Definition The percentage of securities in available-for-sale investments rated as "A-" or better and continue to pay the expected coupon payments under the contractual terms of the securities. No definition available.
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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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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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- Details
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