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Investments - Held-to-maturity Security - Narrative (Details) | 6 Months Ended
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Jun. 30, 2022 USD ($)
Schedule Of Held To Maturity Securities [Line Items] |
Held-to-maturity debt security estimated unrealized holding loss | $ 37,200,000
Held-to-maturity debt security Credit losses | $ 0
LLC Note [Member] |
Schedule Of Held To Maturity Securities [Line Items] |
Debt instrument, maturity date | Dec. 31, 2030
Debt instrument, interest rate, stated percentage | 4.50%
Surplus Note [Member] |
Schedule Of Held To Maturity Securities [Line Items] |
Debt instrument, maturity date | Dec. 31, 2030
Debt instrument, interest rate, stated percentage | 4.50%

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- Definition Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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