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Fair Value Option (Gains And Losses Due To Changes In Fair Value Of Investments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] |  |  |  |
(Losses) gains due to changes in fair value of investments | $ (127,219) | $ (46,131) | $ (549,775) | $ 25,182
Investments |  |  |  |
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] |  |  |  |
(Losses) gains due to changes in fair value of investments | (127,219) | (46,174) | (549,775) | 25,167
Fixed maturity securities |  |  |  |
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] |  |  |  |
(Losses) gains due to changes in fair value of investments | (83,257) | (26,120) | (329,458) | (21,729)
Equity Securities |  |  |  |
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] |  |  |  |
(Losses) gains due to changes in fair value of investments | (45,779) | (19,884) | (220,469) | 47,057
Short-term investments |  |  |  |
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] |  |  |  |
(Losses) gains due to changes in fair value of investments | 1,817 | (170) | 152 | (161)
Financing Receivable |  |  |  |
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items] |  |  |  |
(Losses) gains due to changes in fair value of investments | $ 0 | $ 43 | $ 0 | $ 15

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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14172-108612 + Details
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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. + References No definition available. + Details
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