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Investments (Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Proceeds from sales of fixed maturity securities, available for sale |  |  | $ 772,148 | $ 599,737
Proceeds from sales of equity securities |  |  | 437,815 | 474,663
Fixed Maturity Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Proceeds from sales of fixed maturity securities, available for sale | $ 353,160 | $ 371,459 | 772,148 | 599,737
Gross gains from dispositions | 7,456 | 19,870 | 27,578 | 34,734
Gross losses from dispositions | (23,016) | (9,810) | (40,339) | (15,500)
Equity Securities [Member] |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Proceeds from sales of equity securities | 347,714 | 193,350 | 437,815 | 474,663
Gross gains from dispositions | 4,135 | 5,803 | 7,643 | 18,107
Gross losses from dispositions | $ (35,061) | $ (2,048) | $ (50,356) | $ (8,114)

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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563 + Details
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