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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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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

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