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Investments (Net Unrealized Gains (Losses) on Investments Reported as a Separate Component of Stockholders' Equity) (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Investments [Abstract] |  |
Net unrealized losses on investments | $ (4,232,154) | $ (5,065,422)
Deferred income tax valuation allowance reversal | 22,534 | 22,534
Deferred income tax expense | 888,455 | 1,063,441
Net unrealized losses reported as accumulated other comprehensive loss | $ (3,321,165) | $ (3,979,447)

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- Definition The tax effect on the accumulated unrealized gain or loss on the total available for sale security portfolio at the reporting date. + References No definition available. + Details
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- Definition The amount of reversal recorded to eliminate the deferred tax asset valuation allowance that represents a component of net unrealized gain/loss in other comprehensive income. + References No definition available. + Details
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- Definition Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82922866-210454 + Details
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- Definition Amount, before tax, of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References No definition available. + Details
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