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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, 2024	Dec. 31, 2023
Investments [Abstract]
Net unrealized losses on investments	$ (3,963,901)	$ (3,755,689)
Deferred income tax valuation allowance reversal	22,534	22,534
Deferred income tax expense	831,961	788,236
Net unrealized losses reported as accumulated other comprehensive loss	$ (3,109,406)	$ (2,944,919)

X

- 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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X

- 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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X

- 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
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-2

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X

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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- References

No definition available.

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