Business and Basis of Presentation (Narrative) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) subsidiary	Mar. 31, 2021 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number Of Subsidiaries \| subsidiary	1
Realized investment gains (losses), net	$ 784,107	$ 76,608
Income (loss) from operations before income taxes and equity in earnings of operating joint venture	(29,692)	$ 58,081
Out of period adjustment
Realized investment gains (losses), net	48,000
Income (loss) from operations before income taxes and equity in earnings of operating joint venture	$ 48,000

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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