Assets Deposited With Governmental Authorities.

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Commercial mortgage loans, Percentage

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Financial Instruments Owned and Pledged as Collateral

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Write-down on accrued investment income receivable

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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- Definition

Amount at par value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), purchased with credit deterioration.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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- Definition

Fair value of collateral permitted, by contact or custom, to be sold or re-pledged.

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Amount at par value of financing receivable purchased with credit deterioration.

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The cash outflow for the purchase of loan receivable arising from the financing of goods and services.

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The cash inflow associated with the sale of loans receivables arising from the financing of goods and services.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and financial assets transferred other than securities that qualify as secured borrowings.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of liabilities arising from or related to a financial instrument held by the entity for its own account (proprietary securities) which has been pledged to counterparties.

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Amount of unrealized gain (loss) on investment.

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Investments (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Investments (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Fair value of collateral	$ 0	$ 150,000
Loans Acquired	167,000	0
Loans Sold	$ 1,402,000	$ 0
Commercial mortgage loans, Percentage	100.00%	100.00%
Repurchase Agreements	$ 0	$ 0
Securities Lending	0	0
Fixed maturities, available-for-sale	8,770,966	18,584,685
Fixed maturities purchased with credit deterioration	0	0
Commercial mortgage and other loans purchased with credit deterioration	0	0
Accrued Investment Income Write Down	200	0
Total securities pledged	0	0
Total liabilities supported by pledged collateral	0	0
Carrying value of non-income producing assets
Schedule of Investments [Line Items]
Fixed maturities, available-for-sale	$ 2,600
California
Schedule of Investments [Line Items]
Commercial mortgage loans, Percentage	34.00%
Texas
Schedule of Investments [Line Items]
Commercial mortgage loans, Percentage	18.00%
New York
Schedule of Investments [Line Items]
Commercial mortgage loans, Percentage	7.00%
Europe
Schedule of Investments [Line Items]
Commercial mortgage loans, Percentage	6.00%
Mexico
Schedule of Investments [Line Items]
Commercial mortgage loans, Percentage	1.00%
Fixed maturities
Schedule of Investments [Line Items]
Gross Unrealized Losses	$ 85,245	23,882
Gross unrealized losses of twelve months or more concentrated in various sectors	11,189	6,072
Fixed maturities, available-for-sale	8,770,966	18,584,685
Assets Deposited With Governmental Authorities	12,300	10,000
NAIC high or highest quality rating \| Fixed maturities
Schedule of Investments [Line Items]
Gross Unrealized Losses	72,900	17,400
NAIC other than high or highest quality rating \| Fixed maturities
Schedule of Investments [Line Items]
Gross Unrealized Losses	12,300	6,500
Other Income \| Fixed maturities \| Trading
Schedule of Investments [Line Items]
Unrealized Gain (Loss) on Investments	(279,300)	60,300	$ 38,400
Other Income \| Equity securities
Schedule of Investments [Line Items]
Unrealized Gain (Loss) on Investments	(10,400)	5,100	$ 2,000
Fixed maturities
Schedule of Investments [Line Items]
Gross unrealized losses of twelve months or more concentrated in various sectors	$ 11,200	$ 6,100