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Total issues of fixed maturities.

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Financing Receivable, Number Of Delinquent Loans

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Financing Receivable, Number Of Loans in Non-Accrual Status

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Number of Fixed Maturities in Non-Accrual Status

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Percentage of fixed maturities by component at fair value.

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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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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, beyond the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the long-term.

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Amount of realized gain (loss) on investment.

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Investments - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) loan fixedMaturity issuer commercialMortgageLoan Issue	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) loan fixedMaturity issuer commercialMortgageLoan Issue	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) commercialMortgageLoan fixedMaturity Issue issuer
Debt Securities, Available-for-sale [Line Items]
Fair value	$ 17,033,450		$ 17,033,450		$ 16,503,365
Fixed maturity, portfolio issues \| Issue	2,418		2,418		2,328
Fixed portfolio, number of issuers \| issuer	986		986		979
Number of fixed maturities in non-accrual status \| fixedMaturity	2		2		2
Investment funds, unfunded commitments	$ 725,000		$ 725,000
Increase in allowance for credit losses			1,100
Realized gain (loss)—investments	$ (45,843)	$ (30,446)	$ (76,770)	$ (37,690)
Number of loans in non-accrual status \| commercialMortgageLoan	0		0		0
Unfunded Loan Commitment
Debt Securities, Available-for-sale [Line Items]
Carrying value, net of valuation allowance	$ 23,000		$ 23,000
Fixed maturities available for sale
Debt Securities, Available-for-sale [Line Items]
Fair value	$ 17,033,450		$ 17,033,450		$ 16,503,365
Percentage of fixed maturities at fair value	100.00%		100.00%		100.00%
Fixed maturities available for sale \| Corporates
Debt Securities, Available-for-sale [Line Items]
Fair value	$ 13,863,803		$ 13,863,803		$ 13,666,064
Percentage of fixed maturities at fair value	81.00%		81.00%		83.00%
Investment in Limited Partnerships
Debt Securities, Available-for-sale [Line Items]
Capital called from investment funds			$ 33,000
Investment funds, unfunded commitments	$ 725,390		$ 725,390
Commercial mortgage loan participations
Debt Securities, Available-for-sale [Line Items]
Number of loans \| loan	25		25
Realized gain (loss)—investments			$ (2,900)
Financing receivable, number of loans in delinquent \| commercialMortgageLoan	0		0		0
Carrying value, net of valuation allowance	$ 221,466		$ 221,466		$ 181,305
Banks \| Fixed maturities available for sale \| Corporates
Debt Securities, Available-for-sale [Line Items]
Fair value	$ 1,200,000		$ 1,200,000		$ 1,300,000
Percentage of fixed maturities at fair value	7.00%		7.00%		8.00%
Real Estate Investment Trust \| Fixed maturities available for sale \| Corporates
Debt Securities, Available-for-sale [Line Items]
Fair value	$ 405,000		$ 405,000		$ 428,000
Percentage of fixed maturities at fair value	2.00%		2.00%		3.00%