Investments - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss	$ 2,037,294	$ 34,039
Increase (decrease) in gross unrealized losses	2,000,000
Increase (decrease) in allowance	$ 1,000
Commercial mortgage loan participations
Debt Securities, Available-for-sale [Line Items]
Number of loans \| loan	22
Allowance for credit losses	$ 1,789	$ 827	$ 3,505
Financing receivable, number of loans in delinquent \| loan	0

Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Increase (Decrease) In Accumulated Loss

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- Definition

Financing Receivable, Number Of Delinquent Loans

+ References

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- Definition

Financing Receivable, Number Of Loans

+ References

No definition available.

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- Definition

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.

+ References

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References

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- Definition

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

+ References

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- Definition

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.

+ References

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