Other Insurance Liabilities and Separate Accounts - Roll Forward of Policyholders' Funds (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Policyholder Account Balance [Roll Forward]
Policyholders’ funds, beginning of the period	$ 345	$ 522
Deposits received	1	10
Policy charges	(2)	(1)
Surrenders and withdrawals	(23)	(27)
Interest credited	9	10
Change in net unrealized losses	(4)	(163)
Other	(23)	(18)
Policyholders’ funds, end of the period	$ 303	$ 333
Weighted average crediting rate	4.40%	4.80%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 324	$ 337

Policyholder Account Balance, Change In Net Unrealized Gains (Losses)

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Policyholder Account Balance, Deposits Received

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Amount of cash to be paid to policyholder upon termination and surrender of long-duration contract issued by insurance entity.

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Amount of interest expense for allocation to policyholder account balance.

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Amount of increase (decrease) in liability for policyholder account balance from change, classified as other.

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Amount of guaranteed benefit in excess of current account balance of policyholder account balance.

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Amount of decrease in liability for policyholder account balance from policy charge.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of decrease in liability for policyholder account balance from contract redemption and withdrawal of funds.

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Weighted-average crediting rate for liability for policyholder account balance, calculated at a point in time.

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Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense.

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