Other Insurance Liabilities and Separate Accounts - Roll Forward of Policyholders' Funds (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Policyholder Account Balance [Roll Forward]
Policyholders’ funds, beginning of the period	$ 345	$ 522
Deposits received	(4)	(2)
Surrenders and withdrawals	(7)	(4)
Interest credited	3	4
Change in net unrealized gains (losses)	21	(72)
Other	(9)	(4)
Policyholders’ funds, end of the period	$ 349	$ 444
Weighted average crediting rate	4.55%	4.65%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 332	$ 342

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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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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