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Other Insurance Liabilities and Separate Accounts - Roll Forward of Policyholders' Funds (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Policyholder Account Balance [Roll Forward]
Policyholders’ funds, beginning of the period	$ 332	$ 345
Deposits received	8	(1)
Policy charges	(1)	(1)
Surrenders and withdrawals	(7)	(20)
Interest credited	6	5
Change in net unrealized gains (losses)	(12)	16
Other	(13)	(14)
Policyholders’ funds, end of the period	$ 313	$ 330
Weighted average crediting rate	4.35%	4.55%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 317	$ 323

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