INVESTMENTS - Net Investment Income (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Investment Income [Line Items]
Equity in income (loss) from AB	$ 0	$ 3	$ 8
Gross investment income (loss)	92	91	89
Investment expenses	(5)	(3)	(3)
Net investment income (loss)	87	88	86
Alliance Bernstein
Net Investment Income [Line Items]
Equity in income (loss) from AB	0	3	8
Fixed maturities
Net Investment Income [Line Items]
Investment income	88	83	74
Mortgage loans on real estate
Net Investment Income [Line Items]
Investment income	1	1	1
Other equity investments
Net Investment Income [Line Items]
Other Investment Income (Loss), Gross	(2)	1	3
Policy loans
Net Investment Income [Line Items]
Investment income	4	3	3
Other investment income
Net Investment Income [Line Items]
Investment income	$ 1	$ 0	$ 0

Other investment income

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Other Investment Income (Loss), Gross

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Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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