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INVESTMENTS - Schedule of Components of Net Realized Capital Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Debt Securities, Available-for-Sale [Line Items]
Net gains (losses) on investments	$ (17)	$ 5	$ (24)	$ 10
Fixed maturities | Market Value
Debt Securities, Available-for-Sale [Line Items]
Allowance for credit losses	4	0	6	(8)
Fixed maturities | Fair Value
Debt Securities, Available-for-Sale [Line Items]
Net realized gains (losses) from dispositions	(15)	(3)	(22)	(1)
Equity securities | Market Value
Debt Securities, Available-for-Sale [Line Items]
Gains (losses) from fair value adjustments	(5)	8	(8)	12
Equity securities | Fair Value
Debt Securities, Available-for-Sale [Line Items]
Net realized gains (losses) from dispositions	0	0	1	7
Other invested assets
Debt Securities, Available-for-Sale [Line Items]
Net realized gains (losses) from dispositions	$ (1)	$ 0	$ (1)	$ 0

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