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INVESTMENTS - Schedule of Components of Net Realized Capital Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Net gains (losses) on investments	$ (7)	$ (7)
Fixed maturities | Market Value
Debt Securities, Available-for-Sale [Line Items]
Allowance for credit losses	(1)	2
Fixed maturities | Fair Value
Debt Securities, Available-for-Sale [Line Items]
Net realized gains (losses) from dispositions	(4)	(7)
Equity securities | Market Value
Debt Securities, Available-for-Sale [Line Items]
Gains (losses) from fair value adjustments	(2)	(2)
Equity securities | Fair Value
Debt Securities, Available-for-Sale [Line Items]
Net realized gains (losses) from dispositions	$ 0	$ 1

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