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INVESTMENTS - Summary of Gross Gains (Losses) from Sales of Fixed Maturity and Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Securities, Available-for-Sale [Line Items]
Proceeds from sales of fixed maturity securities - available for sale	$ 96	$ 353	$ 168	$ 772
Gross gains from dispositions	7	7	17	28
Gross losses from dispositions	(10)	(23)	(19)	(40)
Proceeds from sales of equity securities			46	438
Equity securities
Debt Securities, Available-for-Sale [Line Items]
Proceeds from sales of equity securities	0	348	46	438
Gross gains from dispositions	0	4	7	8
Gross losses from dispositions	$ 0	$ (35)	$ 0	$ (50)

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