FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value Inputs, Assets Quantitative Information [Line Items]
Change in purchased market risk benefit asset fair value	$ 1,600		$ 1,100
AFS fixed maturities transferred from Level 3 to Level 2	334	$ 114
AFS fixed maturities transferred from Level 2 to Level 3	$ 0	$ 90
Percentage of total equity representing AFS fixed maturities transferred	15.40%	18.70%
Nonrecurring | Level 3
Fair Value Inputs, Assets Quantitative Information [Line Items]
Investments, fair value	$ 882		$ 736