FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
AFS fixed maturities transferred from Level 3 to Level 2	$ 5
AFS fixed maturities transferred between Level 2 and 3 (percentage)	0.60%
Level 3 | Fair Value, Nonrecurring
Fair Value Inputs Assets Quantitative Information 1 [Line Items]
Fair value measurements not included in quantitative information about level 3 fair value measurements	$ 8	$ 2