INVESTMENTS - Schedule of Allowance for Credit Losses for AFS Debt Securities (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period		$ 3	$ 8
Gross write-offs		0	0
Gross recoveries		0	0
Net credit losses (NCLs)		0	0
Credit losses on securities without previous credit losses		1	0
Net reserve builds (releases) on securities with previous credit losses		0	0
Total provision for credit losses	[1]	1	0
Initial allowance on newly purchased credit-deteriorated securities during the period		0	0
Allowance for credit losses at end of period		4	8
Corporate
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period		3	8
Gross write-offs		0	0
Gross recoveries		0	0
Net credit losses (NCLs)		0	0
Credit losses on securities without previous credit losses		1	0
Net reserve builds (releases) on securities with previous credit losses		0	0
Total provision for credit losses		1	0
Initial allowance on newly purchased credit-deteriorated securities during the period		0	0
Allowance for credit losses at end of period		$ 4	$ 8

[1] In accordance with ASC 326, which requires the provision for credit losses on AFS securities to be included in revenue.