INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Contractual Maturity (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 2,566	$ 15,215
Greater than 12 months	12,222	4,432
Total	14,789	19,647
Gross Unrealized Depreciation
Less than 12 months	(102)	(1,217)
Greater than 12 months	(1,035)	(764)
Total	(1,137)	(1,982)
Fixed maturity securities
Gross Unrealized Depreciation
Less than 12 months		(1,200)
Greater than 12 months	(1,000)	(764)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	2,564	15,213
Greater than 12 months	12,222	4,432
Total	14,787	19,645
Gross Unrealized Depreciation
Less than 12 months	(101)	(1,217)
Greater than 12 months	(1,035)	(764)
Total	(1,136)	(1,982)
Due in one year or less
Fair Value
Less than 12 months	184	989
Greater than 12 months	773	40
Total	958	1,029
Gross Unrealized Depreciation
Less than 12 months	(3)	(19)
Greater than 12 months	(30)	(7)
Total	(33)	(26)
Due in one year through five years
Fair Value
Less than 12 months	699	4,935
Greater than 12 months	3,841	1,645
Total	4,540	6,580
Gross Unrealized Depreciation
Less than 12 months	(18)	(383)
Greater than 12 months	(271)	(209)
Total	(289)	(592)
Due in five years through ten years
Fair Value
Less than 12 months	328	2,698
Greater than 12 months	2,306	911
Total	2,633	3,609
Gross Unrealized Depreciation
Less than 12 months	(15)	(360)
Greater than 12 months	(310)	(230)
Total	(325)	(590)
Due after ten years
Fair Value
Less than 12 months	429	672
Greater than 12 months	417	408
Total	845	1,080
Gross Unrealized Depreciation
Less than 12 months	(39)	(91)
Greater than 12 months	(77)	(116)
Total	(116)	(207)
Asset-backed securities
Fair Value
Less than 12 months	196	3,204
Greater than 12 months	2,014	456
Total	2,210	3,661
Gross Unrealized Depreciation
Less than 12 months	(2)	(142)
Greater than 12 months	(49)	(29)
Total	(51)	(171)
Mortgage-backed securities
Fair Value
Less than 12 months	729	2,715
Greater than 12 months	2,872	972
Total	3,601	3,687
Gross Unrealized Depreciation
Less than 12 months	(24)	(222)
Greater than 12 months	(298)	(173)
Total	(323)	(395)
Recorded an Allowance for Credit Losses
Fair Value
Less than 12 months	2	2
Greater than 12 months	0	0
Total	2	2
Gross Unrealized Depreciation
Less than 12 months	(1)	0
Greater than 12 months	0	0
Total	$ (1)	$ 0

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