INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Contractual Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Fair Value
Less than 12 months	$ 2,655	$ 2,566
Greater than 12 months	8,324	12,222
Total	10,979	14,789
Gross Unrealized Depreciation
Less than 12 months	(111)	(102)
Greater than 12 months	(682)	(1,035)
Total	(793)	(1,137)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	2,654	2,564
Greater than 12 months	8,324	12,222
Total	10,978	14,787
Gross Unrealized Depreciation
Less than 12 months	(111)	(101)
Greater than 12 months	(681)	(1,035)
Total	(792)	(1,136)
Due in one year or less
Fair Value
Less than 12 months	205	184
Greater than 12 months	520	773
Total	725	958
Gross Unrealized Depreciation
Less than 12 months	(7)	(3)
Greater than 12 months	(28)	(30)
Total	(35)	(33)
Due in one year through five years
Fair Value
Less than 12 months	985	699
Greater than 12 months	2,946	3,841
Total	3,931	4,540
Gross Unrealized Depreciation
Less than 12 months	(27)	(18)
Greater than 12 months	(190)	(271)
Total	(217)	(289)
Due in five years through ten years
Fair Value
Less than 12 months	235	328
Greater than 12 months	1,651	2,306
Total	1,885	2,633
Gross Unrealized Depreciation
Less than 12 months	(12)	(15)
Greater than 12 months	(206)	(310)
Total	(218)	(325)
Due after ten years
Fair Value
Less than 12 months	124	429
Greater than 12 months	562	417
Total	686	845
Gross Unrealized Depreciation
Less than 12 months	(2)	(39)
Greater than 12 months	(69)	(77)
Total	(72)	(116)
Asset-backed Securities
Fair Value
Less than 12 months	268	196
Greater than 12 months	565	2,014
Total	833	2,210
Gross Unrealized Depreciation
Less than 12 months	(2)	(2)
Greater than 12 months	(18)	(49)
Total	(20)	(51)
Mortgage-backed securities
Fair Value
Less than 12 months	838	729
Greater than 12 months	2,081	2,872
Total	2,919	3,601
Gross Unrealized Depreciation
Less than 12 months	(61)	(24)
Greater than 12 months	(169)	(298)
Total	(230)	(323)
Securities where an allowance for credit loss was recorded
Fair Value
Less than 12 months	1	2
Greater than 12 months	0	0
Total	1	2
Gross Unrealized Depreciation
Less than 12 months	0	(1)
Greater than 12 months	(1)	0
Total	$ (1)	$ (1)

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