INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Security Type (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)
U.S. Treasury securities and obligations of U.S. government agencies and corporations
Fair Value
Less than 12 months	161	122
Greater than 12 months	464	772
Total	625	893
Gross Unrealized Depreciation
Less than 12 months	(8)	(3)
Greater than 12 months	(27)	(49)
Total	(35)	(52)
Obligations of U.S. states and political subdivisions
Fair Value
Less than 12 months	1	3
Greater than 12 months	41	74
Total	42	77
Gross Unrealized Depreciation
Less than 12 months	0	0
Greater than 12 months	(4)	(11)
Total	(4)	(11)
Corporate Securities
Fair Value
Less than 12 months	761	1,019
Greater than 12 months	2,322	2,780
Total	3,083	3,799
Gross Unrealized Depreciation
Less than 12 months	(21)	(58)
Greater than 12 months	(193)	(263)
Total	(214)	(321)
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)
Commercial
Fair Value
Less than 12 months	155	181
Greater than 12 months	679	742
Total	834	923
Gross Unrealized Depreciation
Less than 12 months	(11)	(19)
Greater than 12 months	(45)	(73)
Total	(56)	(92)
Agency Residential
Fair Value
Less than 12 months	645	423
Greater than 12 months	1,377	2,126
Total	2,022	2,549
Gross Unrealized Depreciation
Less than 12 months	(49)	(4)
Greater than 12 months	(124)	(225)
Total	(173)	(229)
Non-agency Residential
Fair Value
Less than 12 months	37	126
Greater than 12 months	25	4
Total	63	130
Gross Unrealized Depreciation
Less than 12 months	0	(1)
Greater than 12 months	0	0
Total	0	0
Foreign government securities
Fair Value
Less than 12 months	219	172
Greater than 12 months	858	985
Total	1,076	1,156
Gross Unrealized Depreciation
Less than 12 months	(10)	(7)
Greater than 12 months	(86)	(101)
Total	(96)	(108)
Foreign corporate securities
Fair Value
Less than 12 months	406	324
Greater than 12 months	1,994	2,726
Total	2,400	3,050
Gross Unrealized Depreciation
Less than 12 months	(10)	(6)
Greater than 12 months	(183)	(265)
Total	(193)	(271)
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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