INVESTMENTS - Schedule of Aggregate Fair Value and Gross Unrealized Depreciation of Fixed Maturity Securities by Security Type (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value
Less than 12 months	$ 7,428	$ 2,566
Greater than 12 months	9,980	12,222
Total	17,408	14,789
Gross Unrealized Depreciation
Less than 12 months	(234)	(102)
Greater than 12 months	(1,016)	(1,035)
Total	(1,249)	(1,137)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	7,414	2,564
Greater than 12 months	9,978	12,222
Total	17,392	14,787
Gross Unrealized Depreciation
Less than 12 months	(233)	(101)
Greater than 12 months	(1,016)	(1,035)
Total	(1,248)	(1,136)
U.S. Treasury securities and obligations of U.S. government agencies and corporations
Fair Value
Less than 12 months	187	122
Greater than 12 months	734	772
Total	922	893
Gross Unrealized Depreciation
Less than 12 months	(4)	(3)
Greater than 12 months	(44)	(49)
Total	(49)	(52)
Obligations of U.S. states and political subdivisions
Fair Value
Less than 12 months	5	3
Greater than 12 months	64	74
Total	69	77
Gross Unrealized Depreciation
Less than 12 months	0	0
Greater than 12 months	(9)	(11)
Total	(9)	(11)
Corporate Securities
Fair Value
Less than 12 months	2,331	1,019
Greater than 12 months	2,868	2,780
Total	5,199	3,799
Gross Unrealized Depreciation
Less than 12 months	(60)	(58)
Greater than 12 months	(286)	(263)
Total	(346)	(321)
Asset-backed Securities
Fair Value
Less than 12 months	341	196
Greater than 12 months	607	2,014
Total	948	2,210
Gross Unrealized Depreciation
Less than 12 months	(3)	(2)
Greater than 12 months	(24)	(49)
Total	(27)	(51)
Commercial
Fair Value
Less than 12 months	194	181
Greater than 12 months	694	742
Total	888	923
Gross Unrealized Depreciation
Less than 12 months	(18)	(19)
Greater than 12 months	(65)	(73)
Total	(83)	(92)
Agency Residential
Fair Value
Less than 12 months	1,853	423
Greater than 12 months	1,567	2,126
Total	3,420	2,549
Gross Unrealized Depreciation
Less than 12 months	(100)	(4)
Greater than 12 months	(203)	(225)
Total	(302)	(229)
Non-agency Residential
Fair Value
Less than 12 months	384	126
Greater than 12 months	60	4
Total	444	130
Gross Unrealized Depreciation
Less than 12 months	(3)	(1)
Greater than 12 months	(2)	0
Total	(5)	0
Foreign government securities
Fair Value
Less than 12 months	713	172
Greater than 12 months	927	985
Total	1,639	1,156
Gross Unrealized Depreciation
Less than 12 months	(24)	(7)
Greater than 12 months	(116)	(101)
Total	(140)	(108)
Foreign corporate securities
Fair Value
Less than 12 months	1,406	324
Greater than 12 months	2,457	2,726
Total	3,864	3,050
Gross Unrealized Depreciation
Less than 12 months	(21)	(6)
Greater than 12 months	(266)	(265)
Total	(287)	(271)
Recorded an Allowance for Credit Losses
Fair Value
Less than 12 months	15	2
Greater than 12 months	2	0
Total	16	2
Gross Unrealized Depreciation
Less than 12 months	(1)	(1)
Greater than 12 months	0	0
Total	$ (1)	$ (1)

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