INVESTMENTS - Summary of Fixed Maturity and Equity Securities by Security Type (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 6,007	$ 15,215
Greater than 12 months	14,734	4,432
Total	20,741	19,647
Gross Unrealized Depreciation
Less than 12 months	(252)	(1,217)
Greater than 12 months	(1,631)	(764)
Total	(1,883)	(1,982)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	6,004	15,213
Greater than 12 months	14,734	4,432
Total	20,738	19,645
Gross Unrealized Depreciation
Less than 12 months	(250)	(1,217)
Greater than 12 months	(1,630)	(764)
Total	(1,881)	(1,982)
U.S. Treasury securities and obligations of U.S. government agencies and corporations
Fair Value
Less than 12 months	198	668
Greater than 12 months	877	487
Total	1,075	1,155
Gross Unrealized Depreciation
Less than 12 months	(12)	(31)
Greater than 12 months	(70)	(52)
Total	(82)	(82)
Obligations of U.S. states and political subdivisions
Fair Value
Less than 12 months	77	235
Greater than 12 months	199	27
Total	276	261
Gross Unrealized Depreciation
Less than 12 months	(1)	(23)
Greater than 12 months	(29)	(9)
Total	(30)	(32)
Corporate Securities
Fair Value
Less than 12 months	1,877	4,143
Greater than 12 months	3,982	1,316
Total	5,859	5,459
Gross Unrealized Depreciation
Less than 12 months	(114)	(326)
Greater than 12 months	(438)	(234)
Total	(553)	(561)
Asset-backed Securities
Fair Value
Less than 12 months	1,120	3,204
Greater than 12 months	2,490	456
Total	3,610	3,661
Gross Unrealized Depreciation
Less than 12 months	(24)	(142)
Greater than 12 months	(93)	(29)
Total	(117)	(171)
Commercial
Fair Value
Less than 12 months	87	806
Greater than 12 months	873	101
Total	961	907
Gross Unrealized Depreciation
Less than 12 months	(2)	(90)
Greater than 12 months	(110)	(15)
Total	(113)	(105)
Agency Residential
Fair Value
Less than 12 months	1,067	1,905
Greater than 12 months	1,948	870
Total	3,015	2,776
Gross Unrealized Depreciation
Less than 12 months	(33)	(132)
Greater than 12 months	(259)	(158)
Total	(292)	(289)
Non-agency Residential
Fair Value
Less than 12 months	57	4
Greater than 12 months	4	1
Total	61	4
Gross Unrealized Depreciation
Less than 12 months	(1)	0
Greater than 12 months	0	(1)
Total	(1)	0
Foreign government securities
Fair Value
Less than 12 months	353	985
Greater than 12 months	1,043	321
Total	1,396	1,306
Gross Unrealized Depreciation
Less than 12 months	(13)	(100)
Greater than 12 months	(152)	(79)
Total	(165)	(179)
Foreign corporate securities
Fair Value
Less than 12 months	1,169	3,264
Greater than 12 months	3,317	853
Total	4,486	4,117
Gross Unrealized Depreciation
Less than 12 months	(50)	(372)
Greater than 12 months	(479)	(189)
Total	(530)	(561)
Recorded an Allowance for Credit Losses
Fair Value
Less than 12 months	2	2
Greater than 12 months	0	0
Total	3	2
Gross Unrealized Depreciation
Less than 12 months	(2)	0
Greater than 12 months	(1)	0
Total	$ (2)	$ 0

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