INVESTMENTS - Summary of Aggregate Market Value and Gross Unrealized Depreciation of Fixed Maturity and Equity Securities, by Contractual Maturity (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 3,093	$ 8,524
Greater than 12 months	8,406	2,698
Total	11,499	11,222
Gross Unrealized Depreciation
Less than 12 months	(127)	(591)
Greater than 12 months	(792)	(421)
Total	(919)	(1,013)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	3,092	8,522
Greater than 12 months	8,406	2,698
Total	11,498	11,220
Gross Unrealized Depreciation
Less than 12 months	(126)	(591)
Greater than 12 months	(792)	(421)
Total	(918)	(1,012)
Due in one year or less
Fair Value
Less than 12 months	214	463
Greater than 12 months	473	29
Total	687	491
Gross Unrealized Depreciation
Less than 12 months	(3)	(8)
Greater than 12 months	(15)	(4)
Total	(18)	(11)
Due in one year through five years
Fair Value
Less than 12 months	533	2,020
Greater than 12 months	2,413	936
Total	2,946	2,956
Gross Unrealized Depreciation
Less than 12 months	(16)	(143)
Greater than 12 months	(228)	(107)
Total	(244)	(250)
Due in five years through ten years
Fair Value
Less than 12 months	405	1,162
Greater than 12 months	1,140	395
Total	1,545	1,557
Gross Unrealized Depreciation
Less than 12 months	(16)	(148)
Greater than 12 months	(186)	(98)
Total	(203)	(246)
Due after ten years
Fair Value
Less than 12 months	491	439
Greater than 12 months	304	262
Total	795	701
Gross Unrealized Depreciation
Less than 12 months	(60)	(50)
Greater than 12 months	(52)	(64)
Total	(112)	(114)
Asset Backed Securities
Fair Value
Less than 12 months	1,058	3,120
Greater than 12 months	2,426	436
Total	3,484	3,556
Gross Unrealized Depreciation
Less than 12 months	(23)	(138)
Greater than 12 months	(88)	(27)
Total	(111)	(165)
Mortgage-backed securities
Fair Value
Less than 12 months	393	1,318
Greater than 12 months	1,649	641
Total	2,041	1,959
Gross Unrealized Depreciation
Less than 12 months	(7)	(105)
Greater than 12 months	(223)	(122)
Total	(230)	(226)
Securities where an allowance for credit loss was recorded
Fair Value
Less than 12 months	0	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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