INVESTMENTS - Summary of Fixed Maturity and Equity Securities by Contractual Maturity (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 6,347	$ 15,215
Greater than 12 months	15,099	4,432
Total	21,445	19,647
Gross Unrealized Depreciation
Less than 12 months	(320)	(1,217)
Greater than 12 months	(1,823)	(764)
Total	(2,143)	(1,982)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	6,346	15,213
Greater than 12 months	15,098	4,432
Total	21,445	19,645
Gross Unrealized Depreciation
Less than 12 months	(320)	(1,217)
Greater than 12 months	(1,822)	(764)
Total	(2,141)	(1,982)
Due in one year or less
Fair Value
Less than 12 months	169	989
Greater than 12 months	1,259	40
Total	1,428	1,029
Gross Unrealized Depreciation
Less than 12 months	(3)	(19)
Greater than 12 months	(45)	(7)
Total	(48)	(26)
Due in one year through five years
Fair Value
Less than 12 months	1,634	4,935
Greater than 12 months	5,425	1,645
Total	7,059	6,580
Gross Unrealized Depreciation
Less than 12 months	(51)	(383)
Greater than 12 months	(567)	(209)
Total	(618)	(592)
Due in five years through ten years
Fair Value
Less than 12 months	1,263	2,698
Greater than 12 months	2,662	911
Total	3,925	3,609
Gross Unrealized Depreciation
Less than 12 months	(67)	(360)
Greater than 12 months	(533)	(230)
Total	(601)	(590)
Due after ten years
Fair Value
Less than 12 months	914	672
Greater than 12 months	549	408
Total	1,464	1,080
Gross Unrealized Depreciation
Less than 12 months	(98)	(91)
Greater than 12 months	(139)	(116)
Total	(237)	(207)
Asset-backed Securities
Fair Value
Less than 12 months	846	3,204
Greater than 12 months	2,245	456
Total	3,091	3,661
Gross Unrealized Depreciation
Less than 12 months	(20)	(142)
Greater than 12 months	(48)	(29)
Total	(69)	(171)
Mortgage-backed securities
Fair Value
Less than 12 months	1,519	2,715
Greater than 12 months	2,959	972
Total	4,478	3,687
Gross Unrealized Depreciation
Less than 12 months	(81)	(222)
Greater than 12 months	(488)	(173)
Total	(569)	(395)
Recorded an Allowance for Credit Losses
Fair Value
Less than 12 months	0	2
Greater than 12 months	0	0
Total	1	2
Gross Unrealized Depreciation
Less than 12 months	(1)	0
Greater than 12 months	(1)	0
Total	$ (2)	$ 0

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