INVESTMENTS - Summary of Fixed Maturity and Equity Securities by Security Type (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 7,961	$ 15,215
Greater than 12 months	11,591	4,432
Total	19,551	19,647
Gross Unrealized Depreciation
Less than 12 months	(296)	(1,217)
Greater than 12 months	(1,420)	(764)
Total	(1,716)	(1,982)
No Recorded Allowance for Credit Losses
Fair Value
Less than 12 months	7,958	15,213
Greater than 12 months	11,590	4,432
Total	19,548	19,645
Gross Unrealized Depreciation
Less than 12 months	(295)	(1,217)
Greater than 12 months	(1,419)	(764)
Total	(1,714)	(1,982)
U.S. Treasury securities and obligations of U.S. government agencies and corporations
Fair Value
Less than 12 months	359	668
Greater than 12 months	764	487
Total	1,124	1,155
Gross Unrealized Depreciation
Less than 12 months	(10)	(31)
Greater than 12 months	(59)	(52)
Total	(69)	(82)
Obligations of U.S. states and political subdivisions
Fair Value
Less than 12 months	113	235
Greater than 12 months	119	27
Total	232	261
Gross Unrealized Depreciation
Less than 12 months	(6)	(23)
Greater than 12 months	(22)	(9)
Total	(28)	(32)
Corporate securities
Fair Value
Less than 12 months	2,358	4,143
Greater than 12 months	3,177	1,316
Total	5,536	5,459
Gross Unrealized Depreciation
Less than 12 months	(89)	(326)
Greater than 12 months	(407)	(234)
Total	(496)	(561)
Asset-backed securities
Fair Value
Less than 12 months	1,644	3,204
Greater than 12 months	1,881	456
Total	3,525	3,661
Gross Unrealized Depreciation
Less than 12 months	(37)	(142)
Greater than 12 months	(92)	(29)
Total	(129)	(171)
Commercial
Fair Value
Less than 12 months	317	806
Greater than 12 months	634	101
Total	951	907
Gross Unrealized Depreciation
Less than 12 months	(20)	(90)
Greater than 12 months	(82)	(15)
Total	(102)	(105)
Agency residential
Fair Value
Less than 12 months	1,270	1,905
Greater than 12 months	1,373	870
Total	2,643	2,776
Gross Unrealized Depreciation
Less than 12 months	(49)	(132)
Greater than 12 months	(195)	(158)
Total	(244)	(289)
Non-agency residential
Fair Value
Less than 12 months	1	4
Greater than 12 months	4	1
Total	4	4
Gross Unrealized Depreciation
Less than 12 months	0	0
Greater than 12 months	(1)	(1)
Total	(1)	0
Foreign government securities
Fair Value
Less than 12 months	392	985
Greater than 12 months	895	321
Total	1,287	1,306
Gross Unrealized Depreciation
Less than 12 months	(17)	(100)
Greater than 12 months	(136)	(79)
Total	(153)	(179)
Foreign corporate securities
Fair Value
Less than 12 months	1,504	3,264
Greater than 12 months	2,743	853
Total	4,247	4,117
Gross Unrealized Depreciation
Less than 12 months	(67)	(372)
Greater than 12 months	(425)	(189)
Total	(492)	(561)
Recorded an Allowance for Credit Losses
Fair Value
Less than 12 months	3	2
Greater than 12 months	0	0
Total	3	2
Gross Unrealized Depreciation
Less than 12 months	(1)	0
Greater than 12 months	(1)	0
Total	$ (2)	$ 0

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