MARKET RISK BENEFITS - Changes in the Market Risk Benefits for Deferred Variable Annuities (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Apr. 01, 2023	Dec. 31, 2022	Dec. 31, 2020
Market Risk Benefit [Roll Forward]
Benefit payments			$ 198	$ 434
Changes in the instrument-specific credit risk							$ 23,416
Liability for market risk benefits	$ 12,995		12,995		$ 8,200	$ 15,751
GMxB Core \| Individual Retirement
Market Risk Benefit [Roll Forward]
Balance, beginning of period	155	$ 424	539	1,061
Beginning balance before changes in the instrument specific credit risk	370	781	538	666
Model changes and effect of changes in cash flow assumptions	12	(7)	12	(7)
Actual market movement effect	193	276	(129)	1,264
Interest accrual	22	12	59	29
Attributed fees accrued	96	97	300	296
Benefit payments	(11)	(11)	(35)	(24)
Actual policyholder behavior different from expected behavior	5	10	13	14
Changes in future economic assumptions	(385)	(440)	(455)	(1,517)
Issuances	0	0	(1)	(3)
Ending balance before changes in the instrument-specific credit risk	302	718	302	718
Changes in the instrument-specific credit risk	35	(307)	35	(307)			2,144
Balance, end of period	$ 337	$ 411	$ 337	$ 411
Weighted-average age of policyholders (years)	64 years 3 months 18 days	63 years 3 months 18 days	64 years 3 months 18 days	63 years 3 months 18 days
Net amount at risk	$ 3,586	$ 3,771	$ 3,586	$ 3,771
Liability for market risk benefits	829		829			914
Purchased MRB Core
Market Risk Benefit [Roll Forward]
Liability for market risk benefits	8,200		8,200
Purchased MRB Core \| Individual Retirement
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(1,071)	0	0	0
Beginning balance before changes in the instrument specific credit risk	(1,072)	0	0	0
Model changes and effect of changes in cash flow assumptions	(45)	0	(45)	0
Actual market movement effect	(197)	0	(92)	0
Interest accrual	(12)	0	(21)	0
Attributed fees accrued	(87)	0	(186)	0
Benefit payments	10	0	22	0
Actual policyholder behavior different from expected behavior	(5)	0	(9)	0
Changes in future economic assumptions	332	0	549	0
Issuances	0	0	(1,294)	0
Ending balance before changes in the instrument-specific credit risk	(1,076)	0	(1,076)	0
Changes in the instrument-specific credit risk	32	0	32	0
Balance, end of period	$ (1,044)	0	$ (1,044)	0
Weighted-average age of policyholders (years)	64 years 7 months 6 days		64 years 7 months 6 days
Net amount at risk	$ 3,475		$ 3,475
Purchased MRB Core \| Legacy Segment
Market Risk Benefit [Roll Forward]
Changes in the instrument-specific credit risk							(3,132)
Net GMxB Core \| Individual Retirement
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(916)	424	539	1,061
Beginning balance before changes in the instrument specific credit risk	(702)	781	538	666
Model changes and effect of changes in cash flow assumptions	(33)	(7)	(33)	(7)
Actual market movement effect	(4)	276	(221)	1,264
Interest accrual	10	12	38	29
Attributed fees accrued	9	97	114	296
Benefit payments	(1)	(11)	(13)	(24)
Actual policyholder behavior different from expected behavior	0	10	4	14
Changes in future economic assumptions	(53)	(440)	94	(1,517)
Issuances	0	0	(1,295)	(3)
Ending balance before changes in the instrument-specific credit risk	(774)	718	(774)	718
Changes in the instrument-specific credit risk	67	(307)	67	(307)
Balance, end of period	(707)	411	(707)	411
GMxB Legacy \| Legacy Segment
Market Risk Benefit [Roll Forward]
Balance, beginning of period	12,720	15,708	14,699	20,236
Beginning balance before changes in the instrument specific credit risk	14,142	17,735	15,314	19,719
Model changes and effect of changes in cash flow assumptions	(11)	404	(11)	317
Actual market movement effect	719	755	(662)	4,414
Interest accrual	212	224	604	507
Attributed fees accrued	212	221	630	659
Benefit payments	(321)	(316)	(1,008)	(849)
Actual policyholder behavior different from expected behavior	(14)	42	1	101
Changes in future economic assumptions	(2,609)	(2,628)	(2,538)	(8,431)
Issuances	0	0	0	0
Ending balance before changes in the instrument-specific credit risk	12,330	16,437	12,330	16,437
Changes in the instrument-specific credit risk	(349)	(1,838)	(349)	(1,838)			$ 24,404
Balance, end of period	$ 11,981	$ 14,599	$ 11,981	$ 14,599
Weighted-average age of policyholders (years)	72 years 10 months 24 days	72 years 3 months 18 days	72 years 10 months 24 days	72 years 3 months 18 days
Net amount at risk	$ 23,123	$ 23,933	$ 23,123	$ 23,933
Liability for market risk benefits	12,110		12,110			$ 14,749
Purchased MRB Legacy
Market Risk Benefit [Roll Forward]
Liability for market risk benefits					$ 8,200
Purchased MRB Legacy \| Legacy Segment
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(16,223)	(11,845)	(10,492)	(14,293)
Beginning balance before changes in the instrument specific credit risk	(16,128)	(11,744)	(10,438)	(14,287)
Model changes and effect of changes in cash flow assumptions	8	(168)	8	(139)
Actual market movement effect	(592)	(268)	386	(1,732)
Interest accrual	(227)	(170)	(585)	(336)
Attributed fees accrued	(153)	(70)	(391)	(218)
Benefit payments	316	184	839	472
Actual policyholder behavior different from expected behavior	3	(32)	(17)	(73)
Changes in future economic assumptions	2,397	1,551	2,687	5,596
Issuances	0	0	(6,865)	0
Ending balance before changes in the instrument-specific credit risk	(14,376)	(10,717)	(14,376)	(10,717)
Changes in the instrument-specific credit risk	(38)	(95)	(38)	(95)
Balance, end of period	$ (14,414)	$ (10,812)	$ (14,414)	$ (10,812)
Weighted-average age of policyholders (years)	73 years 2 months 12 days	67 years 6 months	73 years 2 months 12 days	67 years 6 months
Net amount at risk	$ 22,632	$ 11,589	$ 22,632	$ 11,589
Net GMxB Legacy \| Legacy Segment
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(3,503)	3,863	4,207	5,943
Beginning balance before changes in the instrument specific credit risk	(1,986)	5,991	4,876	5,432
Model changes and effect of changes in cash flow assumptions	(3)	236	(3)	178
Actual market movement effect	127	487	(276)	2,682
Interest accrual	(15)	54	19	171
Attributed fees accrued	59	151	239	441
Benefit payments	(5)	(132)	(169)	(377)
Actual policyholder behavior different from expected behavior	(11)	10	(16)	28
Changes in future economic assumptions	(212)	(1,077)	149	(2,835)
Issuances	0	0	(6,865)	0
Ending balance before changes in the instrument-specific credit risk	(2,046)	5,720	(2,046)	5,720
Changes in the instrument-specific credit risk	(387)	(1,933)	(387)	(1,933)
Balance, end of period	$ (2,433)	$ 3,787	$ (2,433)	$ 3,787

Market Risk Benefit, Increase (Decrease) From Future Economic Assumption

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Weighted-average duration of present value of total expected payment to policyholder in excess of present value of total expected assessment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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Amount, before effect of reinsurance and after accumulated increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 65
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-Topic 944
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amount, after effect of reinsurance and cumulative increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of cash inflow to contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk from attributed fee collected.

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Amount, before effect of reinsurance and cumulative increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of cash outflow to policyholder from benefit payment for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of increase (decrease) in contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk from change associated with actual policyholder behavior different from expected.

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Amount of increase (decrease) in contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk from change in future expected policyholder behavior assumption.

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Amount of interest expense for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of increase in contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk from contract issuance.

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Amount of liability position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of guaranteed benefit in excess of current account balance of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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