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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Individual Retirement \| GMxB Core
Market Risk Benefit [Roll Forward]
Balance, beginning of period	$ 404	$ 131	$ 590	$ 530
Balance BOP before changes in the instrument specific credit risk	119	351	322	529
Model changes and effect of changes in cash flow assumptions	88	20	86	20
Actual market movement effect	(195)	202	(359)	(128)
Interest accrual	13	22	44	60
Attributed fees accrued	99	100	305	306
Benefit payments	(10)	(11)	(31)	(35)
Actual policyholder behavior different from expected behavior	10	7	24	19
Changes in future economic assumptions	164	(411)	(101)	(488)
Issuances	0	0	(2)	(3)
Balance EOP before changes in the instrument-specific credit risk	288	280	288	280
Changes in the instrument-specific credit risk	279	38	279	38
Balance, end of period	$ 567	$ 318	$ 567	$ 318
Weighted-average age of policyholders (years)	65 years 1 month 6 days	64 years 2 months 12 days	65 years 1 month 6 days	64 years 2 months 12 days
Net amount at risk	$ 2,606	$ 3,598	$ 2,606	$ 3,598
Legacy \| GMxB Legacy
Market Risk Benefit [Roll Forward]
Balance, beginning of period	11,418	12,720	13,418	14,699
Balance BOP before changes in the instrument specific credit risk	10,898	14,142	13,028	15,314
Model changes and effect of changes in cash flow assumptions	(70)	(11)	(78)	(11)
Actual market movement effect	(596)	718	(1,339)	(662)
Interest accrual	141	213	455	604
Attributed fees accrued	201	212	599	630
Benefit payments	(301)	(322)	(933)	(1,008)
Actual policyholder behavior different from expected behavior	(8)	(13)	(31)	1
Changes in future economic assumptions	1,098	(2,609)	(338)	(2,538)
Issuances	0	0	0	0
Balance EOP before changes in the instrument-specific credit risk	11,363	12,330	11,363	12,330
Changes in the instrument-specific credit risk	541	(349)	541	(349)
Balance, end of period	$ 11,904	$ 11,981	$ 11,904	$ 11,981
Weighted-average age of policyholders (years)	73 years 6 months	72 years 10 months 24 days	73 years 6 months	72 years 10 months 24 days
Net amount at risk	$ 18,977	$ 23,123	$ 18,977	$ 23,123
Legacy \| Purchased MRB
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(7,989)	(9,923)	(9,420)	(10,415)
Balance BOP before changes in the instrument specific credit risk	(7,970)	(9,827)	(9,387)	(10,358)
Model changes and effect of changes in cash flow assumptions	(25)	(33)	125	(33)
Actual market movement effect	302	(300)	700	402
Interest accrual	(105)	(150)	(328)	(437)
Attributed fees accrued	(63)	(66)	(199)	(207)
Benefit payments	174	190	505	560
Actual policyholder behavior different from expected behavior	(2)	(2)	(3)	(28)
Changes in future economic assumptions	(771)	1,511	127	1,424
Issuances	0	0	0	0
Balance EOP before changes in the instrument-specific credit risk	(8,460)	(8,677)	(8,460)	(8,677)
Changes in the instrument-specific credit risk	(28)	(61)	(28)	(61)
Balance, end of period	$ (8,488)	$ (8,738)	$ (8,488)	$ (8,738)
Weighted-average age of policyholders (years)	73 years	72 years 6 months	73 years	72 years 6 months
Net amount at risk	$ 10,159	$ 12,188	$ 10,159	$ 12,188
Legacy \| Net Legacy
Market Risk Benefit [Roll Forward]
Balance, beginning of period	3,429	2,797	3,998	4,284
Balance BOP before changes in the instrument specific credit risk	2,928	4,315	3,641	4,956
Model changes and effect of changes in cash flow assumptions	(95)	(44)	47	(44)
Actual market movement effect	(294)	418	(639)	(260)
Interest accrual	36	63	127	167
Attributed fees accrued	138	146	400	423
Benefit payments	(127)	(132)	(428)	(448)
Actual policyholder behavior different from expected behavior	(10)	(15)	(34)	(27)
Changes in future economic assumptions	327	(1,098)	(211)	(1,114)
Issuances	0	0	0	0
Balance EOP before changes in the instrument-specific credit risk	2,903	3,653	2,903	3,653
Changes in the instrument-specific credit risk	513	(410)	513	(410)
Balance, end of period	$ 3,416	$ 3,243	$ 3,416	$ 3,243

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.

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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.

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Reference 1: 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/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 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.

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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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