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, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Retirement \| GMxB Core
Market Risk Benefit [Roll Forward]
Balance, beginning of period	$ 603	$ 653	$ 804	$ 496
Balance BOP before changes in the instrument specific credit risk	322	385	394	163
Model changes and effect of changes in cash flow assumptions	(63)	45	(47)	38
Actual market movement effect	95	(200)	(148)	(302)
Interest accrual	15	14	45	39
Attributed fees accrued	101	101	308	304
Benefit payments	(12)	(10)	(36)	(33)
Actual policyholder behavior different from expected behavior	6	3	17	23
Changes in future economic assumptions	(328)	9	(399)	114
Issuances	(2)	0	0	1
Balance EOP before changes in the instrument specific credit risk	134	347	134	347
Changes in the instrument-specific credit risk	181	401	181	401
Balance, end of period	$ 315	$ 748	$ 315	$ 748
Weighted-average age of policyholders (years)	67 years	66 years 1 month 6 days	67 years	66 years 1 month 6 days
Net amount at risk	$ 3,046	$ 2,806	$ 3,046	$ 2,806
Corporate & Other \| GMxB Legacy
Market Risk Benefit [Roll Forward]
Balance, beginning of period	7,356	8,812	8,633	10,508
Balance BOP before changes in the instrument specific credit risk	6,935	8,486	7,925	9,735
Model changes and effect of changes in cash flow assumptions	93	59	56	(1,277)
Actual market movement effect	192	(528)	(523)	(799)
Interest accrual	72	84	213	286
Attributed fees accrued	151	161	450	487
Benefit payments	(235)	(255)	(762)	(820)
Actual policyholder behavior different from expected behavior	11	8	52	50
Changes in future economic assumptions	(1,112)	138	(1,304)	491
Issuances	0	0	0	0
Balance EOP before changes in the instrument specific credit risk	6,107	8,153	6,107	8,153
Changes in the instrument-specific credit risk	223	678	223	678
Balance, end of period	$ 6,330	$ 8,831	$ 6,330	$ 8,831
Weighted-average age of policyholders (years)	74 years 8 months 12 days	74 years 1 month 6 days	74 years 8 months 12 days	74 years 1 month 6 days
Net amount at risk	$ 13,825	$ 15,028	$ 13,825	$ 15,028
Corporate & Other \| Purchased MRB
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(4,710)	(5,541)	(5,258)	(7,372)
Balance BOP before changes in the instrument specific credit risk	(4,705)	(5,531)	(5,263)	(7,368)
Model changes and effect of changes in cash flow assumptions	(63)	(57)	(8)	1,803
Actual market movement effect	(67)	235	238	383
Interest accrual	(48)	(52)	(137)	(174)
Attributed fees accrued	(41)	(43)	(130)	(142)
Benefit payments	114	120	352	377
Actual policyholder behavior different from expected behavior	(11)	(6)	(32)	(20)
Changes in future economic assumptions	643	(82)	802	(275)
Issuances	0	0	0	0
Balance EOP before changes in the instrument specific credit risk	(4,178)	(5,416)	(4,178)	(5,416)
Changes in the instrument-specific credit risk	(11)	3	(11)	3
Balance, end of period	$ (4,189)	$ (5,413)	$ (4,189)	$ (5,413)
Weighted-average age of policyholders (years)	74 years 1 month 6 days	73 years 7 months 6 days	74 years 1 month 6 days	73 years 7 months 6 days
Net amount at risk	$ 6,202	$ 6,756	$ 6,202	$ 6,756
Corporate & Other \| Net Legacy
Market Risk Benefit [Roll Forward]
Balance, beginning of period	2,646	3,271	3,375	3,136
Balance BOP before changes in the instrument specific credit risk	2,230	2,955	2,662	2,367
Model changes and effect of changes in cash flow assumptions	30	2	48	526
Actual market movement effect	125	(293)	(285)	(416)
Interest accrual	24	32	76	112
Attributed fees accrued	110	118	320	345
Benefit payments	(121)	(135)	(410)	(443)
Actual policyholder behavior different from expected behavior	0	2	20	30
Changes in future economic assumptions	(469)	56	(502)	216
Issuances	0	0	0	0
Balance EOP before changes in the instrument specific credit risk	1,929	2,737	1,929	2,737
Changes in the instrument-specific credit risk	212	681	212	681
Balance, end of period	$ 2,141	$ 3,418	$ 2,141	$ 3,418

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 reported fact of one year, five months, and thirteen days. Excludes benefit classified as market risk benefit or under provision of Topic 815 on derivative and hedging.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 6
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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
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (h)(1)
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-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

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-Topic 944
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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
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 7B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
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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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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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