MARKET RISK BENEFITS - Changes in the Market Risk Benefits for Deferred Variable Annuities (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Retirement \| GMxB Core
Market Risk Benefit [Roll Forward]
Balance, beginning of period	$ 804	$ 496
Balance BOP before changes in the instrument specific credit risk	394	163
Model changes and effect of changes in cash flow assumptions	0	0
Actual market movement effect	96	71
Interest accrual	16	15
Attributed fees accrued	97	94
Benefit payments	(12)	(11)
Actual policyholder behavior different from expected behavior	5	13
Changes in future economic assumptions	(22)	147
Issuances	2	3
Balance EOP before changes in the instrument-specific credit risk	576	495
Changes in the instrument-specific credit risk	230	222
Balance, end of period	$ 806	$ 717
Weighted-average age of policyholders (years)	66 years 6 months	65 years 7 months 6 days
Net amount at risk	$ 3,096	$ 3,112
Corporate & Other \| GMxB Legacy
Market Risk Benefit [Roll Forward]
Balance, beginning of period	8,633	10,508
Balance BOP before changes in the instrument specific credit risk	7,925	9,735
Model changes and effect of changes in cash flow assumptions	(37)	(1,344)
Actual market movement effect	303	349
Interest accrual	75	106
Attributed fees accrued	149	165
Benefit payments	(264)	(280)
Actual policyholder behavior different from expected behavior	24	20
Changes in future economic assumptions	(114)	585
Issuances	0	0
Balance EOP before changes in the instrument-specific credit risk	8,061	9,336
Changes in the instrument-specific credit risk	274	169
Balance, end of period	$ 8,335	$ 9,505
Weighted-average age of policyholders (years)	74 years 4 months 24 days	73 years 9 months 18 days
Net amount at risk	$ 15,393	$ 16,915
Corporate & Other \| Purchased MRB
Market Risk Benefit [Roll Forward]
Balance, beginning of period	(5,258)	(7,372)
Balance BOP before changes in the instrument specific credit risk	(5,263)	(7,368)
Model changes and effect of changes in cash flow assumptions	55	1,855
Actual market movement effect	(140)	(116)
Interest accrual	(46)	(64)
Attributed fees accrued	(52)	(60)
Benefit payments	122	129
Actual policyholder behavior different from expected behavior	(15)	0
Changes in future economic assumptions	83	(333)
Issuances	0	0
Balance EOP before changes in the instrument-specific credit risk	(5,256)	(5,957)
Changes in the instrument-specific credit risk	(9)	(16)
Balance, end of period	$ (5,265)	$ (5,973)
Weighted-average age of policyholders (years)	73 years 10 months 24 days	73 years 3 months 18 days
Net amount at risk	$ 6,897	$ 7,541
Corporate & Other \| Net Legacy
Market Risk Benefit [Roll Forward]
Balance, beginning of period	3,375	3,136
Balance BOP before changes in the instrument specific credit risk	2,662	2,367
Model changes and effect of changes in cash flow assumptions	18	511
Actual market movement effect	163	233
Interest accrual	29	42
Attributed fees accrued	97	105
Benefit payments	(142)	(151)
Actual policyholder behavior different from expected behavior	9	20
Changes in future economic assumptions	(31)	252
Issuances	0	0
Balance EOP before changes in the instrument-specific credit risk	2,805	3,379
Changes in the instrument-specific credit risk	265	153
Balance, end of period	$ 3,070	$ 3,532

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

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(5)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480081/944-40-50-6

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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)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29G
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-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 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480112/944-40-45-3

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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
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29G
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

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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.

+ References

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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.

+ References

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- Definition

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.

+ References

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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.

+ References

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

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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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