FAIR VALUE DISCLOSURES - Carrying Values And Fair Values Of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Apr. 01, 2023	Dec. 31, 2022
Consolidated Amounts [Abstract]
Policy loans	$ 268		$ 244
Funds withheld receivable	10,603	$ 11,200	0
Modco receivable		$ 28,800
Policyholders’ liabilities: Investment contracts	24,963		3,751
Separate Accounts liabilities	5,754		3,374
Carrying Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	294		17
Policy loans	268		244
Funds withheld receivable	10,503		0
Modco receivable	29,912		0
Policyholders’ liabilities: Investment contracts	110		115
Separate Accounts liabilities	372		0
Fair Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	297		15
Policy loans	275		248
Funds withheld receivable	10,503		0
Modco receivable	29,912		0
Policyholders’ liabilities: Investment contracts	108		106
Separate Accounts liabilities	372		0
Fair Value \| Level 1
Consolidated Amounts [Abstract]
Mortgage loans on real estate	0		0
Policy loans	0		0
Funds withheld receivable	0		0
Modco receivable	0		0
Policyholders’ liabilities: Investment contracts	0		0
Separate Accounts liabilities	0		0
Fair Value \| Level 2
Consolidated Amounts [Abstract]
Mortgage loans on real estate	0		0
Policy loans	0		0
Funds withheld receivable	0		0
Modco receivable	0		0
Policyholders’ liabilities: Investment contracts	0		0
Separate Accounts liabilities	0		0
Fair Value \| Level 3
Consolidated Amounts [Abstract]
Mortgage loans on real estate	297		15
Policy loans	275		248
Funds withheld receivable	10,503		0
Modco receivable	29,912		0
Policyholders’ liabilities: Investment contracts	108		106
Separate Accounts liabilities	$ 372		$ 0

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- Definition

Modco Receivable, Fair Value Disclosure

+ References

No definition available.

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- Definition

Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations thereunder.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(10))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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Amount before allowance of loans made to policy and contract holders using their life insurance contracts' cash value or separate accounts as collateral. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums over and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 210
-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.7-03(a)(1)(e))
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- Definition

Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column G))
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- Definition

Amount of liability due to policyholder for deposit held under long-duration contract issued by insurance entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
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-Subparagraph (a)
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Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
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