FAIR VALUE DISCLOSURES - Carrying Values And Fair Values Of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Consolidated Amounts [Abstract]
Mortgage loans on real estate	$ 18,024	$ 17,877
Policy loans	3,693	3,667
Policyholders’ liabilities: Investment contracts	84,129	82,990
Funds withheld payable	9,755	10,603
Modco payable	34,400
Separate Accounts liabilities	126,905	121,497
Carrying Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	18,024	17,877
Policy loans	3,693	3,667
Policyholders’ liabilities: Investment contracts	1,502	1,554
Funds withheld payable	9,784	10,503
Modco payable	31,045	29,912
FHLB funding agreements	7,168	7,618
FABN funding agreements	6,252	6,267
Funding agreement-backed commercial paper (FABCP)	663	939
Separate Accounts liabilities	10,812	10,343
Carrying Value \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	1,900	1,900
Fair Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	16,250	16,174
Policy loans	3,931	3,961
Policyholders’ liabilities: Investment contracts	1,456	1,526
Funds withheld payable	9,784	10,503
Modco payable	31,045	29,912
FHLB funding agreements	7,086	7,567
FABN funding agreements	5,839	5,840
Funding agreement-backed commercial paper (FABCP)	675	948
Separate Accounts liabilities	10,812	10,343
Fair Value \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	1,776	1,790
Fair Value \| Level 1
Consolidated Amounts [Abstract]
Mortgage loans on real estate	0	0
Policy loans	0	0
Policyholders’ liabilities: Investment contracts	0	0
Funds withheld payable	0	0
Modco payable	0	0
FHLB funding agreements	0	0
FABN funding agreements	0	0
Funding agreement-backed commercial paper (FABCP)	0	0
Separate Accounts liabilities	0	0
Fair Value \| Level 1 \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	0	0
Fair Value \| Level 2
Consolidated Amounts [Abstract]
Mortgage loans on real estate	0	0
Policy loans	0	0
Policyholders’ liabilities: Investment contracts	0	0
Funds withheld payable	0	0
Modco payable	0	0
FHLB funding agreements	7,086	7,567
FABN funding agreements	5,839	5,840
Funding agreement-backed commercial paper (FABCP)	675	948
Separate Accounts liabilities	0	0
Fair Value \| Level 2 \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	1,776	1,790
Fair Value \| Level 3
Consolidated Amounts [Abstract]
Mortgage loans on real estate	16,250	16,174
Policy loans	3,931	3,961
Policyholders’ liabilities: Investment contracts	1,456	1,526
Funds withheld payable	9,784	10,503
Modco payable	31,045	29,912
FHLB funding agreements	0	0
FABN funding agreements	0	0
Funding agreement-backed commercial paper (FABCP)	0	0
Separate Accounts liabilities	10,812	10,343
Fair Value \| Level 3 \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	$ 0	$ 0

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Amount of Federal Home Loan Bank (FHLBank) advances to member financial institutions.

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Amount of funds held as security for payments to be received under reinsurance contracts.

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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.

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