FAIR VALUE DISCLOSURES - Carrying Values And Fair Values Of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Apr. 01, 2023	Dec. 31, 2022
Consolidated Amounts [Abstract]
Mortgage loans on real estate	$ 17,586		$ 16,464
Policy loans	3,607		3,563
Policyholders’ liabilities: Investment contracts	82,152		79,742
Funds withheld payable	10,550	$ 11,200	0
Reinsurance Recoverable for Paid Claims and Claims Adjustments	21,512	$ 14,200	7,131
Modco payable	32,200
Separate Accounts liabilities	112,787		111,479
Carrying Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	17,586		16,464
Policy loans	3,607		3,563
Policyholders’ liabilities: Investment contracts	1,594		1,801
Funds withheld payable	11,116		0
Modco payable	29,053		0
FHLB funding agreements	8,178		8,505
FABN funding agreements	6,717		7,095
Funding agreement-backed commercial paper (FABCP)	788
Separate Accounts liabilities	10,117		10,236
Carrying Value \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	1,900		1,900
Fair Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	15,393		14,675
Policy loans	3,773		3,850
Policyholders’ liabilities: Investment contracts	1,417		1,645
Funds withheld payable	11,116		0
Modco payable	29,053		0
FHLB funding agreements	8,074		8,390
FABN funding agreements	6,104		6,384
Funding agreement-backed commercial paper (FABCP)	788
Separate Accounts liabilities	10,117		10,236
Fair Value \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	1,726		1,755
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
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	8,074		8,390
FABN funding agreements	6,104		6,384
Funding agreement-backed commercial paper (FABCP)	788
Separate Accounts liabilities	0		0
Fair Value \| Level 2 \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	1,726		1,755
Fair Value \| Level 3
Consolidated Amounts [Abstract]
Mortgage loans on real estate	15,393		14,675
Policy loans	3,773		3,850
Policyholders’ liabilities: Investment contracts	1,417		1,645
Funds withheld payable	11,116		0
Modco payable	29,053		0
FHLB funding agreements	0		0
FABN funding agreements	0		0
Funding agreement-backed commercial paper (FABCP)	0
Separate Accounts liabilities	10,117		10,236
Fair Value \| Level 3 \| Affiliated Entity
Consolidated Amounts [Abstract]
Loans to affiliates	$ 0		$ 0

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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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