FAIR VALUE DISCLOSURES - Carrying Values And Fair Values Of Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Consolidated Amounts [Abstract]
Mortgage loans on real estate	$ 12,506	$ 12,090
Policy loans	3,225	3,270
Policyholders’ liabilities: Investment contracts	55,732	55,421
Separate Accounts liabilities	116,768	124,646
Carrying Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	12,506	12,090
Policy loans	3,225	3,270
Loans to affiliates	1,200	1,200
Policyholders’ liabilities: Investment contracts	2,047	1,922
FHLBNY funding agreements	6,700	6,909
Separate Accounts liabilities	8,445	9,041
Fair Value
Consolidated Amounts [Abstract]
Mortgage loans on real estate	12,572	12,317
Policy loans	4,390	4,199
Loans to affiliates	1,245	1,224
Policyholders’ liabilities: Investment contracts	2,293	2,029
FHLBNY funding agreements	6,793	6,957
Separate Accounts liabilities	8,445	9,041
Fair Value \| Level 1
Consolidated Amounts [Abstract]
Mortgage loans on real estate	0	0
Policy loans	0	0
Loans to affiliates	0	0
Policyholders’ liabilities: Investment contracts	0	0
FHLBNY funding agreements	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
Loans to affiliates	1,245	1,224
Policyholders’ liabilities: Investment contracts	0	0
FHLBNY funding agreements	6,793	6,957
Separate Accounts liabilities	0	0
Fair Value \| Level 3
Consolidated Amounts [Abstract]
Mortgage loans on real estate	12,572	12,317
Policy loans	4,390	4,199
Loans to affiliates	0	0
Policyholders’ liabilities: Investment contracts	2,293	2,029
FHLBNY funding agreements	0	0
Separate Accounts liabilities	$ 8,445	$ 9,041

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For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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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.

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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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