FAIR VALUE OF FINANCIAL INSTRUMENTS - Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets:
Commercial mortgage loans on real estate, net	$ 10,137	$ 10,006
Policy loans	1,576	1,593
Other long-term investments	3,223	3,241
Liabilities:
Stable value product account balances	6,655	6,056
Future policy benefits and claims	15,679	15,478
Other policyholders’ funds	1,515	1,865
Level 3 \| Carrying Amounts
Assets:
Commercial mortgage loans on real estate, net	10,137	10,006
Policy loans	1,576	1,593
Other long-term investments	1,190	1,186
Liabilities:
Stable value product account balances	6,655	6,056
Future policy benefits and claims	1,545	1,580
Other policyholders’ funds	105	102
Debt
Subordinated funding obligations	110	110
Level 3 \| Fair Values
Assets:
Commercial mortgage loans on real estate, net	10,862	10,788
Policy loans	1,576	1,593
Other long-term investments	1,251	1,283
Liabilities:
Stable value product account balances	6,762	6,231
Future policy benefits and claims	1,567	1,603
Other policyholders’ funds	112	108
Debt
Subordinated funding obligations	$ 112	$ 121

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- Definition

Represents the liability as of the balance sheet date of amounts related to stable value contracts.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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Amount of long-term investments classified as other.

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Amount due to policyholders for funds held that are returnable under the terms of insurance contracts, classified as other.

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