FAIR VALUE OF FINANCIAL INSTRUMENTS - Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Commercial mortgage loan holdings, net	$ 10,863	$ 10,006
Policy loans	1,527	1,593
Other long-term investments	3,646	3,251
Liabilities:
Stable value product account balances	8,526	6,056
Future policy benefits and claims	15,846	15,478
Other policyholders’ funds	1,820	1,865
Carrying Amounts \| Level 3
Assets:
Commercial mortgage loan holdings, net	10,863	10,006
Policy loans	1,527	1,593
Other long-term investments	1,930	1,186
Liabilities:
Future policy benefits and claims	1,457	1,580
Other policyholders’ funds	102	102
Debt
Subordinated funding obligations	110	110
Fair Value \| Level 3
Assets:
Commercial mortgage loan holdings, net	11,386	10,788
Policy loans	1,527	1,593
Other long-term investments	1,990	1,283
Liabilities:
Stable value product account balances	8,598	6,231
Future policy benefits and claims	1,504	1,603
Other policyholders’ funds	108	108
Debt
Subordinated funding obligations	116	$ 121
Amounts receivable under certain modified coinsurance agreements included in other long-term investments	1,200
Cash surrender value of COLI policies included in other long-term investments	$ 710

Represents the liability as of the balance sheet date of amounts held for annuity contracts.

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

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No definition available.

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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

+ References

No definition available.

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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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
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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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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Fair value portion of other assets.

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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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