INVESTMENT CONTRACTS, INSURANCE LIABILITIES AND INSURANCE ANNUITY BENEFITS - Schedule of Investment Contracts, Insurance Liabilities and Insurance Annuity Benefits (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Future policy benefit reserves
Long-term care insurance contracts	$ 16,522	$ 7,629
Structured settlement annuities with life contingencies and other contracts	9,448	9,267
Shadow adjustments	4,582	1,845
Future policy benefit reserves	30,552	18,741
Investment contracts	2,569	2,813
Claim reserves	5,094	4,606
Unearned premiums and other	372	386
Future policy benefit reserves, investment contracts, claim reserves and unearned premiums and other	38,587	26,546
Eliminations	(451)	(460)
Total	38,136	26,086
Long Term-Care Insurance Contracts
Future policy benefit reserves
Claim reserves	3,590	3,129
Short-Duration Insurance Contracts
Future policy benefit reserves
Claim reserves	$ 364	$ 362

The amount of the liability as of the balance sheet date pertaining to the guarantee given by the insurance entity to contract holders of a specified rate of return (a guaranteed yield) on their investments for a specified period.

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The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

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Amount of accrued obligation to policyholders that relates to insured events for long-duration contracts.

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The aggregate amount of policy reserves (provided for future obligations including unpaid claims and claims adjustment expenses) and policy benefits (liability for future policy benefits) as of the balance sheet date; grouped amount of all the liabilities associated with the company's insurance policies.

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Amount of accrued obligation to policyholders that relates to insured events under individual and group annuities and supplementary insurance contracts.

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Amount of accrued obligation to policyholders that relates to insured events under long-term life insurance contracts.

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Amount of accrued obligation to policyholders that relates to insured events under other insurance contracts.

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Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement.

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Amount of aggregate reconciling items for the reconciliation of the liability in the disclosure of claims development (in excess of) less than the liability for unpaid claims and claims adjustment expense for short-duration insurance contracts.

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Amount of liability for unallocated claim adjustment expense for short-duration insurance contracts.

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