INVESTMENT CONTRACTS, INSURANCE LIABILITIES AND INSURANCE ANNUITY BENEFITS - Schedule of Insurance and Investment Contract Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Future policy benefit reserves
Life insurance and other contracts	$ 10,125	$ 10,053
Long-term care insurance contracts	9,031	8,688
Future policy benefit reserves	19,156	18,741
Investment contracts	2,606	2,813
Claim reserves	4,927	4,606
Unearned premiums and other	416	386
Insurance and investment contract liabilities before eliminations	27,105	26,546
Eliminations	(508)	(460)
Total	26,597	26,086
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Claim reserves related to long-term care insurance contracts	$ 4,927	$ 4,606
Minimum
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Estimated yield (as a percent)	3.00%	3.00%
Maximum
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Estimated yield (as a percent)	8.50%	8.50%
Long-term care insurance
Future policy benefit reserves
Claim reserves	$ 3,431	$ 3,129
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]
Claim reserves related to long-term care insurance contracts	$ 3,431	$ 3,129

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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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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Estimated average rate of return on investments which is included in the calculation of the amount of the specified guaranteed benefit obligation as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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