OTHER NONCURRENT ASSETS (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
OTHER NONCURRENT ASSETS
Spare parts inventory	$ 13	$ 13
Notes receivable	9	7
Pension assets	1	4
Debt issuance costs	4
Other	11	11
Total	$ 38	$ 35

Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

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Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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Amount of noncurrent assets classified as other.

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Amount of spare parts inventory to produce goods and services and not intended for resale.

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