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Other Non-Current Assets - Other Non-Current Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Available-for-sale equity securities	$ 11	$ 11
Trading equity securities	8	8
Long-term State receivables	403	513
Long-term receivables from third parties	1	5
Prepaid for pension	8	9
Deposits and other non-current assets	28	30
Total	$ 459	$ 576

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Equity securities categorized neither as held-to-maturity nor trading which are intended be sold more than one year from the balance sheet date or operating cycle, if longer.

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The amount for overfunded plans recognized in the balance sheet as a noncurrent asset associated with a defined benefit pension plan or other postretirement defined benefit plan.

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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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Fair value of investments in trading equity securities and other forms of trading securities that provide ownership interests.

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