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Other Non-Current Assets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Other Investments and Other-Non-Current Assets
Available-for-sale equity securities	$ 9	$ 11
Held-for-trading equity securities	7	7
Long-term State receivables	366	286
Long-term receivables from third parties	12	19
Prepaid for pension	1	4
Derivative instruments designated as cash flow-hedge	0	6
Deposits and other non-current assets	37	23
Total	$ 432	$ 356

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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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