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Other Non-Current Assets - Other Investment and Other Non Current Assets (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Other Noncurrent Assets [Line Items] |  |
Available-for-sale equity securities | $ 10 | $ 9
Trading equity securities | 8 | 7
Long-term State receivables | 470 | 369
Long-term receivables from third parties | 2 | 12
Long-term loans to affiliates | 28 |
Prepaid for pension | 5 | 1
Deposits and other non-current assets | 37 | 34
Total | $ 560 | $ 432

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