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Investments in Equity-Accounted Investees - Changes in Investments in Equity-Accounted Investees (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Investments in Equity Accounted Investees [Line Items] |  |  |
Balance as of January 1 | $ 37 |  |
Acquisitions/additions |  |  |
Deductions |  |  |
Share in income (loss) | 7 | (77) | (86)
Translation and exchange rate differences | 1 |  |
Balance as of December 31 | $ 45 | $ 37 |

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- Definition The amount of acquisitions and other additions to items reported as equity method investment. + References No definition available. + Details
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- Definition The amount of divestments and impairments and other deductions to items reported as equity method investment. + References No definition available. + Details
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- Definition Increase Decrease In Equity Method Investment Due To Foreign Currency Translation Adjustment + References No definition available. + Details
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- Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Also included are the recycled foreign currency results earlier recognized in OCI when the investee is sold. + References No definition available. + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570 + Details
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