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Other Income, Net - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Other Non operating Income Expense [Line Items] |  |  |  |
Net loss (gain) from asset sales | $ 124 | $ 41 | $ 152 | $ 69
Disposal of Equity Interests [Member] |  |  |  |
Other Non operating Income Expense [Line Items] |  |  |  |
Net loss (gain) from asset sales |  |  | 27 |
Disposal of Land [Member] |  |  |  |
Other Non operating Income Expense [Line Items] |  |  |  |
Net loss (gain) from asset sales | $ 118 |  | $ 118 | $ 29

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 + Details
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