Supplemental Financial Information - Results Relating to Equity-Accounted Investees (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Equity Method Investments and Joint Ventures [Abstract] | |||
| Company's share in income (loss) | $ 11 | $ 8 | $ 8 |
| Other results | 1 | ||
| Results relating to equity-accounted investees | $ 11 | $ 9 | $ 8 |
| X | ||||||||||
- Definition Extraordinary Income (Loss) From Equity Method Investments No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|