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Loss Per Share ("EPS") - Computation of Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net loss attributable to the Company's stockholders	$ (9)	$ (56)	$ (49)	$ (163)
Denominator:
Weighted-average common shares outstanding, basic	107,752,427	107,473,952	107,695,277	107,396,681
Effect of dilutive securities
Weighted-average common shares outstanding, diluted	107,752,427	107,473,952	107,695,277	107,396,681
Basic loss per common share	$ (0.08)	$ (0.53)	$ (0.45)	$ (1.52)
Diluted loss per common share	$ (0.08)	$ (0.53)	$ (0.45)	$ (1.52)

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Net income loss attributable to shareholders.

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Net income loss available to common stockholders basic and diluted.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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