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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		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator for basic and diluted net loss per share attributable to the Company's stockholders:
Net loss	$ (44)	$ (19)	$ (107)	$ (29)
Less: net loss attributable to nonvested shares				1
Net loss attributable to the Company's stockholders	$ (44)	$ (19)	$ (107)	$ (28)
Denominator for basic loss per share attributable to the Company's stockholders:
Weighted-average common shares outstanding, basic	107,442,304	107,178,567	107,357,620	107,147,086
Effect of dilutive securities:
Denominator for diluted loss per share attributable to the Company's stockholders	107,442,304	107,178,567	107,357,620	107,147,086
Basic loss per common share	$ (0.40)	$ (0.18)	$ (0.99)	$ (0.27)
Diluted loss per common share	$ (0.40)	$ (0.18)	$ (0.99)	$ (0.27)

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Net income loss attributable to nonvested shares.

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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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