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Net Loss Attributable to Company Per Share - Computation of Weighted Average Basic and Diluted Shares Outstanding (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net loss attributable to Company	$ (68)	$ (122)
Denominator:
Basic-weighted average common shares outstanding	377	376
Dilutive effect of employee stock options and other unvested stock awards	0	0
Diluted outstanding shares	377	376
Cash dividends per share	$ 0.05	$ 0.05
Basic	(0.18)	(0.32)
Diluted	$ (0.18)	$ (0.32)

X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

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