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Net Income (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		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Net income (loss) attributable to Company	$ 1	$ (26)	$ (43)	$ (223)
Denominator:
Basic—weighted average common shares outstanding	379	377	378	377
Dilutive effect of employee stock options and other unvested stock awards	4
Diluted outstanding shares	383	377	378	377
Basic	$ 0.00	$ (0.07)	$ (0.11)	$ (0.59)
Diluted	0.00	(0.07)	(0.11)	(0.59)
Cash dividends per share	$ 0.05	$ 0.05	$ 0.15	$ 0.15

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

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