CAPITAL STOCK - Net Income (loss) Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic:
Income attributable to common stock	$ 145	$ 213
Income (loss) attributable to common stock, shares	382	380
Basic net income (loss) per share (in USD per share)	$ 0.38	$ 0.56
Effect of Dilutive Securities:
Stock options and other (in shares)	2	3
Diluted:
Income attributable to common stock	$ 145	$ 213
Income (loss) attributable to common stock, shares	384	383
Diluted net income (loss) per share (in USD per share)	$ 0.38	$ 0.56