CAPITAL STOCK - Net Income (loss) Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic:
Income (loss) from continuing operations	$ 63	$ (574)	$ 848	$ (1,190)
Loss from discontinued operations	0	(33)	0	(33)
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ 63	$ (607)	$ 848	$ (1,223)
Income (loss) from continuing operations, shares	381	380	381	379
Loss from discontinued operations, shares	381	380	381	379
Income (loss) attributable to common stock, shares	381	380	381	379
Income (loss) from continuing operations (in USD per share)	$ 0.16	$ (1.51)	$ 2.23	$ (3.14)
Loss from discontinued operations (in USD per share)	0.00	(0.09)	0.00	(0.08)
Basic net income (loss) per share (in USD per share)	$ 0.16	$ (1.60)	$ 2.23	$ (3.22)
Effect of Dilutive Securities:
Stock options and other, shares	2		2
Stock options and other (in USD per share)			$ (0.01)
Diluted:
Income (loss) from continuing operations	$ 63	$ (574)	$ 848	$ (1,190)
Loss from discontinued operations	0	(33)	0	(33)
Income (loss) attributable to common stock	$ 63	$ (607)	$ 848	$ (1,223)
Income (loss) from continuing operations, shares	383	380	383	379
Loss from discontinued operations, shares	383	380	383	379
Income (loss) attributable to common stock, shares	383	380	383	379
Income (loss) from continuing operations (in USD per share)	$ 0.16	$ (1.51)	$ 2.22	$ (3.14)
Loss from discontinued operations (in USD per share)	0.00	(0.09)	0.00	(0.08)
Diluted net income (loss) per share (in USD per share)	$ 0.16	$ (1.60)	$ 2.22	$ (3.22)