Capital Stock - Net Income Per Common Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Income from continuing operations	$ 753	$ 759
Loss from discontinued operations	(517)	(61)
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	236	698
Mandatory Convertible Preferred Stock		19
Income from continuing operations	753	778
Loss from discontinued operations	(517)	(61)
Net income attributable to common stock	$ 236	$ 717
Income from continuing operations, shares	394	392
Loss from discontinued operations, shares	394	392
Net income attributable to common stock, shares	394	392
Mandatory Convertible Preferred Stock		14
Stock options and other	2	2
Income from continuing operations, shares	396	408
Loss from discontinued operations, shares	396	408
Net income attributable to common stock	396	408
Basic net income from continuing operations per share	$ 1.92	$ 1.94
Basic net loss from discontinued operations per share	$ (1.32)	$ (0.16)
Net income attributable to common stock, per share	$ 0.60	$ 1.78
Diluted net income from continuing operations per share	$ 1.90	$ 1.91
Diluted net loss from discontinued operations per share	$ (1.30)	$ (0.15)
Net income attributable to common stock	$ 0.60	$ 1.76