CAPITAL STOCK - Net Income (Loss) per Common Share (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Basic:
Income attributable to common stock, income	$ 161	$ 983	$ 1,276	$ 3,338
Income attributable to common stock, shares	391	384	388	384
Income attributable to common stock, per share	$ 0.41	$ 2.56	$ 3.29	$ 8.70
Effect of Dilutive Securities:
Mandatory Convertible Preferred Stock, income		19		57
Mandatory Convertible Preferred Stock, shares		14		14
Stock options and other	2	2	2	2
Diluted:
Income attributable to common stock, including assumed conversions, income	$ 161	$ 1,002	$ 1,276	$ 3,395
Income attributable to common stock, including assumed conversions, share	393	400	390	400
Income attributable to common stock, including assumed conversions, per share	$ 0.41	$ 2.50	$ 3.27	$ 8.49