NET INCOME PER SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Notes to Financial Statements [Abstract]
Net Income	$ 152	$ (140)	$ 161	$ 5	$ 131	$ 205	$ 112	$ 11	$ 178	$ 459	$ 99
Weighted average shares outstanding, basic									774	746	741
Dilutive effect of Employee stock options (in millions of shares)									1	1	0
Weighted Average Number of Shares Outstanding, Diluted									775	747	741
NET INCOME (LOSS) PER SHARE [Abstract]
Net income per share, basic	$ 0.20	$ (0.18)	$ 0.21	$ 0.01	$ 0.18	$ 0.27	$ 0.15	$ 0.01	$ 0.23	$ 0.62	$ 0.13
Net income per share, diluted	$ 0.20	$ (0.18)	$ 0.21	$ 0.01	$ 0.18	$ 0.27	$ 0.15	$ 0.01	$ 0.23	$ 0.61	$ 0.13
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially diluted amounts excluded from calculations									48	62	79
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially diluted amounts excluded from calculations									6	0	0