Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Outstanding stock-based awards
      
Antidilutive shares not included in the computation of income (loss) per share      
Weighted average equivalent shares 6.7 11.5 6.4
Convertible notes due 2018
      
Antidilutive shares not included in the computation of income (loss) per share      
Weighted average equivalent shares   0.9 31.8
Interest expense, net of tax, which would have been included as an adjustment to the numerator of the diluted income (loss) per share   1 19