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EMPLOYEE STOCK BENEFIT PLANS
 9 Months Ended
Sep. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Employee Stock Benefit Plans [Text Block]

Note 16. EMPLOYEE STOCK BENEFIT PLANS

 

Stock-based compensation expense was as follows:

 Three Months Ended September 30, Nine Months Ended September 30,
Dollars in Millions2012 2011 2012 2011
Stock options$ (1) $ 7 $ 4 $ 20
Restricted stock  9   19   46   59
Market share units  4   6   17   17
Long-term performance awards  14   7   41   24
Amylin stock options and restricted stock units (See Note 4)  94   -   94   -
Total stock-based compensation expense$ 120 $ 39 $ 202 $ 120
            
Income tax benefit$ 38 $ 13 $ 66 $ 41

The acceleration of unvested stock options and restricted stock units in connection with the acquisition of Amylin resulted in stock-based compensation expense for the three and nine months ended September 30, 2012.

 

In the nine months ended September 30, 2012, 3.0 million restricted stock units, 1.1 million market share units and 1.7 million long-term performance share units were granted. The weighted-average grant date fair value for restricted stock units, market share units and long-term performance share units granted during the nine months ended September 30, 2012 was $32.70, $31.85 and $32.33, respectively.

 

Substantially all restricted stock units vest ratably over a four year period based on share price performance. Market share units vest ratably over a four year period based on share price performance. The fair value of market share units was estimated on the date of grant using a model applying multiple input variables that determine the probability of satisfying market conditions. Long-term performance share units are determined based on the achievement of annual performance goals, but are not vested until the end of the three year plan period.

Total compensation costs related to nonvested awards not yet recognized and the weighted-average period over which such awards are expected to be recognized at September 30, 2012 were as follows:

           Long-Term
  Stock Restricted Market Performance
Dollars in Millions Options Stock Share Units Awards
Unrecognized compensation cost $4 $165 $39 $42
Expected weighted-average period in years of compensation cost to be recognized  0.4  2.8  2.9  1.4