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Employee Benefit Plans (Details 3) (USD $)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Cost of product revenue [Member]
       
Details of total stock-based compensation expense by statement functional line        
Stock-based compensation expense $ 6 $ 5 $ 13 $ 12
Research and development [Member]
       
Details of total stock-based compensation expense by statement functional line        
Stock-based compensation expense 97 84 199 173
Selling, general and administrative [Member]
       
Details of total stock-based compensation expense by statement functional line        
Stock-based compensation expense $ 33 $ 30 $ 69 $ 61