text: Summary Stock-Based Compensation Information 
  
  The following table summarizes our stock-based compensation expense by line item in the consolidated statements of 
  operations (in millions): 
  
  Three Months Ended September 30,  Nine Months Ended September 30, 
  
  Cost of revenues 
  
  Research and development 
  
  Selling, general and administrative 
  
  Restructuring and other 
  
  Total 