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Stock-Based Compensation
3 Months Ended
Jul. 26, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-based Compensation
Stock-Based Compensation
Under the fair value recognition provisions of U.S. GAAP for accounting for stock-based compensation, the Company measures stock-based compensation expense at the grant date based on the fair value of the award and recognizes the compensation expense over the requisite service period, which is generally the vesting period.
The following table presents the components and classification of stock-based compensation expense recognized for the three months ended July 26, 2013 and July 27, 2012:
 
Three months ended
(in millions)
July 26,
2013
 
July 27,
2012
Stock options
$
8

 
$
11

Restricted stock awards
19

 
21

Employee stock purchase plan
4

 
4

Total stock-based compensation expense
$
31

 
$
36

 
 
 
 
Cost of products sold
$
3

 
$
3

Research and development expense
6

 
7

Selling, general, and administrative expense
22

 
26

Total stock-based compensation expense
$
31

 
$
36

 
 
 
 
Income tax benefits
(8
)
 
(10
)
 
 
 
 
Total stock-based compensation expense, net of tax
$
23

 
$
26