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Stockholders' Equity (Tables)
 6 Months Ended
Jan. 31, 2013
Equity [Abstract]  
Total share-based compensation expense
The following table summarizes the total share-based compensation expense that we recorded for the periods shown.
 
Three Months Ended
 
Six Months Ended
(In millions, except per share amounts)
January 31,
2013
 
January 31,
2012
 
January 31,
2013
 
January 31,
2012
Cost of revenue
$
2

 
$
2

 
$
4

 
$
3

Selling and marketing
17

 
15

 
35

 
29

Research and development
14

 
14

 
28

 
26

General and administrative
14

 
12

 
29

 
25

Total share-based compensation expense
47

 
43

 
96

 
83

Income tax benefit
(16
)
 
(14
)
 
(32
)
 
(27
)
Decrease in net income
$
31

 
$
29

 
$
64

 
$
56

Decrease in net income per share:
 
 
 
 

 

Basic
$
0.10

 
$
0.10

 
$
0.22

 
$
0.19

Diluted
$
0.10

 
$
0.09

 
$
0.21

 
$
0.18
Summary of share-based awards available for grant
A summary of share-based awards available for grant under our 2005 Equity Incentive Plan for the six months ended January 31, 2013 was as follows:
(Shares in thousands)
Shares
Available
for Grant
Balance at July 31, 2012
21,760

Options granted
(106
)
Restricted stock units granted (1)
(901
)
Share-based awards canceled/forfeited/expired (1)(2)
1,399

Balance at January 31, 2013
22,152

________________________________
(1)
Under the terms of our Amended and Restated 2005 Equity Incentive Plan, as amended through July 24, 2012 (2005 Equity Incentive Plan), RSUs granted from the pool of shares available for grant on or after November 1, 2010 reduce the pool by 2.3 shares for each share granted. RSUs forfeited and returned to the pool of shares available for grant increase the pool by 2.3 shares for each share forfeited.
(2)
Stock options and restricted stock units canceled, expired or forfeited under our 2005 Equity Incentive Plan, are returned to the pool of shares available for grant. Stock options and restricted stock units canceled, expired or forfeited under older expired plans are not returned to the pool of shares available for grant.
Summary of stock option activity
A summary of stock option activity for the six months ended January 31, 2013 was as follows:
 
Options Outstanding
(Shares in thousands)
Number
of Shares
 
Weighted
Average
Exercise
Price
Per Share
Balance at July 31, 2012
18,061

 
$
37.49

Options granted
106

 
60.30

Options exercised
(3,880
)
 
32.37

Options canceled or expired
(336
)
 
40.67

Balance at January 31, 2013
13,951

 
$
39.02

 
 
 
 
Exercisable at January 31, 2013
8,620

 
$
32.68
Summary of restricted stock unit activity
A summary of restricted stock unit activity for the six months ended January 31, 2013 was as follows:
 
Restricted Stock Units
(Shares in thousands)
Number
of Shares
 
Weighted
Average
Grant Date
Fair Value
Nonvested at July 31, 2012
9,607

 
$
46.79

Granted
392

 
60.30

Vested
(875
)
 
34.80

Forfeited
(511
)
 
47.08

Nonvested at January 31, 2013
8,613

 
$
48.61