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Comprehensive Income Comprehensive Income (Tables)
12 Months Ended
Jul. 31, 2012
Comprehensive Income [Abstract]  
Schedule of Comprehensive Income (Loss) [Table Text Block]
The following table shows the components of comprehensive income, net of income taxes, for the periods indicated.

 
Twelve Months Ended July 31,
(In millions)
2012
 
2011
 
2010
Net income
$
792

 
$
634

 
$
574

 
 
 
 
 
 
Change in unrealized gains (losses) on available-for-sale debt securities
(1
)
 

 
1

Change in unrealized gains (losses) on available-for-sale equity securities
18

 

 

Change in foreign currency translation adjustments
(7
)
 
4

 
3

   Total other comprehensive income
10

 
4

 
4

 
 
 
 
 
 
Total comprehensive income
$
802

 
$
638

 
$
578

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
The following table shows the components of accumulated other comprehensive income, net of income taxes, in the stockholders' equity section of our balance sheets at the dates indicated.

 
July 31,
(In millions)
2012
 
2011
Unrealized gains on available-for-sale debt securities
$
1

 
$
2

Unrealized gains on available-for-sale equity securities
18

 

Foreign currency translation adjustments
6

 
13

Total accumulated other comprehensive income
$
25

 
$
15