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Accounting for Stock-Based Compensation (Tables)
 9 Months Ended
Apr. 30, 2016
Share-based Compensation [Abstract]  
Summary Of Stock Option Activity
The following table summarizes stock option activity during the nine months ended April 30, 2016:
 
Options
Outstanding
 
Weighted
Average
Exercise Price
Outstanding at July 31, 2015
7,191,442

 
$
29.38

Granted
966,950

 
$
28.16

Exercised
(643,199
)
 
$
18.96

Canceled
(389,961
)
 
$
36.97

Outstanding at April 30, 2016
7,125,232

 
$
29.75
Summary Of Information Concerning Outstanding And Exercisable Options
The following table summarizes information concerning outstanding and exercisable options as of April 30, 2016:
Range of Exercise Prices
 
Number Outstanding
 
Weighted
Average
Remaining
Contractual
Life (Years)
 
Weighted
Average
Exercise
Price of Outstanding Options
 
Number
Exercisable
 
Weighted
Average
Exercise
Price of Exercisable Options
$ 0.00 to $17.69
 
877,972

 
1.83
 
$
17.20

 
877,972

 
$
17.20

$17.70 to $23.69
 
1,359,206

 
2.79
 
$
21.47

 
1,359,206

 
$
21.47

$23.70 to $29.69
 
1,668,035

 
7.36
 
$
28.55

 
752,435

 
$
29.13

$29.70 to $35.69
 
1,569,644

 
6.02
 
$
34.22

 
1,542,877

 
$
34.26

$35.70 and above
 
1,650,375

 
8.08
 
$
40.20

 
815,804

 
$
40.80

 
 
7,125,232

 
5.68
 
$
29.75

 
5,348,294

 
$
28.48