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Stock Based Compensation (Tables)
 3 Months Ended
Oct. 31, 2018
Share-based Compensation [Abstract]  
Summary Of Stock Option Activity
The following table summarizes stock option activity during the three months ended October 31, 2018:
 
Options
Outstanding
 
Weighted
Average
Exercise Price
Outstanding as of July 31, 2018
6,785,812

 
$
34.93

Granted
841,725

 
$
59.18

Exercised
(743,708
)
 
$
24.24

Canceled
(14,732
)
 
$
44.19

Outstanding as of October 31, 2018
6,869,097

 
$
39.03
Summary Of Information Concerning Outstanding And Exercisable Options
The following table summarizes information concerning outstanding and exercisable options as of October 31, 2018:
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 $27.69
 
390,413

 
1.10
 
$
20.78

 
390,413

 
$
20.78

$27.70 to $32.69
 
1,394,058

 
5.18
 
$
28.56

 
1,095,417

 
$
28.67

$32.70 to $37.69
 
1,247,671

 
3.79
 
$
34.44

 
1,246,838

 
$
34.44

$37.70 to $42.69
 
1,305,734

 
5.94
 
$
40.35

 
1,218,534

 
$
40.21

$42.70 and above
 
2,531,221

 
8.76
 
$
49.20

 
631,993

 
$
44.40

 
 
6,869,097

 
6.16
 
$
39.03

 
4,583,195

 
$
34.80