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Net Income per Share (Tables)
 9 Months Ended
Jul. 31, 2014
Earnings Per Share [Abstract]  
Reconciliation of Weighted-Average Common Shares Used to Calculate Net Income Per Share
The table below reconciles the weighted-average common shares used to calculate basic net income per share with the weighted-average common shares used to calculate diluted net income per share:
 
Three Months Ended 
 July 31,
 
Nine Months Ended 
 July 31,
 
2014
 
2013
 
2014
 
2013
 
(in thousands)
Numerator:
 
 
 
 
 
 
 
Net income
$
65,656

 
$
52,297

 
$
196,669

 
$
190,910

Denominator:
 
 
 
 
 
 
 
Weighted-average common shares for basic net income per share
155,194

 
153,915

 
154,611

 
152,969

Dilutive effect of potential common shares from equity-based compensation
2,428

 
3,141

 
2,642

 
3,246

Weighted-average common shares for diluted net income per share
157,622

 
157,056

 
157,253

 
156,215

Net income per share:
 
 
 
 
 
 
 
Basic
$
0.42

 
$
0.34

 
$
1.27

 
$
1.25

Diluted
$
0.42

 
$
0.33

 
$
1.25

 
$
1.22

Anti-dilutive employee stock-based awards excluded(1)
2,875

 
1,648

 
2,057

 
2,179


(1)
These stock options and unvested restricted stock units and restricted stock awards were anti-dilutive for the respective periods and are excluded in calculating diluted net income per share. While such awards were antidilutive for the respective periods, they could be dilutive in the future.