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Stock Repurchase Program (Tables)
 12 Months Ended
Oct. 31, 2018
Stock Repurchase Program [Abstract]  
Stock Repurchase And Reissuance Activities
The following table summarizes stock repurchase activities as well as the reissuance of treasury stock for employee stock-based compensation purposes:
 
Year Ended October 31,
 
2018
 
2017
 
2016
 
(in thousands, except per share price)
Shares repurchased(1)
4,688

 
5,413

 
8,506

Average purchase price per share(1)
$
89.59

 
$
70.21

 
$
49.37

Aggregate purchase price(1)
$
420,000

 
$
380,000

 
$
420,000

Reissuance of treasury stock
3,508

 
4,404

 
4,803


(1)    The first quarter of fiscal 2018 includes the settlement of the $20.0 million equity forward contract related to the September 2017 ASR.