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Taxes (Tables)
9 Months Ended
Jul. 31, 2019
Income Tax Disclosure [Abstract]  
Provision for Income Taxes and Effective Tax Rates
The following table presents the provision (benefit) for income taxes and the effective tax rates:
 
Three Months Ended 
 July 31,
 
Nine Months Ended 
 July 31,
 
2019
 
2018
 
2019
 
2018
 
(in thousands)
Income before income taxes
$
132,911

 
$
71,893

 
$
413,883

 
$
311,295

Provision (benefit) for income taxes
$
32,982

 
$
(7,516
)
 
$
42,230

 
$
133,105

Effective tax rate
24.8
%
 
(10.5
)%
 
10.2
%
 
42.8
%