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Income Taxes (Tables)
3 Months Ended
Jan. 31, 2021
Income Tax Disclosure [Abstract]  
Provision (Benefit) for Incomes Taxes and Effective Tax Rates
The following table presents the provision (benefit) for income taxes and the effective tax rates:
 Three Months Ended 
 January 31,
 20212020
 (in thousands)
Income before income taxes$177,104 $99,573 
Provision (benefit) for income taxes$15,076 $(4,488)
Effective tax rate8.5 %(4.5)%