Income Taxes (Tables)

6 Months Ended

Apr. 30, 2017

Income Tax Disclosure [Abstract]

Schedule of Estimated Annual Effective Income Tax Rate

Our quarterly provision for income taxes is calculated using an estimated annual effective income tax rate, which is adjusted for discrete items that occur during the reporting period.

	Three Months Ended April 30,				Six Months Ended April 30,
	2017		2016		2017		2016
Effective tax rate on income from continuing operations	35.3	%	34.2	%	32.7	%	13.6	%