Stock-Based Benefit Plans (Details 1) - Employee Stock Option [Member] - USD ($)	12 Months Ended
Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Weighted-average assumptions and the fair value used for stock option grants
Weighted-average volatility	34.69%	36.36%	42.71%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments	$ 0	$ 0	$ 0
Weighted-average grant date fair value per share of options granted	$ 11.24	$ 11.67	$ 14.26
Minimum [Member]
Weighted-average assumptions and the fair value used for stock option grants
Expected volatility	32.03%	32.69%	36.44%
Risk-free interest rate	1.58%	1.53%	1.45%
Expected life (years)	4 years 205 days	4 years 197 days	4 years 201 days
Maximum [Member]
Weighted-average assumptions and the fair value used for stock option grants
Expected volatility	42.31%	42.58%	44.71%
Risk-free interest rate	2.14%	2.11%	2.71%
Expected life (years)	9 years 62 days	9 years 44 days	9 years 8 days

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- Definition

The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Weighted average expected volatility rate of share-based compensation awards.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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