Stock-Based Compensation (Stock-Based Compensation, Unrecognized Compensation Expense And Weighted-Average Period) (Details) $ in Thousands	6 Months Ended
Apr. 30, 2016 USD ($)
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Compensation Expense	$ 1,414
Weighted-Average Period (in years)	10 months 28 days
RSUs, including restricted stock units with market conditions
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Compensation Expense	$ 109,208
Weighted-Average Period (in years)	1 year 9 months 25 days
Employee stock purchase plan (“ESPP”)
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Compensation Expense	$ 6,518
Weighted-Average Period (in years)	1 year 11 days

Unrecognized cost of unvested share-based compensation awards.

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

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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