Share-Based Compensation Expense - Components of Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Share-based compensation expense
Share-based compensation expense capitalized in inventory, net	$ 77	$ (7)	$ (26)
Total share-based compensation	48,360	51,993	55,340
Share-based compensation expense included in cost of goods sold
Share-based compensation expense
Share-based compensation expense included in operating expense	5,159	4,936	4,556
Product costs
Share-based compensation expense
Share-based compensation expense included in operating expense	2,672	2,457	2,400
Service costs
Share-based compensation expense
Share-based compensation expense included in operating expense	2,487	2,479	2,156
Share-based compensation expense included in operating expense
Share-based compensation expense
Share-based compensation expense included in operating expense	43,124	47,064	50,810
Research and development
Share-based compensation expense
Share-based compensation expense included in operating expense	12,957	13,870	10,665
Sales and marketing
Share-based compensation expense
Share-based compensation expense included in operating expense	12,846	15,138	15,539
General and administrative
Share-based compensation expense
Share-based compensation expense included in operating expense	17,321	17,342	17,018
Acquisition and integration costs
Share-based compensation expense
Share-based compensation expense included in operating expense	$ 0	$ 714	$ 7,588

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: 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.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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