Acquisitions Acquisitions (Schedule of Pro Forma Information) (Details) - Ruckus - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Pro forma revenues	$ 600,530	$ 655,663	$ 1,900,664	$ 1,953,490
Pro forma net income (loss)	$ (21,936)	$ 85,843	$ 100,982	$ 168,212
Pro forma net income (loss) per share—basic	$ (0.05)	$ 0.21	$ 0.25	$ 0.40
Pro forma net income (loss) per share—diluted	$ (0.05)	$ 0.20	$ 0.24	$ 0.38

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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