Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	Jul. 29, 2018	Oct. 29, 2017
Unrecognized Tax Benefits
Unrecognized tax benefits	$ 33.1	$ 35.5
Unrecognized tax benefits affecting effective tax rate if recognized	$ 17.8

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant