Summary of Significant Accounting Policies - Compensation (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017
Rabbi trust
Investments
Gains (losses) related to securities held	$ 8.3	$ (0.4)	$ 6.2

Amount of realized and unrealized gain (loss) on investment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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