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Summary of Significant Accounting Policies - Goodwill and Other Indefinite-Lived Intangibles (Details)
3 Months Ended 12 Months Ended
Oct. 27, 2019
intangible_asset
Oct. 28, 2018
USD ($)
Oct. 27, 2019
USD ($)
Oct. 28, 2018
USD ($)
Oct. 29, 2017
USD ($)
Acquired Indefinite-lived Intangible Assets [Line Items]          
Goodwill, impairment loss     $ 0 $ 0 $ 0
Number of assets, quantitative assessment, required additional review | intangible_asset 2        
Indefinite-lived intangible assets, impairment charge     $ 0   $ 0
CytoSport Trademark          
Acquired Indefinite-lived Intangible Assets [Line Items]          
Indefinite-lived intangible assets, impairment charge   $ 17,300,000   $ 17,300,000