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Summary of Significant Accounting Policies - Compensation (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 27, 2019
Rabbi trust
Investments
Gains (losses) related to securities held	$ 21.2	$ 7.0	$ 8.3

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

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