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Summary of Significant Accounting Policies and Cash Flow Information (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 01, 2020
Nov. 03, 2019
Oct. 28, 2018
Summary of Significant Accounting Policies      
Pretax net gain (loss) for foreign exchange $ (18.8) $ 3.9 $ (11.4)