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Basis of Presentation and Significant Accounting Policies - Foreign Currency (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Basis of Presentation and Significant Accounting Policies      
Foreign currency gains (losses) $ 0.9 $ (1.0) $ (0.3)
Fixed rate long term obligation fair value $ 7.1 $ 7.1