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Employee Benefit Plans (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Jul. 31, 2021
Oct. 31, 2021
Defined Benefit Plan, Plan Assets, Allocation    
Curtailment charge $ 0.8  
Accumulated other comprehensive loss (118.2) $ (125.4)
Reclassification, Other    
Defined Benefit Plan, Plan Assets, Allocation    
Accumulated other comprehensive loss $ 4.0