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Employee Benefit Plans (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 30, 2022
Jan. 31, 2022
Apr. 30, 2021
Oct. 31, 2020
Apr. 30, 2022
Apr. 30, 2021
Jul. 31, 2021
Defined Benefit Plan, Plan Assets, Allocation              
Curtailment charge $ 1.1 $ 1.2 $ 1.1 $ 0.8      
Accumulated other comprehensive loss (182.3)       $ (182.3)   $ (118.2)
Other comprehensive (loss) income (42.2)   19.4   $ (64.1) $ 60.4  
Scenario, Adjustment              
Defined Benefit Plan, Plan Assets, Allocation              
Other comprehensive (loss) income $ 7.6 $ 1.7          
Reclassification, Other              
Defined Benefit Plan, Plan Assets, Allocation              
Accumulated other comprehensive loss     $ 25.4     $ 25.4