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Employee Benefit Plans (Details)
$ in Millions
1 Months Ended 3 Months Ended
Nov. 30, 2020
USD ($)
Oct. 31, 2020
USD ($)
plan
Jul. 31, 2021
USD ($)
Jul. 31, 2020
USD ($)
Defined Benefit Plan Disclosure        
Number of U.S. plans | plan   2    
Annual company retirement contribution in addition to 401 (k) match, percent   3.00%    
Accumulated other comprehensive loss   $ (182.8)   $ (184.0)
Pension Plan | United States        
Defined Benefit Plan Disclosure        
Company contributions   0.9    
Pension Plan | United States | Subsequent Event        
Defined Benefit Plan Disclosure        
Minimum funding requirement     $ 4.0  
Company contributions $ 1.0      
Non-Qualified | United States        
Defined Benefit Plan Disclosure        
Company contributions   1.1    
Non-Qualified | Foreign Plan        
Defined Benefit Plan Disclosure        
Company contributions   0.3    
Non-Qualified | Foreign Plan | Subsequent Event        
Defined Benefit Plan Disclosure        
Estimated future contributions to pension plans     $ 1.6  
Reclassification, Other        
Defined Benefit Plan Disclosure        
Curtailment charge   0.8    
Accumulated other comprehensive loss   $ 4.0