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Stockholders' Equity - Exercised Stock Options (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Jul. 31, 2022
Oct. 31, 2019
Jul. 31, 2022
Jul. 31, 2021
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]        
Options Exercised (in shares)     905,000  
Exercises (in dollars per share)     $ 31.06  
President | Common Stock        
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]        
Options Exercised (in shares)   4,000,000    
Exercises (in dollars per share)   $ 17.81    
Shares Net Settled for Exercise (in shares)   865,719    
Shares Withheld for Taxes (in shares)   1,231,595    
Net Shares to Employees (in shares)   1,902,686    
Weighted Average Share Price for Withholding (in dollars per share)   $ 82.29    
Employee Stock-Based Tax Withholding (in 000s)   $ 101,348    
Chief Executive Officer | Common Stock        
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]        
Options Exercised (in shares)       90,000
Exercises (in dollars per share)       $ 17.73
Shares Net Settled for Exercise (in shares)       12,366
Shares Withheld for Taxes (in shares)       29,349
Net Shares to Employees (in shares)       48,285
Weighted Average Share Price for Withholding (in dollars per share)       $ 129.01
Employee Stock-Based Tax Withholding (in 000s)       $ 3,786
Management | Common Stock        
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]        
Options Exercised (in shares) 0      
Exercises (in dollars per share) $ 0      
Shares Net Settled for Exercise (in shares) 0      
Shares Withheld for Taxes (in shares) 0      
Net Shares to Employees (in shares) 0      
Weighted Average Share Price for Withholding (in dollars per share) $ 0      
Employee Stock-Based Tax Withholding (in 000s) $ 0