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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Operating Loss Carryforwards [Line Items]    
Federal statutory income tax rate 21.00%  
Valuation allowance for deferred tax assets $ 1,205,780 $ 1,078,355
Valuation allowance increase 127,400 $ 75,800
Research credit carryforwards 177,100  
Unrecognized tax benefits that would impact effective tax rate 17,100  
Cash and cash equivalents in foreign subsidiaries 299,900  
Accrued interest and penalties 9,500  
United States of America, Dollars    
Operating Loss Carryforwards [Line Items]    
Valuation allowance for deferred tax assets 1,200,000  
Cash and cash equivalents in foreign subsidiaries 137,500  
Federal    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 2,400,000  
State    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards 1,600,000  
State | Research Credit Carryforwards    
Operating Loss Carryforwards [Line Items]    
Research credit carryforwards 131,300  
Foreign Tax Authority | Foreign Tax Credit Carryforward Member    
Operating Loss Carryforwards [Line Items]    
Foreign Tax Credit Carryforward Amount $ 48,200