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Business Combinations - Additional information (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Nov. 01, 2021
Dec. 03, 2020
Jul. 31, 2022
Jul. 31, 2021
Oct. 29, 2021
Dec. 02, 2020
The Rocket Science Group, LLC (Mailchimp)            
Business Acquisition [Line Items]            
Revenue attributable to Mailchip     $ 762,000      
Acquisition costs     63,000      
Consideration transferred $ 12,000,000          
Payments to acquire businesses $ 5,700,000          
Business acquisition, equity interest issued (in shares) 10,100          
Fair value of equity awards $ 6,300,000          
Share price (in dollars per share)         $ 625.99  
Equity expensed $ 151,000          
Period of expense 4 years          
Estimated useful life 12 years          
Total purchase price allocation $ 11,996,000          
Credit Karma            
Business Acquisition [Line Items]            
Acquisition costs     31,000 $ 28,000    
Consideration transferred   $ 8,100,000        
Payments to acquire businesses   $ 3,400,000        
Share price (in dollars per share)           $ 355.49
Estimated useful life   14 years 4 months 24 days        
Total purchase price allocation   $ 7,195,000        
Service period of equity awards assumed   3 years        
Credit Karma | Common Stock            
Business Acquisition [Line Items]            
Business acquisition, equity interest issued (in shares)   10,600        
Fair value of equity awards   $ 3,800,000        
Restricted Stock Units (RSUs) | The Rocket Science Group, LLC (Mailchimp)            
Business Acquisition [Line Items]            
Business acquisition, equity interest issued (in shares) 325          
Fair value of equity awards $ 211,000          
Stock units issued in substitution of outstanding equity incentive awards 583          
Grant date fair value of equity awards $ 355,000          
Period of equity purchase agreement 3 years          
Equity awards expensed, period two $ 60,000          
Period of expense, period two 6 months          
Restricted Stock Units (RSUs) | Credit Karma            
Business Acquisition [Line Items]            
Fair value of equity awards     $ 300,000      
Restricted Stock Units (RSUs) | Credit Karma | Empolyees of Credit Karma            
Business Acquisition [Line Items]            
Fair value of equity awards   $ 300,000        
Service period of equity awards assumed   4 years        
Equity Award | Credit Karma            
Business Acquisition [Line Items]            
Consideration transferred liabilities incurred, included in purchase price   $ 47,000        
Consideration transferred liabilities incurred, not included in purchase price   663,000        
Revest Provision | Credit Karma            
Business Acquisition [Line Items]            
Fair value of equity awards   $ 275,000