Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plans and Stock-Based Compensation - Additional Information (Details)

v3.21.2
Equity Incentive Plans and Stock-Based Compensation - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Dec. 20, 2021
Apr. 23, 2021
Apr. 21, 2021
Apr. 22, 2021
Sep. 30, 2020
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Apr. 30, 2021
Jan. 31, 2021
Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Weighted-average grant date fair value of stock options granted (in dollars per share)               $ 64.48 $ 10.42      
Intrinsic value of stock options exercised               $ 460,400,000 $ 92,200,000      
Stock-based compensation expense           $ 95,103,000 $ 48,764,000 438,551,000 65,794,000      
Restricted stock awards issued, value             121,000          
Capitalized stock-based compensation expenses relating to software development cost           2,200,000 $ 0 4,500,000 0      
Stock Options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Unrecognized compensation expense           $ 110,500,000   $ 110,500,000        
Weighted-average remaining period               2 years 9 months 18 days        
Incremental expense               $ 2,900,000 3,200,000      
Early Exercised Options                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Outstanding underlying unvested stock options that had been early exercised (in shares)           1,000,000   1,000,000        
Accrued proceeds from unvested early exercised stock options           $ 3,100,000   $ 3,100,000     $ 5,900,000  
Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Unrecognized compensation expense           447,700,000   $ 447,700,000        
Weighted-average remaining period               2 years 9 months 18 days        
Incremental expense               $ 10,900,000        
Fair value of RSUs vested               $ 1,309,200,000 $ 0      
Stock-based compensation expense   $ 233,000,000                    
Accelerated vesting shares (in shares)               200,000        
Expense acceleration               $ 2,200,000        
Grant date fair value per share (in dollars per share)               $ 61.97        
Restricted Stock Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Unrecognized compensation expense           2,900,000   $ 2,900,000        
Weighted-average remaining period               2 years 10 months 24 days        
Restricted stock awards issued (in shares)         100,000              
Grant date fair value per share (in dollars per share)         $ 33.22              
Restricted stock awards issued, value         $ 4,000,000              
Award vesting period         4 years              
2015 Stock Plan                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares available for future issuances (in shares)                       0
2018 Stock Plan                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares available for future issuances (in shares)                   0    
2021 Stock Plan                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Period of shares automatically increase       10 years                
Percentage of total number of shares       5.00%                
2021 Stock Plan | Class A Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares available for future issuances (in shares)       118,800,000                
2021 Employee Stock Purchase Plan                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares available for future issuances (in shares)       15,500,000                
Period of shares automatically increase       10 years                
Percentage of total number of shares       1.00%                
Number of shares authorized (in shares)       10,500,000                
Unrecognized compensation expense           $ 1,900,000   $ 1,900,000        
Weighted-average remaining period               1 month 6 days        
2021 Employee Stock Purchase Plan | Class A Common Stock                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Purchase price of common stock, percent of market price     85.00%                  
2021 Employee Stock Purchase Plan | Class A Common Stock | Forecast                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Purchase price of common stock, percent of market price 85.00%