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Equity - Equity Incentive Plans (Details) - shares
1 Months Ended 12 Months Ended
Apr. 30, 2010
Mar. 31, 2022
Mar. 31, 2018
Jun. 30, 2021
Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares reserved for future issuance (in shares)   55,232,000     114,663,000
Options granted (in shares)   1,966,000      
Options outstanding (in shares)   26,983,000     36,576,000
2010 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options outstanding (in shares)   24,312,000     33,856,000
2010 Plan | Stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period 4 years        
Expiration period from the date of grant 10 years        
2010 Plan | Individuals With Voting Interest Less Than Threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grant exercise price, percentage of estimated fair value of common stock on date of grant (not less than) 100.00%        
2010 Plan | Individuals With Voting Interest At Threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grant exercise price, percentage of estimated fair value of common stock on date of grant (not less than) 110.00%        
Voting interests threshold 10.00%        
2021 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares reserved for future issuance (in shares)       22,500,000  
Maximum annual increase of shares reserved for future issuance as a percentage of common stock outstanding       5.00%  
2021 ESPP          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares reserved for future issuance (in shares)   4,500,000      
Maximum annual increase of shares reserved for future issuance as a percentage of common stock outstanding   1.00%      
Maximum annual increase of shares reserved for future issuance (in shares)   6,750,000      
Options outstanding outside the Plans          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted (in shares)     4,682,582    
Options exercised (in shares)   2,011,252      
Options outstanding (in shares)   2,671,330     2,720,000