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Redeemable Convertible Preferred Stock (Details)
$ in Millions
1 Months Ended
Jun. 30, 2021
USD ($)
shares
Sep. 30, 2021
shares
Mar. 31, 2021
shares
Sep. 30, 2020
shares
Jun. 30, 2020
shares
Mar. 31, 2020
shares
Temporary Equity [Line Items]            
Redeemable convertible preferred stock issued (in shares)   0 76,286,618      
Redeemable convertible preferred stock outstanding (in shares) 0 0 76,286,618 76,287,000 76,287,000 76,287,000
Conversion of stock, conversion ratio 1          
Conversion of redeemable convertible preferred stock upon initial public offering | $ $ 81.5          
Redeemable Convertible Preferred Stock            
Temporary Equity [Line Items]            
Conversion of stock, shares converted (in shares) 76,286,618          
Common Class B            
Temporary Equity [Line Items]            
Conversion of stock, shares issued (in shares) 76,286,618