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Convertible Preferred Stock and Stockholders' Deficit - Additional Information (Details) - shares
3 Months Ended 9 Months Ended
Mar. 26, 2021
Sep. 30, 2021
Sep. 30, 2021
Class Of Stock [Line Items]      
Convertible preferred stock shares outstanding 0    
Common stock, voting rights     The Class A common stock is entitled to one vote per share and the Class B common stock is entitled to ten votes per share.
Common Class B [Member]      
Class Of Stock [Line Items]      
Number of shares issued upon conversion 115,269,221    
Common stock, shares authorized   160,000,000 160,000,000
Conversion of shares   49,257,842 70,310,049
Convertible Preferred Stock [Member]      
Class Of Stock [Line Items]      
Preferred stock, conversion basis one-for-one basis    
Common Class A [Member]      
Class Of Stock [Line Items]      
Common stock, shares authorized   2,000,000,000 2,000,000,000