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Common Stock and Common Stock Warrants - Reserved Shares of Common Stock for Issuance (Details) - shares
Mar. 31, 2021
Dec. 31, 2020
Class of Stock [Line Items]    
Warrants to purchase common stock 0 75,000,000
Total 32,920,505,000 22,212,404,000
2020 Equity Incentive Plan | Common stock    
Class of Stock [Line Items]    
Shares reserved of common stock for issuance 10,389,402,000 2,537,181,000
Options to purchase common stock    
Class of Stock [Line Items]    
Shares reserved of common stock for issuance 19,590,771,000 19,600,223,000
Unvested RSUs    
Class of Stock [Line Items]    
Shares reserved of common stock for issuance 827,192,000 0
ESPP    
Class of Stock [Line Items]    
Shares reserved of common stock for issuance 2,113,140,000 0