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Common Stock - Schedule of Common Stock Reserved for Future Issuance (Details) - shares
shares in Thousands
Mar. 31, 2024
Dec. 31, 2023
Class of Stock [Line Items]    
Shares of common stock reserved (in shares) 122,065 104,014
Equity Incentive Plan, 2019    
Class of Stock [Line Items]    
Shares of common stock reserved (in shares) 73,837 56,442
Stock options issued and outstanding    
Class of Stock [Line Items]    
Shares of common stock reserved (in shares) 10,731 12,523
Outstanding and unsettled RSUs    
Class of Stock [Line Items]    
Shares of common stock reserved (in shares) 9,967 10,894
Shares available for issuance under the Employee Stock Purchase Plan (ESPP)    
Class of Stock [Line Items]    
Shares of common stock reserved (in shares) 17,219 13,844
Convertible Debt | 2026 Notes    
Class of Stock [Line Items]    
Shares of common stock reserved (in shares) 10,311 10,311