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Related Party Transactions - Additional Information (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
Director    
Related Party Transaction [Line Items]    
Payments for scientific consulting services $ 3,000,000 $ 27,000,000
Director One    
Related Party Transaction [Line Items]    
Accounts payable $ 0 $ 0