Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Expense and unrecognized (Details)

v3.21.1
Stock-based Compensation - Expense and unrecognized (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 45.1 $ 0.4
Total unrecognized compensation cost related to options 73.4  
Research and development expense.    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 7.1 0.2
Selling, General and Administrative Expenses [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 38.0 $ 0.2