v3.20.2
Convertible Senior Notes - Summary of Net Carrying Amount of Liability Component of 2025 Notes (Details) - USD ($)
Sep. 30, 2020
Jun. 02, 2020
Debt Instrument [Line Items]    
Net carrying amount $ 567,683,000  
0.125% Convertible Senior Notes due 2025    
Debt Instrument [Line Items]    
Principal 747,500,000 $ 747,500,000
Unamortized debt discount (167,240,000)  
Unamortized debt issuance costs (12,577,000)  
Net carrying amount $ 567,683,000