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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Millions
Total
Common stock
Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit
Beginning balance at Dec. 31, 2020 $ 881.0 $ 0.8 $ 1,109.5 $ (2.3) $ (227.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock-based compensation plans, net of shares exchanged for withholding tax 80.3   80.3    
Stock-based payment expense 36.5   36.5    
Net loss (27.2)       (27.2)
Other comprehensive (loss) income, net of tax (2.8)     (2.8)  
Ending balance at Dec. 31, 2021 967.8 0.8 1,226.3 (5.1) (254.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock-based compensation plans, net of shares exchanged for withholding tax (4.3)   (4.3)    
Stock-based payment expense 38.1   38.1    
Net loss (112.0)       (112.0)
Other comprehensive (loss) income, net of tax (3.8)     (3.8)  
Ending balance at Dec. 31, 2022 885.8 0.8 1,260.1 (8.9) (366.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under stock-based compensation plans, net of shares exchanged for withholding tax (2.8)   (2.8)    
Issuance of common stock for public offering, net 117.6 0.1 117.5    
Stock-based payment expense 40.7   40.7    
Net loss (263.3)       (263.3)
Other comprehensive (loss) income, net of tax 5.2     5.2  
Ending balance at Dec. 31, 2023 $ 783.2 $ 0.9 $ 1,415.5 $ (3.7) $ (629.5)