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Condensed 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)
Issuance of common stock under stock-based compensation plans, net of shares exchanged for withholding tax 26.0   26.0    
Stock-based payment expense 9.0   9.0    
Net income (loss) (39.5)       (39.5)
Other comprehensive income (loss), net of tax (1.3)     (1.3)  
Ending balance at Mar. 31, 2021 875.2 0.8 1,144.5 (3.6) (266.5)
Beginning balance at Dec. 31, 2021 967.8 0.8 1,226.3 (5.1) (254.2)
Issuance of common stock under stock-based compensation plans, net of shares exchanged for withholding tax (4.8)   (4.8)    
Stock-based payment expense 10.1   10.1    
Net income (loss) (20.5)       (20.5)
Other comprehensive income (loss), net of tax (2.5)     (2.5)  
Ending balance at Mar. 31, 2022 $ 950.1 $ 0.8 $ 1,231.6 $ (7.6) $ (274.7)