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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Millions
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-In Capital
Additional Paid-In Capital
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss)
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit)
Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Dec. 31, 2021     94,900,000          
Beginning balance at Dec. 31, 2021 $ 1,374.0 $ (32.3) $ 0.1 $ 2,011.4 $ (106.8) $ (1.7) $ (635.8) $ 74.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 154.5           154.5  
Other comprehensive (loss) income, net of tax (6.2)         (6.2)    
Stock-based compensation expense 173.1     173.1        
Issuances of common stock under stock plans (in shares)     1,600,000          
Issuances of common stock under stock plans 44.7     44.7        
Ending balance (in shares) at Dec. 31, 2022     96,500,000          
Ending balance at Dec. 31, 2022 1,707.8   $ 0.1 2,122.4   (7.9) (406.8)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 249.7           249.7  
Other comprehensive (loss) income, net of tax 14.9         14.9    
Stock-based compensation expense 194.3     194.3        
Issuances of common stock under stock plans (in shares)     2,200,000          
Issuances of common stock under stock plans 65.3     65.3        
Ending balance (in shares) at Dec. 31, 2023     98,700,000          
Ending balance at Dec. 31, 2023 2,232.0   $ 0.1 2,382.0   7.0 (157.1)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 341.3           341.3  
Other comprehensive (loss) income, net of tax (1.2)         (1.2)    
Stock-based compensation expense 195.5     195.5        
Issuances of common stock under stock plans (in shares)     2,700,000          
Issuances of common stock under stock plans 122.1     122.1        
Repurchases of common stock under accelerated buyback agreements (in shares)     (2,000,000.0)          
Repurchases of common stock under accelerated buyback agreements (300.0)     (145.0)     (155.0)  
Ending balance (in shares) at Dec. 31, 2024     99,400,000          
Ending balance at Dec. 31, 2024 $ 2,589.7   $ 0.1 $ 2,554.6   $ 5.8 $ 29.2