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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Millions, $ in Millions
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Cumulative Effect, Period of Adoption, Adjustment
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit)
Cumulative Effect, Period of Adoption, Adjustment
Non-Controlling Interests
Balance, beginning of period (in shares) at Dec. 31, 2018     169.8            
Balance, beginning of period at Dec. 31, 2018 $ 1,025.5 $ 0.0 $ 0.2 $ 1,068.3 $ (0.8) $ (0.1) $ (42.2) $ 0.1  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)     3.8            
Issuance of common stock in connection with equity incentive plans - net of tax withholding (48.9)   $ 0.0 (48.9)          
Repurchase and retirement of common stock (in shares)     (1.9)            
Repurchase and retirement of common stock (140.9)   $ 0.0 (12.1)     (128.8)    
Stock-based compensation expense 173.0     173.0          
Net unrealized loss on investments - net of tax 2.0       2.0        
Net income including non-controlling interests 331.7           331.7    
Balance, end of period (in shares) at Dec. 31, 2019     171.7            
Balance, end of period at Dec. 31, 2019 1,342.4   $ 0.2 1,180.3 1.1   160.8    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)     2.5            
Issuance of common stock in connection with equity incentive plans - net of tax withholding (86.1)   $ 0.0 (86.1)          
Repurchase and retirement of common stock (in shares)     (11.7)            
Repurchase and retirement of common stock (1,080.1)   $ 0.0 (78.7)     (1,001.4)    
Stock-based compensation expense 191.7     191.7          
Net unrealized loss on investments - net of tax (0.4)       (0.4)        
Net income including non-controlling interests 488.5           488.5    
Balance, end of period (in shares) at Dec. 31, 2020     162.5            
Balance, end of period at Dec. 31, 2020 856.0   $ 0.2 1,207.2 0.7   (352.1)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)     2.1            
Issuance of common stock in connection with equity incentive plans - net of tax withholding (141.7)   $ 0.0 (141.7)          
Repurchase and retirement of common stock (in shares)     (2.6)            
Repurchase and retirement of common stock (741.8)   $ 0.0 (19.2)     (722.6)    
Stock-based compensation expense 207.9     207.9          
Noncontrolling Interest, Period Increase (Decrease) 17.8               $ 17.8
Net unrealized loss on investments - net of tax (2.7)       (2.7)        
Foreign currency translation adjustment (3.8)       (2.8)       (1.0)
Net income including non-controlling interests 606.7           606.8   (0.1)
Balance, end of period (in shares) at Dec. 31, 2021     162.0            
Balance, end of period at Dec. 31, 2021 $ 798.4   $ 0.2 $ 1,254.2 $ (4.8)   $ (467.9)   $ 16.7