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SHAREHOLDERS' EQUITY (Tables)
12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Number of Reserved and Authorized Shares Under the Equity Incentive Plans
As of December 31, 2021, the number of Reserved and Authorized Shares under the Equity Incentive Plans is as detailed below:
                     
    
  2021  
      
        
Stock Options outstanding
     8.2          
RSU outstanding
  
 
2.2
 
       
PSU outstanding
  
 
0.1

 
       
Ordinary shares available for issuance under the Equity Incentive Plans
  
 
3.4
 
       
    
 
 
 
       
 
Total Reserved and Authorized Shares as of December 31, 2021
  
 
 
 
13.9
 
 
       
    
 
 
 
       
Summary of Stock Option Activity and Related Information
As of December 31, 2021 the aggregate amount of shares, stock options, RSU and PSU outstanding is 139.6.
A summary of the Company’s stock option activity and related information is as follows:
                         
    
  Options  
   
  Weighted  
average
exercise
price
    
  Aggregate  
intrinsic
value
 
    
2021
 
       
Outstanding at beginning of year
     9.4     $ 106.99      $ 244.3  
Granted
     1.0     $ 121.59           
Exercised
     (1.9   $ 88.20           
Forfeited
     (0.3   $ 112.99           
    
 
 
   
 
 
    
 
 
 
       
Outstanding at December 31, 2021
     8.2     $ 113.07      $ 37.1  
    
 
 
   
 
 
    
 
 
 
       
Exercisable at December 31, 2021
     5.3     $ 111.67      $ 27.6  
    
 
 
   
 
 
    
 
 
 
 
Summary of Restricted Stock Units Activity
A summary of the Company’s RSUs and PSUs activity is as follows:
                         
    
Year ended December 31, 2021
    
    RSUs    
 
    PSUs    
 
    Total    
       
Unvested at beginning of year
     1.7       -         1.7  
Granted
     1.5       0.1       1.6  
Vested
     (0.6   *     (0.6
Forfeited
     (0.4   *     (0.4
    
 
 
 
 
 
 
 
 
 
 
 
       
       2.2       0.1       2.3  
    
 
 
 
 
 
 
 
 
 
 
 
*)    Represents an amount lower than 0.1
Stock-based Compensation Expense Related to Stock Options, RSUs and PSUs
Stock-based compensation expense related to stock options, RSUs and PSUs is included in the consolidated statements of income as follows:
                         
    
Year ended

December 31,
    
2021
  
2020
  
2019
       
Cost of revenues
     $     4.8        $     4.5        $     4.4  
Research and development
     31.8        23.5        18.9  
Selling and marketing
     42.8        36.8        28.8  
General and administrative
     40.9        47.7        54.6  
    
 
 
 
  
 
 
 
  
 
 
 
       
         $     120.3        $     112.5        $       106.7