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STOCK-BASED COMPENSATION (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended
Feb. 29, 2024
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Stock-based Compensation        
Payments for the purchase of shares to satisfy the employee income tax withholdings   $ 25.5 $ 12.7  
Employees        
Stock-based Compensation        
Stock-based compensation expense   11.5 16.9  
Non-employee Director        
Stock-based Compensation        
Stock-based compensation expense   $ 0.3 $ 0.5  
RSUs        
Stock-based Compensation        
Number of shares of common stock of which unit is convertible (in shares)   1    
Vesting period   3 years    
Period of advance notice required   6 months    
Qualified retirement eligibility age for grants awarded in and after 2017   55 years    
Qualified retirement eligibility number of years of service for grants awarded in and after 2017   10 years    
RSUs | Non-employee Director        
Stock-based Compensation        
Vesting period   1 year    
PSUs        
Stock-based Compensation        
Number of shares of common stock of which unit is convertible (in shares)   1    
Vesting period   3 years    
Non vested RSAs   111,104   134,484
Shares purchased to satisfy the employee income tax withholdings (in shares)   46,867    
Payments for the purchase of shares to satisfy the employee income tax withholdings   $ 8.6    
Vested (in shares)   110,376    
Risk-free interest rate 4.41%      
Volatility time period 2 years 10 months 9 days      
Expected volatility 21.56%      
Correlation to S&P 500 Index time period 2 years 10 months 9 days      
Correlation with S&P index 0.39      
Unrecognized compensation expense   $ 85.1    
Unrecognized compensation expense, period for recognition   2 years 3 months 18 days    
PSUs | Minimum        
Stock-based Compensation        
Units ultimately expected to be awarded   0.00%    
PSUs | Maximum        
Stock-based Compensation        
Units ultimately expected to be awarded   200.00%    
Restricted Stock        
Stock-based Compensation        
Shares purchased to satisfy the employee income tax withholdings (in shares)   90,121    
Payments for the purchase of shares to satisfy the employee income tax withholdings   $ 16.9    
Shares vested, prompting share repurchases to cover employees' tax obligations   232,278    
Restricted Stock and Restricted Stock Units        
Stock-based Compensation        
Non vested RSAs   613,192   638,181
Vested (in shares)   232,632