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STOCK-BASED COMPENSATION - Equity Awards (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Employee Stock Option            
STOCK-BASED COMPENSATION            
Weighted-average grant-date fair value of options granted (in dollars per share) $ 21.01     $ 15.97 $ 18.27 $ 11.68
Total intrinsic value of options exercised $ 7.1     $ 15.3 $ 164.9 $ 38.2
Cash received from option exercises $ 5.9     $ 12.1 $ 65.6 $ 34.8
Stock units expected to vest (in shares) 28,330       28,330  
Total unrecognized compensation expense related to non-vested shares granted to employees $ 106.2       $ 106.2  
Cost expected to be recognized over a weighted-average period         3 years 2 months 12 days  
Restricted Stock Units, and Performance Share Units            
STOCK-BASED COMPENSATION            
Stock units expected to vest (in shares) 1,900       1,900  
Total unrecognized compensation expense related to non-vested shares granted to employees $ 39.5       $ 39.5  
Cost expected to be recognized over a weighted-average period         1 year 4 months 24 days  
Number of Shares            
Non-vested at the beginning of the period (in shares)     2,026   2,026  
Granted (in shares) 2 22 523      
Vested (in shares)         (593)  
Forfeited/cancelled (in shares)         (12)  
Non-vested at the end of the period (in shares) 1,968       1,968  
Weighted Average Grant-Date Fair Value            
Non-vested at the beginning of the period (in dollars per share)     $ 36.27   $ 36.27  
Granted (in dollars per share) $ 56.38 $ 59.70 $ 48.49      
Vested (in dollars per share)         32.82  
Forfeited/cancelled (in dollars per share)         32.71  
Non-vested at the end of the period (in dollars per share) 40.86       40.86  
Restricted Stock Units, and/or Performance Share Units            
STOCK-BASED COMPENSATION            
Weighted-average grant-date fair value of options granted (in dollars per share) $ 56.38     $ 47.59 $ 51.22 $ 37.12
Performance Share Units            
STOCK-BASED COMPENSATION            
Percentage of target performance         100.00%  
Performance Share Units | Maximum            
STOCK-BASED COMPENSATION            
Percentage of target performance         200.00%  
Performance Share Units | Minimum            
STOCK-BASED COMPENSATION            
Percentage of target performance         0.00%  
Other Share-Based Awards            
STOCK-BASED COMPENSATION            
Total unrecognized compensation expense related to non-vested shares granted to employees $ 1.2       $ 1.2  
Cost expected to be recognized over a weighted-average period         1 year 7 months 6 days