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STOCK-BASED COMPENSATION - Stock Options (Details)
 12 Months Ended
Dec. 31, 2021
$ / shares
shares
Options  
Outstanding, beginning balance (in shares) | shares 4,379,663
Exercised (in shares) | shares (1,533,084)
Outstanding, ending balance (in shares) | shares 2,846,579
Exercisable at current period-end (in shares) | shares 2,846,579
Weighted- average exercise price  
Weighted-average exercise price of options outstanding, beginning balance (in dollars per share) | $ / shares $ 71.67
Weighted-average exercise price of options exercised (in dollars per share) | $ / shares 69.44
Weighted-average exercise price of options outstanding, ending balance (in dollars per share) | $ / shares 72.87
Weighted-average exercise price of options exercisable at current period-end (in dollars per share) | $ / shares $ 72.87
Weighted-average remaining contractual term in years, outstanding 2 years 6 months
Weighted-average remaining contractual term in years, exercisable 2 years 6 months