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STOCK-BASED COMPENSATION - Summary of Restricted Stock Unit Activity and Performance Stock Units (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Aggregate Intrinsic Value    
Share price (in usd per share) $ 120.15  
Restricted stock units    
Number of Shares Outstanding    
Outstanding, beginning balance (in shares) 2,253  
Granted (in shares) 619  
Vested (in shares) (869)  
Canceled (in shares) (195)  
Outstanding, ending balance (in shares) 1,808  
Number of shares outstanding, expected to vest (in shares) 1,808  
Weighted Average Fair Value per Share at Grant Date    
Outstanding, beginning balance (in usd per share) $ 181.01  
Granted (in usd per share) 199.18  
Vested (in usd per share) 146.23  
Canceled (in usd per share) 181.59  
Outstanding, ending balance (in usd per share) 203.87  
Weighted-Average Fair Value per Share at Grant Date, Expected to vest (in usd per share) $ 203.87  
Weighted-Average Remaining Contractual Term    
Outstanding 1 year 2 months 12 days  
Expected to vest 1 year 2 months 12 days  
Aggregate Intrinsic Value    
Outstanding $ 217,335
Vested 166,063  
Aggregate intrinsic value, expected to vest $ 217,327  
Performance shares    
Number of Shares Outstanding    
Outstanding, beginning balance (in shares) 376  
Granted (in shares) 420  
Vested (in shares) (380)  
Canceled (in shares) (19)  
Outstanding, ending balance (in shares) 397  
Number of shares outstanding, expected to vest (in shares) 397  
Weighted Average Fair Value per Share at Grant Date    
Outstanding, beginning balance (in usd per share) $ 197.82  
Granted (in usd per share) 234.34  
Vested (in usd per share) 196.24  
Canceled (in usd per share) 227.29  
Outstanding, ending balance (in usd per share) 236.51  
Weighted-Average Fair Value per Share at Grant Date, Expected to vest (in usd per share) $ 236.51  
Weighted-Average Remaining Contractual Term    
Outstanding 1 year 4 months 24 days  
Expected to vest 1 year 4 months 24 days  
Aggregate Intrinsic Value    
Outstanding $ 47,716
Vested 80,113  
Aggregate intrinsic value, expected to vest $ 47,716