SHARE-BASED COMPENSATION - Changes in Outstanding RSUs and Weighted Average Grant Date Fair Values (Details)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Service-based RSUs
Number of Awards
Outstanding at beginning of year (in shares) | shares	783,489
Granted (in shares) | shares	260,077
Distributed (in shares) | shares	(264,735)
Forfeited (in shares) | shares	(13,751)
Outstanding at ending of year (in shares) | shares	765,080
Weighted Average Grant-Date Fair Value Per Share
Outstanding at beginning of year (in usd per share) | $ / shares	$ 88.98
Granted (in usd per share) | $ / shares	161.42
Distributed (in usd per share) | $ / shares	97.57
Forfeited (in usd per share) | $ / shares	115.94
Outstanding at ending of year (in usd per share) | $ / shares	$ 110.14
Performance-based RSUs
Number of Awards
Outstanding at beginning of year (in shares) | shares	550,171
Granted (in shares) | shares	0
Distributed (in shares) | shares	(35,135)
Forfeited (in shares) | shares	(39,915)
Outstanding at ending of year (in shares) | shares	475,121
Weighted Average Grant-Date Fair Value Per Share
Outstanding at beginning of year (in usd per share) | $ / shares	$ 99.56
Granted (in usd per share) | $ / shares	0
Distributed (in usd per share) | $ / shares	138.68
Forfeited (in usd per share) | $ / shares	133.95
Outstanding at ending of year (in usd per share) | $ / shares	$ 93.77
Restricted stock units
Number of Awards
Outstanding at beginning of year (in shares) | shares	1,333,660
Granted (in shares) | shares	260,077
Distributed (in shares) | shares	(299,870)
Forfeited (in shares) | shares	(53,666)
Outstanding at ending of year (in shares) | shares	1,240,201
Weighted Average Grant-Date Fair Value Per Share
Outstanding at beginning of year (in usd per share) | $ / shares	$ 93.34
Granted (in usd per share) | $ / shares	161.42
Distributed (in usd per share) | $ / shares	102.39
Forfeited (in usd per share) | $ / shares	129.33
Outstanding at ending of year (in usd per share) | $ / shares	$ 103.87