STOCK-BASED COMPENSATION - Equity Awards (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Employee Stock Option
STOCK-BASED COMPENSATION
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 21.14		$ 14.96	$ 18.25	$ 11.62
Total intrinsic value of options exercised	$ 26.9		$ 18.0	$ 157.9	$ 22.9
Cash received from option exercises	23.3		$ 18.1	59.7	$ 22.6
Total unrecognized compensation expense related to non-vested shares granted to employees	115.6			$ 115.6
Cost expected to be recognized over a weighted-average period				3 years 4 months 24 days
Restricted Stock Units, and Performance Share Units
STOCK-BASED COMPENSATION
Total unrecognized compensation expense related to non-vested shares granted to employees	$ 47.1			$ 47.1
Cost expected to be recognized over a weighted-average period				1 year 8 months 12 days
Number of Shares
Non-vested at the beginning of the period (in shares)		2,026		2,026
Granted (in shares)	22	523
Vested (in shares)				(592)
Forfeited/cancelled (in shares)				(11)
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)	$ 59.70	$ 48.49
Vested (in dollars per share)				32.80
Forfeited/cancelled (in dollars per share)				32.83
Non-vested at the end of the period (in dollars per share)	40.85			40.85
Restricted Stock Units, and/or Performance Share Units
STOCK-BASED COMPENSATION
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 59.17		$ 43.76	$ 48.93	$ 36.98
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	$ 1.5			$ 1.5
Cost expected to be recognized over a weighted-average period				1 year 8 months 12 days