STOCK-BASED COMPENSATION - Equity Awards (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Employee Stock Option
STOCK-BASED COMPENSATION
Weighted-average grant-date fair value of options granted (in dollars per share)	$ 17.01			$ 21.01	$ 21.41	$ 18.27
Total intrinsic value of options exercised	$ 8.2			$ 7.1	$ 66.0	$ 164.9
Cash received from option exercises	10.0			$ 5.9	62.1	$ 65.6
Total unrecognized compensation expense related to non-vested shares granted to employees	$ 165.2				$ 165.2
Cost expected to be recognized over a weighted-average period					3 years 3 months 18 days
Restricted Stock Units, and Performance Share Units
STOCK-BASED COMPENSATION
Expected to vest over	1,600				1,600
Total unrecognized compensation expense related to non-vested shares granted to employees	$ 44.9				$ 44.9
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)			1,964		1,964
Granted (in shares)	32	27	502
Vested (in shares)					(826)
Forfeited/cancelled (in shares)					(13)
Non-vested at the end of the period (in shares)	1,686				1,686
Weighted Average Grant-Date Fair Value
Non-vested at the beginning of the period (in dollars per share)			$ 40.95		$ 40.95
Granted (in dollars per share)	$ 48.40	$ 49.12	$ 57.04
Vested (in dollars per share)					40.71
Forfeited/cancelled (in dollars per share)					37.77
Non-vested at the end of the period (in dollars per share)	46.15				46.15
Restricted Stock Units, and/or Performance Share Units
Weighted Average Grant-Date Fair Value
Granted (in dollars per share)	$ 48.40			$ 56.38	$ 58.80	$ 51.22
Performance Share Units
STOCK-BASED COMPENSATION
Percentage of target performance					100.00%
Performance Share Units | Minimum
STOCK-BASED COMPENSATION
Percentage of target performance					0.00%
Performance Share Units | Maximum
STOCK-BASED COMPENSATION
Percentage of target performance					200.00%
Other Share-Based Awards
STOCK-BASED COMPENSATION
Total unrecognized compensation expense related to non-vested shares granted to employees	$ 0.1				$ 0.1
Cost expected to be recognized over a weighted-average period					3 months 18 days