STOCK-BASED COMPENSATION - Stock Based Compensation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 113.3	$ 93.8	$ 77.4
Income tax benefit	(15.6)	(13.8)	(12.9)
Total stock-based compensation expense	97.7	80.0	64.5
Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	78.4	60.1	48.6
Income tax benefit	(11.0)	(8.7)	(7.9)
Total stock-based compensation expense	67.4	51.4	40.7
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	34.9	33.7	28.8
Income tax benefit	(4.6)	(5.1)	(5.0)
Total stock-based compensation expense	$ 30.3	$ 28.6	$ 23.8