INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Unrecognized tax benefits at beginning of period	$ 99.8	$ 106.6	$ 82.5
Additions based upon prior year tax positions	19.6	1.0	22.9
Additions based on current year tax positions	9.6	5.3	8.1
Reductions for prior period positions	(15.1)	(5.7)	(4.9)
Reductions for settlements and payments	(1.6)	(1.7)	(0.1)
Reductions due to closed statutes	(1.3)	(1.9)	(1.0)
Currency translation adjustment	0.6
Currency translation adjustment		(3.8)	(0.9)
Total unrecognized tax benefits at end of period	$ 111.6	$ 99.8	$ 106.6