LEASES - COMPONENTS OF LEASE COST (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Components of Lease Cost
Operating lease cost	$ 34.7	$ 40.8	$ 114.8	$ 120.8
Short-term lease cost	3.8	0.2	5.5	0.4
Variable lease cost	0.1	0.2	0.5	0.6
Total lease cost	$ 38.6	$ 41.2	$ 120.8	$ 121.8