REVENUES FROM CONTRACTS WITH CUSTOMERS - Allowance for Credit Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 43.3	$ 56.2
Bad debt expense, net of recoveries	5.4	0.3
Write-offs	(2.5)	(4.7)
Other charges	2.0	(1.3)
Ending balance	$ 48.2	$ 50.5