REVENUES - Allowance for Expected Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts Receivable and Allowance for Doubtful Accounts
Allowance for doubtful accounts, returns and credits	$ 17.8	$ 16.8
Activity in the allowance for doubtful accounts
Beginning balance	52.8	68.4
Bad debt expense	22.3	5.4
Write-offs	(4.0)	(5.0)
Other	(1.6)	0.7
Ending balance (b)	$ 69.5	$ 69.5