SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	$ 67.9	$ 71.9	$ 65.2
Additions/ (Deductions) Charged to/ (from) Income Tax Expense/ Expenses	21.7	25.7	24.9
Other Charges/(Reversals)/Changes to Reserves	(9.2)	(5.8)	(2.1)
Write-offs/ Payments	(24.2)	(23.9)	(16.1)
Balance End of Period	56.2	67.9	71.9
Valuation Allowance on Deferred Tax Assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	39.4	35.3	16.1
Additions/ (Deductions) Charged to/ (from) Income Tax Expense/ Expenses	17.8	13.3	20.6
Other Charges/(Reversals)/Changes to Reserves	(5.2)	(9.2)	(1.4)
Balance End of Period	$ 52.0	$ 39.4	$ 35.3