SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	$ 65.2	$ 49.6	$ 22.3
Additions/ (Deductions) Charged to/ (from) Expense	24.9	32.3	41.8
Other Charges/(Reversals)/Changes to Reserves	(2.1)	2.7	2.7
Write-offs/ Payments and Other Changes	(16.1)	(19.4)	(17.2)
Balance End of Period	71.9	65.2	49.6
Valuation Allowance on Deferred Tax Assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Period	16.1	15.4	17.6
Additions/ (Deductions) Charged to/ (from) Expense	20.6	4.5	6.9
Other Charges/(Reversals)/Changes to Reserves	(1.4)	(3.8)	(9.1)
Balance End of Period	$ 35.3	$ 16.1	$ 15.4