Schedule II - Valuation And Qualifying Accounts (Details) - Allowance for Doubtful Accounts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 118.2	$ 103.5	$ 89.7
Charged to costs & expenses	35.9	32.9	32.5
Impact of Currency	(4.5)	4.5	(0.6)
Charged to other accounts	1.3	3.5	2.3
Write-offs, write-downs & deductions	(29.3)	(26.2)	(20.4)
Balance at end of period	$ 121.6	$ 118.2	$ 103.5