Schedule II (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 17.7	$ 18.2	$ 18.0
Additions charged to profit and loss	28.1	30.5	27.5
Write-offs	(27.5)	(31.2)	(28.1)
Foreign currency impact	(1.9)	0.2	0.1
Other	0.0	0.0	0.7
Balance at end of year	16.4	17.7	18.2
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	48.5	40.3	42.0
Additions charged to profit and loss	(5.8)	6.6	(1.1)
Write-offs	(9.0)	0.0	0.0
Foreign currency impact	(0.6)	1.6	(0.6)
Other	0.0	0.0	0.0
Balance at end of year	$ 33.1	$ 48.5	$ 40.3