Receivables (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 27.4	$ 28.6	$ 53.3
Provisions	5.6	3.1	2.6
Write-offs	(7.8)	(4.7)	(26.3)
Translation and other	(0.2)	0.4	(1.0)
Balance at end of year	$ 25.0	$ 27.4	$ 28.6