Warranty (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Product Warranties Disclosures [Abstract]
Machine warranty, range maximum (in years)	4 years
Period of time following a sale the majority of claims are paid, range maximum (in years)	9 months
Changes in warranty reserves
Beginning balance	$ 13.1	$ 12.7
Additions charged to expense	5.4	7.2
Foreign currency fluctuations	0.1	(0.1)
Claims paid	(5.9)	(6.5)
Ending balance	$ 12.7	$ 13.3