Other income, net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Income and Expenses [Abstract]
Net foreign exchange transaction gain	$ 1.0	$ 6.0
Bank fee expense	(1.3)	(1.1)
Pension income other than service costs	1.2	0.8
Foreign currency exchange loss due to highly inflationary economies	(1.4)	(0.9)
Other, net	1.5	0.0
Other income, net	$ 1.0	$ 4.8