Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 23.0	$ 22.5	$ 44.2	$ 41.5
Foreign currency translation gains (losses), net	1.2	(1.5)	(0.2)	1.5
Comprehensive income	$ 24.2	$ 21.0	$ 44.0	$ 43.0