Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 16.4	$ 14.6	$ 24.6	$ 24.3
Other comprehensive (loss) income:
Foreign currency translation	0.0	0.1	(0.2)	0.1
Total comprehensive income	$ 16.4	$ 14.7	$ 24.4	$ 24.4