Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 43.2	$ 20.9	$ 7.6	$ 66.2
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(1.1)	(0.2)	0.6	(1.0)
Unrealized losses on hedging activities	(3.0)		(4.2)
Unrealized losses on hedging activities		0.0		0.0
Total other comprehensive loss	(4.1)	(0.2)	(3.6)	(1.0)
Comprehensive income	$ 39.1	$ 20.7	$ 4.0	$ 65.2