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 Income And Comprehensive Income [Abstract]
Net Income	$ 25.7	$ 12.3	$ 89.9	$ 40.3
Other Comprehensive income:
Foreign currency translation adjustment	(58.7)	(2.6)	(66.3)	(11.2)
Reclassification adjustment from loss on partial settlement of pension plan				3.8
Change in pension liability adjustment			(0.3)	0.6
Change in fair value of derivative financial instruments	25.5	(0.2)	23.0	0.9
Total other comprehensive (loss) income:	(33.2)	(2.8)	(43.6)	(5.9)
Comprehensive (loss) income	$ (7.5)	$ 9.5	$ 46.3	$ 34.4