Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (Loss)/Income	$ (116.6)	$ 35.2
Other Comprehensive income:
Foreign currency translation adjustment	(58.4)	(12.5)
Change in pension liability adjustment	(0.1)	(0.3)
Change in fair value of derivative financial instruments, net of tax	19.6	11.5
Total other comprehensive loss:	(38.9)	(1.3)
Comprehensive (loss)/income	$ (155.5)	$ 33.9