Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 15.7	$ 52.4
Other comprehensive loss, before tax:
Foreign currency translation adjustments	(37.6)	(86.5)
Unrealized gain (loss) on derivatives	9.2	(40.7)
Unrealized gain (loss) on pension and other benefit plan obligations	1.2	(0.2)
Other comprehensive loss, before tax	(27.2)	(127.4)
Income tax provision (benefit) related to items of other comprehensive loss	1.8	(5.8)
Other comprehensive loss, net of tax	(29.0)	(121.6)
Comprehensive loss	(13.3)	(69.2)
Less: Comprehensive income (loss) attributable to noncontrolling interests	0.3	(3.0)
Comprehensive loss attributable to controlling interests	$ (13.6)	$ (66.2)