Condensed Consolidated Statements of Comprehensive (Loss) 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 (loss) income	$ (83.2)	$ 99.9	$ (30.8)	$ 144.0
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	7.0	(0.9)	(79.5)	12.4
Unrealized loss on derivatives	(2.6)	(20.3)	(43.3)	(34.9)
Unrealized gain on pension plan obligations	0.2	0.0	0.0	0.5
Other comprehensive income (loss), before tax	4.6	(21.2)	(122.8)	(22.0)
Income tax benefit related to items of other comprehensive loss	(0.6)	(3.1)	(6.4)	(4.8)
Other comprehensive income (loss), net of tax	5.2	(18.1)	(116.4)	(17.2)
Comprehensive (loss) income	(78.0)	81.8	(147.2)	126.8
Less: Comprehensive income (loss) attributable to noncontrolling interests	0.5	3.7	(2.5)	4.9
Comprehensive (loss) income attributable to controlling interests	$ (78.5)	$ 78.1	$ (144.7)	$ 121.9