CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (405.9)	$ (66.3)	$ (356.1)	$ (149.9)
Foreign currency translation:
Other comprehensive (loss) income, net of tax of $0.0 for the three and nine months ended September 30, 2018 and 2017, respectively	(93.3)	126.2	(411.9)	269.6
Pension and post-retirement plans:
Other comprehensive income (loss), net of tax of $2.1 and $0.0 for the three and nine months ended September 30, 2018 and 2017, respectively	0.2	0.0	0.2	(0.3)
Available for sale securities:
Other comprehensive income (loss), net of tax of $0.0 for the three and nine months ended September 30, 2017		0.9		(0.8)
Derivative financial instruments:
Other comprehensive income (loss) before reclassifications, net of tax of $(0.4) and $0.0 for the three months ended September 30, 2018 and 2017, and $(3.4) and $0.0 for the nine months ended September 30, 2018 and 2017, respectively	1.5	(0.2)	9.3	(6.4)
Reclassifications, net of tax of $0.0 for the three and nine months ended September 30, 2018 and 2017, respectively	(0.4)	2.3	0.5	8.2
Total unrealized gain arising on qualified hedging derivatives	1.1	2.1	9.8	1.8
Other comprehensive (loss) income	(92.0)	129.2	(401.9)	270.3
Comprehensive (loss) income	(497.9)	62.9	(758.0)	120.4
Comprehensive loss (income) attributable to the non-controlling interests	6.3	(8.3)	39.1	(10.6)
Comprehensive (loss) income attributable to common stockholders	$ (491.6)	$ 54.6	$ (718.9)	$ 109.8