Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1.4	$ 11.8	$ 25.3	$ 49.8
Foreign currency translation:
Other comprehensive (loss) income before reclassifications, net of tax (benefit) of $(0.7) and $0.0 for the three months ended June 30, 2019 and 2018, and $0.0 for the six months ended June 30, 2019 and 2018, respectively	(0.1)	(377.8)	94.1	(318.6)
Reclassifications, net of tax of $0.0 for the three and six months ended June 30, 2019 and 2018, respectively	0.0	0.0	479.8	0.0
Total foreign currency translation adjustments	(0.1)	(377.8)	573.9	(318.6)
Pension and post-retirement plans:
Reclassifications, net of tax of $0.0 for the three and six months ended June 30, 2019 and 2018, respectively	0.0	0.0	(2.1)	0.0
Total pension and post-retirement plans	0.0	0.0	(2.1)	0.0
Derivative financial instruments:
Other comprehensive (loss) income before reclassifications, net of tax expense (benefit) of $2.4 and $0.9 for the three months ended June 30, 2019 and 2018, and $0.0 and $3.1 for the six months ended June 30, 2019 and 2018, respectively	(18.5)	10.4	(27.7)	7.8
Reclassifications, net of tax of $0.00 and $0.0 for the three months ended June 30, 2019 and 2018, and $1.4 and $0.0 for the six months ended June 30, 2019 and 2018, respectively	0.3	(7.8)	(5.4)	0.9
Total unrealized (loss) gain arising on qualified hedging derivatives	(18.2)	2.6	(33.1)	8.7
Other comprehensive (loss) income	(18.3)	(375.2)	538.7	(309.9)
Comprehensive (loss) income	(16.9)	(363.4)	564.0	(260.1)
Comprehensive loss (income) attributable to the non-controlling interests	0.0	35.1	(40.2)	32.8
Comprehensive (loss) income attributable to common stockholders	$ (16.9)	$ (328.3)	$ 523.8	$ (227.3)