CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (66.3)	$ 65.9	$ (149.9)	$ (76.6)
Other comprehensive income (loss)
Foreign currency translation adjustments	126.2	(0.7)	269.6	451.8
Other comprehensive loss, net of tax of $0.0 for the three and nine months ended September 30, 2017 and 2016	0.0	0.0	0.3	0.0
Other comprehensive loss, net of tax of $0.0 and $0.1 for the three months ended September 30, 2017 and 2016, and $0.0 and $0.8 for the nine months ended September 30, 2017 and 2016, respectively	0.9	(0.1)	(0.8)	(1.7)
Derivative financial instruments revaluation:
Other comprehensive loss before reclassifications, net of tax of $0.0 for the three and nine months ended September 30, 2017 and 2016	(0.2)	(1.6)	(6.4)	(24.3)
Reclassifications, net of tax of $0.0 for the three and nine months ended September 30, 2017 and 2016	2.3	3.0	8.2	8.9
Total unrealized loss arising on qualified hedging derivatives	2.1	1.4	1.8	(15.4)
Other comprehensive income	129.2	0.6	270.3	434.7
Comprehensive income	62.9	66.5	120.4	358.1
Comprehensive loss (income) attributable to the non-controlling interests	(8.3)	14.9	(10.6)	(8.0)
Comprehensive income attributable to stockholders	$ 54.6	$ 81.4	$ 109.8	$ 350.1