CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 92.9	$ (319.9)	$ (295.6)
Foreign currency translation:
Other comprehensive income (loss) before reclassifications, net of tax of $0.0 for 2019, 2018 and 2017	70.5	(378.0)	241.1
Reclassifications, net of tax of $0.0 for 2019	479.8	0.0	0.0
Total foreign currency translation adjustments	550.3	(378.0)	241.1
Pension and post-retirement plans:
Other comprehensive income before reclassifications, net of tax (benefit) expense of $(0.9), $(1.6) and $2.2 for 2019, 2018 and 2017, respectively	0.6	1.8	2.5
Reclassifications, net of tax expense of $2.1 for 2017	(2.1)	0.0	8.4
Total pension and post-retirement plans	(1.5)	1.8	10.9
Unrealized (loss) gain on available for sale securities:
Other comprehensive loss before reclassifications, net of tax benefit of $0.4 for 2017			(2.2)
Reclassifications, net of tax expense of $0.0 for 2017			0.5
Total unrealized loss on available for sale securities			(1.7)
Derivative financial instrument revaluation:
Other comprehensive (loss) income before reclassifications, net of tax (benefit) expense of $0.0, $1.5 and $4.3 2019, 2018 and 2017, respectively	(29.2)	6.0	(4.6)
Reclassifications, net of tax of $1.5 for 2019 and $0.0 for 2018 and 2017, respectively	(3.0)	(0.5)	10.4
Total unrealized (loss) gain arising on qualified hedging derivatives	(32.2)	5.5	5.8
Other comprehensive income (loss)	516.6	(370.7)	256.1
Comprehensive income (loss)	609.5	(690.6)	(39.5)
Comprehensive (income) loss attributable to the non-controlling interests	(40.9)	30.0	(4.2)
Comprehensive income (loss) attributable to stockholders	$ 568.6	$ (660.6)	$ (43.7)