CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 488.5	$ 480.6	$ 1,482.6	$ 1,390.0
Cost of sales	278.9	272.4	847.2	788.4
Gross profit	209.6	208.2	635.4	601.6
Operating expenses:
Selling, technical, general and administrative	139.5	140.2	424.6	420.2
Research and development	10.5	11.2	33.1	33.8
Total operating expenses	150.0	151.4	457.7	454.0
Operating profit	59.6	56.8	177.7	147.6
Other expense:
Interest expense, net	(77.9)	(84.7)	(233.4)	(256.3)
Foreign exchange (loss) gain	(4.7)	(11.2)	0.4	(47.5)
Other (expense) income, net	(0.1)	0.6	13.6	3.4
Total other expense	(82.7)	(95.3)	(219.4)	(300.4)
Loss before income taxes and non-controlling interests	(23.1)	(38.5)	(41.7)	(152.8)
Income tax benefit (expense)	18.8	1.6	(21.1)	(20.2)
Net loss from continuing operations	(4.3)	(36.9)	(62.8)	(173.0)
(Loss) income from discontinued operations, net of tax	(401.6)	(29.4)	(293.3)	23.1
Net loss	(405.9)	(66.3)	(356.1)	(149.9)
Net income attributable to the non-controlling interests	(3.0)	(2.9)	(3.5)	(4.8)
Net loss attributable to common stockholders	$ (408.9)	$ (69.2)	$ (359.6)	$ (154.7)
(Loss) earnings per share
Basic from continuing operations (in dollars per share)	$ (0.02)	$ (0.13)	$ (0.23)	$ (0.62)
Basic from discontinued operations (in dollars per share)	(1.40)	(0.11)	(1.02)	0.08
Basic (in dollars per share)	(1.42)	(0.24)	(1.25)	(0.54)
Diluted from continuing operations (in dollars per share)	(0.02)	(0.13)	(0.23)	(0.62)
Diluted from discontinued operations (in dollars per share)	(1.40)	(0.11)	(1.02)	0.08
Diluted (in dollars per share)	$ (1.42)	$ (0.24)	$ (1.25)	$ (0.54)
Weighted average common shares outstanding
Basic (in shares)	288.2	286.7	288.1	285.8
Diluted (in shares)	288.2	286.7	288.1	285.8