CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 1,853.7	$ 1,835.9	$ 1,961.0
Cost of sales	1,067.7	1,047.6	1,123.4
Gross profit	786.0	788.3	837.6
Operating expenses:
Selling, technical, general and administrative	504.7	497.0	544.8
Research and development	48.6	42.2	44.3
Total operating expenses	553.3	539.2	589.1
Operating profit	232.7	249.1	248.5
Other (expense) income:
Interest expense, net	(63.4)	(90.7)	(311.0)
Foreign exchange (loss) gain	(36.5)	28.7	(5.5)
Other (expense) income, net	(51.7)	(46.2)	14.8
Total other expense	(151.6)	(108.2)	(301.7)
Income (loss) before income taxes and non-controlling interests	81.1	140.9	(53.2)
Income tax expense	(4.3)	(61.3)	(23.8)
Net income (loss) from continuing operations	76.8	79.6	(77.0)
(Loss) income from discontinued operations, net of tax	(1.1)	13.3	(242.9)
Net income (loss)	75.7	92.9	(319.9)
Net income attributable to the non-controlling interests	0.0	(0.7)	(4.5)
Net loss attributable to common stockholders	$ 75.7	$ 92.2	$ (324.4)
Earnings (loss) per share
Basic from continuing operations (in dollars per share)	$ 0.31	$ 0.31	$ (0.27)
Basic from discontinued operations (in dollars per share)	(0.01)	0.05	(0.86)
Basic attributable to common stockholders (in dollars per share)	0.30	0.36	(1.13)
Diluted from continuing operations (in dollars per share)	0.31	0.30	(0.27)
Diluted from discontinued operations (in dollars per share)	(0.01)	0.05	(0.86)
Diluted attributable to common stockholders (in dollars per share)	$ 0.30	$ 0.35	$ (1.13)
Weighted average common shares outstanding
Basic (in shares)	248.8	257.6	288.2
Diluted (in Shares)	249.9	260.1	288.2