CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 452.6	$ 459.8
Cost of sales	255.3	261.5
Gross profit	197.3	198.3
Operating expenses:
Selling, technical, general and administrative	125.2	142.4
Research and development	17.5	10.8
Total operating expenses	142.7	153.2
Operating profit	54.6	45.1
Other (expense) income:
Interest expense, net	(16.7)	(38.1)
Foreign exchange (loss) gain	(25.8)	27.1
Other income (expense), net	0.4	(48.0)
Total other expense	(42.1)	(59.0)
Income (loss) before income taxes and non-controlling interests	12.5	(13.9)
Income tax (expense) benefit	(4.1)	10.4
Net income (loss) from continuing operations	8.4	(3.5)
Income from discontinued operations, net of tax	0.2	27.4
Net income	8.6	23.9
Net income attributable to non-controlling interests	0.0	(0.7)
Net income attributable to common stockholders	$ 8.6	$ 23.2
Earnings (loss) per share
Basic from continuing operations (in dollars per share)	$ 0.03	$ (0.02)
Basic from discontinued operations (in dollars per share)	0	0.11
Basic (in dollars per share)	0.03	0.09
Diluted from continuing operations (in dollars per share)	0.03	(0.02)
Diluted from discontinued operations (in dollars per share)	0	0.11
Diluted (in dollars per share)	$ 0.03	$ 0.09
Weighted average common shares outstanding
Basic (in shares)	250.3	268.2
Diluted (in shares)	252.0	268.2