CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 550.1	$ 452.6
Cost of sales	309.1	255.3
Gross profit	241.0	197.3
Operating expenses:
Selling, technical, general and administrative	129.6	125.2
Research and development	11.5	17.5
Total operating expenses	141.1	142.7
Operating profit	99.9	54.6
Other (expense) income:
Interest expense, net	(12.9)	(16.7)
Foreign exchange gain (loss)	28.0	(25.8)
Other (expense) income, net	(1.6)	0.4
Total other income (expense)	13.5	(42.1)
Income before income taxes and non-controlling interests	113.4	12.5
Income tax expense	(31.1)	(4.1)
Net income from continuing operations	82.3	8.4
Income from discontinued operations, net of tax	0.0	0.2
Net income attributable to common stockholders	$ 82.3	$ 8.6
Earnings per share
Basic from continuing operations (in dollars per share)	$ 0.33	$ 0.03
Basic from discontinued operations (in dollars per share)	0	0
Basic attributable to common stockholders (in dollars per share)	0.33	0.03
Diluted from continuing operations (in dollars per share)	0.33	0.03
Diluted from discontinued operations (in dollars per share)	0	0
Diluted attributable to common stockholders (in dollars per share)	$ 0.33	$ 0.03
Weighted average common shares outstanding
Basic (in shares)	247.2	250.3
Diluted (in shares)	248.6	252.0