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Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenues	$ 336.4	$ 242.5	$ 616.9	$ 426.9
Cost of sales	129.9	88.9	241.6	154.4
Gross profit	206.5	153.6	375.3	272.5
Operating expenses:
Research and development	69.0	47.2	128.0	92.0
Selling, general and administrative	138.3	111.3	262.5	216.1
Total operating expenses	207.3	158.5	390.5	308.1
Operating loss	(0.8)	(4.9)	(15.2)	(35.6)
Interest expense	(15.0)	(4.8)	(29.9)	(9.6)
Income (loss) from equity investments	0.0	42.7	(4.2)	50.1
Interest and other income (expense), net	6.5	(3.4)	13.4	0.7
Income (loss) before income taxes	(9.3)	29.6	(35.9)	5.6
Income tax expense (benefit)	1.2	(0.6)	1.5	(0.4)
Net income (loss)	$ (10.5)	$ 30.2	$ (37.4)	$ 6.0
Basic net income (loss) per share	$ (0.12)	$ 0.34	$ (0.41)	$ 0.07
Shares used to compute basic net income (loss) per share	91.1	88.2	90.7	87.7
Diluted net income (loss) per share	$ (0.12)	$ 0.34	$ (0.41)	$ 0.07
Shares used to compute diluted net income (loss) per share	91.1	89.4	90.7	88.8

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-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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