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Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net revenue	$ 394.0	$ 444.2	$ 1,241.8	$ 1,291.7
Cost of revenue	271.1	309.5	889.3	894.9
Gross margin	122.9	134.7	352.5	396.8
Operating expenses:
Research and development	93.7	71.6	273.0	218.5
Selling, general, and administrative	37.9	38.1	115.6	105.0
Acquired intangibles amortization	1.4	2.4	8.5	9.3
Restructuring	2.2	0.3	8.6	7.3
Litigation settlement charge		10.0		10.0
Total operating expenses	135.2	122.4	405.7	350.1
Operating income/(loss)	(12.3)	12.3	(53.2)	46.7
Interest and other expense, net	(4.7)	(1.5)	(15.4)	(1.8)
Income/(loss) before provision/(benefit) for income taxes and equity investment loss	(17.0)	10.8	(68.6)	44.9
Provision/(benefit) for income taxes	(3.9)	6.3	52.6	13.9
Equity investment loss	(0.6)		(1.4)
Net income/(loss)	$ (13.7)	$ 4.5	$ (122.6)	$ 31.0
Net income/(loss) per share:
Basic	$ (0.40)	$ 0.13	$ (3.61)	$ 0.89
Diluted	$ (0.40)	$ 0.13	$ (3.61)	$ 0.87
Shares used in computing net income/(loss) per share:
Basic	34.5	34.8	34.0	34.9
Diluted	34.5	35.4	34.0	35.7

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