Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 29, 2019
Income Statement [Abstract]
Net revenue	$ 1,339.6	$ 1,333.9	$ 1,472.2
Cost of revenue	728.4	790.8	975.1
Gross margin	611.2	543.1	497.1
Operating expenses:
Research and development	313.4	302.5	342.7
Selling, general, and administrative	144.9	127.0	131.3
Acquired intangibles amortization	32.7	11.7	11.7
Restructuring costs	7.4	33.0	17.7
Gain on sale of audio technology assets	(34.2)
Total operating expenses	464.2	474.2	503.4
Operating income/(loss)	147.0	68.9	(6.3)
Interest and other income	2.9	7.9	3.9
Interest expense	(29.5)	(22.5)	(21.2)
Loss on redemption of convertible notes	(0.3)
Gain on sale of assets		105.1
Impairment recovery on investments, net			2.8
Income/(loss) before provision for income taxes and equity investment loss	120.1	159.4	(20.8)
Provision for income taxes	31.4	38.6	0.3
Equity investment loss	(9.1)	(2.0)	(1.8)
Net income/(loss)	$ 79.6	$ 118.8	$ (22.9)
Net income/(loss) per share:
Basic	$ 2.29	$ 3.54	$ (0.66)
Diluted	$ 2.08	$ 3.41	$ (0.66)
Shares used in computing net income/(loss) per share:
Basic	34.8	33.6	34.6
Diluted	38.3	34.8	34.6