CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jun. 28, 2014
Income Statement [Abstract]
Product revenue	$ 808.8	$ 771.2	$ 814.9
Service revenue	97.5	102.7	112.0
Total net revenues	906.3	873.9	926.9
Product cost of revenues	278.1	259.1	296.0
Service cost of revenues	61.2	62.8	69.0
Amortization of acquired technologies	17.3	31.9	34.1
Total cost of revenues	356.6	353.8	399.1
Gross profit	549.7	520.1	527.8
Operating expenses:
Research and development	166.4	173.3	161.8
Selling, general and administrative	351.1	376.3	384.8
Impairment of goodwill	91.4	0.0	0.0
Amortization of other intangibles	14.6	19.5	15.5
Restructuring and related charges	10.5	26.8	21.3
Total operating expenses	634.0	595.9	583.4
Loss from operations	(84.3)	(75.8)	(55.6)
Interest and other income (expense), net	2.5	3.7	(1.2)
Gain on sale of investments	71.6	0.1	0.4
Interest expense	(35.7)	(33.3)	(29.4)
Loss from continuing operations before income taxes	(45.9)	(105.3)	(85.8)
Provision for (benefit from) income taxes	4.5	26.1	(11.2)
Loss from continuing operations, net of tax	(50.4)	(131.4)	(74.6)
(Loss) income from discontinued operations, net of tax	(48.8)	43.3	56.8
Net loss	$ (99.2)	$ (88.1)	$ (17.8)
Net loss per share from - basic and diluted:
Continuing operations (usd per share)	$ (0.22)	$ (0.57)	$ (0.32)
Discontinued operations (usd per share)	(0.20)	0.19	0.24
Net income (loss) (usd per share)	$ (0.42)	$ (0.38)	$ (0.08)
Shares used in per-share calculation - basic and diluted (in shares)	234.0	232.7	234.2