Discontinued Operations (Details 2) - Spinoff - Lumentum - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015
Discontinued Operations
Net revenues	$ 198.3	$ 66.5	$ 627.3
Cost of revenues	139.1	49.8	426.5
Amortization of acquired technologies	1.9	0.6	5.7
Gross profit	57.3	16.1	195.1
Research and development	34.6	12.5	104.4
Selling, general and administrative	21.3	24.7	57.3
Restructuring charges	0.5	0.1	2.9
Total operating expenses	56.4	37.3	164.6
Income (loss) from operations	0.9	(21.2)	30.5
Interest and other income (expense), net	(0.5)	0.0	(0.8)
Income (loss) before income taxes	0.4	(21.2)	29.7
(Benefit from) provision for income taxes	(22.2)	24.4	(21.6)
Net income (loss) from discontinued operations	$ 22.6	$ (45.6)	$ 51.3