Operating Segments (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015
Information on reportable segments
Amortization of acquired technologies	$ (4.1)	$ (9.0)	$ (13.0)	$ (26.3)
Gross profit	131.3	127.0	413.6	389.0
Stock-based compensation	(9.1)	(14.8)	(34.0)	(35.8)
Amortization of intangibles	(3.6)	(4.8)	(11.1)	(14.7)
Restructuring and related charges	0.1	(7.8)	(1.7)	(18.0)
Operating income (loss)	7.2	(23.2)	13.5	(56.8)
Severance and related costs			3.5
Segment Measures
Information on reportable segments
Gross profit	136.4	137.7	430.4	419.7
Operating income (loss)	26.2	19.0	85.4	51.1
Reconciling Items
Information on reportable segments
Stock-based compensation	(1.1)	(1.1)	(3.7)	(3.1)
Amortization of acquired technologies	(4.1)	(9.0)	(13.0)	(26.3)
Other charges related to non-recurring activities	0.1	(0.6)	(0.1)	(1.3)
Gross profit	(5.1)	(10.7)	(16.8)	(30.7)
Stock-based compensation	(9.1)	(14.8)	(34.0)	(35.8)
Amortization of intangibles	(7.7)	(13.8)	(24.1)	(41.0)
Other charges related to non-recurring activities	(2.3)	(5.8)	(12.1)	(13.1)
Restructuring and related charges	0.1	(7.8)	(1.7)	(18.0)
Operating income (loss)	$ (19.0)	$ (42.2)	$ (71.9)	$ (107.9)