Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016	Jul. 02, 2016
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	$ 472.5		$ 472.5		$ 475.7
Accumulated Amortization	(434.9)		(434.9)		(415.8)
Net	37.6		37.6		59.9
Amortization of acquired developed technologies	3.6	$ 4.1	11.1	$ 13.0
Amortization of other intangibles	3.5	3.6	10.4	11.1
Total amortization of intangible assets	7.1	$ 7.7	21.5	$ 24.1
Estimated future amortization expense
Remainder of 2017	6.7		6.7
2018	19.9		19.9
2019	9.3		9.3
2020	1.4		1.4
2021	0.3		0.3
Thereafter	0.0		0.0
Total amortization	37.6		37.6
Acquired developed technology
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	366.9		366.9		369.3
Accumulated Amortization	(346.5)		(346.5)		(337.3)
Net	20.4		20.4		32.0
Customer relationships
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	94.8		94.8		95.6
Accumulated Amortization	(77.8)		(77.8)		(68.0)
Net	17.0		17.0		27.6
Other
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	10.8		10.8		10.8
Accumulated Amortization	(10.6)		(10.6)		(10.5)
Net	$ 0.2		$ 0.2		$ 0.3