Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018	Jun. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 712.9		$ 712.9		$ 675.0
Accumulated Amortization	(494.4)		(494.4)		(439.9)
Net	218.5		218.5		235.1
Cost of revenues	7.9	$ 6.2	25.8	$ 14.4
Operating expenses	9.2	4.5	29.4	11.0
Total amortization of intangible assets	17.1	$ 10.7	55.2	$ 25.4
Estimated future amortization expense
Remainder of 2019	17.1		17.1
2020	66.2		66.2
2021	61.9		61.9
2022	35.2		35.2
2023	21.3		21.3
Thereafter	16.8		16.8
Total amortization	218.5		218.5
In-process research and development
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets					9.0
Acquired developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	487.0		487.0		447.8
Accumulated Amortization	(356.0)		(356.0)		(326.4)
Net	131.0		131.0		121.4
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	188.7		188.7		175.4
Accumulated Amortization	(121.3)		(121.3)		(97.1)
Net	67.4		67.4		78.3
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	37.2		37.2		42.8
Accumulated Amortization	(17.1)		(17.1)		(16.4)
Net	$ 20.1		$ 20.1		$ 26.4