Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019	Jun. 29, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 660.0		$ 660.0		$ 666.8
Accumulated Amortization	(502.3)		(502.3)		(455.2)
Net	157.7		157.7		211.6
Cost of revenues	8.0	$ 7.9	24.8	$ 25.8
Operating expenses	8.9	9.2	26.4	29.4
Total amortization of intangible assets	16.9	$ 17.1	51.2	$ 55.2
Estimated future amortization expense
Remainder of 2020	16.5		16.5
2021	62.5		62.5
2022	36.7		36.7
2023	23.0		23.0
2024	9.1		9.1
Thereafter	9.9		9.9
Total amortization	157.7		157.7
Acquired developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	432.7		432.7		437.0
Accumulated Amortization	(333.5)		(333.5)		(311.1)
Net	99.2		99.2		125.9
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	191.8		191.8		193.7
Accumulated Amortization	(146.7)		(146.7)		(126.3)
Net	45.1		45.1		67.4
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	35.5		35.5		36.1
Accumulated Amortization	(22.1)		(22.1)		(17.8)
Net	$ 13.4		$ 13.4		$ 18.3