Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Jun. 27, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 675.8		$ 667.5
Accumulated Amortization	(541.4)		(519.4)
Net	134.4		148.1
Cost of revenues	8.2	$ 8.4
Operating expenses	8.5	8.7
Total amortization of intangible assets	16.7	$ 17.1
Estimated future amortization expense
Remainder of 2021	48.4
2021	38.6
2022	24.7
2023	10.2
2024	5.6
Thereafter	6.9
Total amortization	134.4
Acquired developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	441.9		437.1
Accumulated Amortization	(352.8)		(341.6)
Net	89.1		95.5
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	197.3		194.7
Accumulated Amortization	(163.0)		(154.1)
Net	34.3		40.6
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36.6		35.7
Accumulated Amortization	(25.6)		(23.7)
Net	$ 11.0		$ 12.0