Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020	Jun. 27, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 688.3		$ 688.3		$ 667.5
Accumulated Amortization	(583.7)		(583.7)		(519.4)
Net	104.6		104.6		148.1
Cost of revenues	8.3	$ 8.0	24.9	$ 24.8
Operating expenses	8.3	8.9	24.9	26.4
Total amortization of intangible assets	16.6	$ 16.9	49.8	$ 51.2
Estimated future amortization expense
Remainder of 2021	16.5		16.5
2021	39.7		39.7
2022	25.5		25.5
2023	10.3		10.3
2024	5.7		5.7
Thereafter	6.9		6.9
Total amortization	104.6		104.6
Acquired developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	449.2		449.2		437.1
Accumulated Amortization	(374.3)		(374.3)		(341.6)
Net	74.9		74.9		95.5
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	201.2		201.2		194.7
Accumulated Amortization	(179.6)		(179.6)		(154.1)
Net	21.6		21.6		40.6
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	37.9		37.9		35.7
Accumulated Amortization	(29.8)		(29.8)		(23.7)
Net	$ 8.1		$ 8.1		$ 12.0