Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Jun. 30, 2018
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	$ 675.2		$ 675.0
Accumulated Amortization	(458.6)		(439.9)
Net	216.6		235.1
Cost of revenues	9.4	$ 4.1
Operating expenses	9.8	3.1
Total amortization of intangible assets	19.2	$ 7.2
Estimated future amortization expense
Remainder of 2019	49.6
2020	59.8
2021	55.5
2022	28.3
2023	14.4
Total amortization	207.6
In-process research and development
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	9.0		9.0
Acquired developed technology
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	453.0		447.8
Accumulated Amortization	(339.8)		(326.4)
Net	113.2		121.4
Customer relationships
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	174.8		175.4
Accumulated Amortization	(105.2)		(97.1)
Net	69.6		78.3
Other
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	38.4		42.8
Accumulated Amortization	(13.6)		(16.4)
Net	$ 24.8		$ 26.4