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Acquired Developed Technology and Other Intangibles (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016	Jul. 01, 2017
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	$ 503.8		$ 503.8		$ 474.1
Accumulated Amortization	(460.5)		(460.5)		(443.0)
Net	43.3		43.3		31.1
Cost of revenues	4.1	$ 3.7	8.2	$ 7.5
Operating expenses	3.4	3.4	6.5	6.9
Total amortization of intangible assets	7.5	$ 7.1	14.7	$ 14.4
Estimated future amortization expense
Remainder of 2018	12.3		12.3
2019	16.3		16.3
2020	8.4		8.4
2021	4.1		4.1
2022	2.0		2.0
Thereafter	0.2		0.2
Total amortization	43.3		43.3
Acquired developed technology
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	387.2		387.2		369.3
Accumulated Amortization	(362.2)		(362.2)		(352.0)
Net	25.0		25.0		17.3
Customer relationships
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	106.4		106.4		94.9
Accumulated Amortization	(88.2)		(88.2)		(81.3)
Net	18.2		18.2		13.6
Other
Acquired developed technology, customer relationships and other intangibles
Gross Carrying Amount	10.2		10.2		9.9
Accumulated Amortization	(10.1)		(10.1)		(9.7)
Net	$ 0.1		$ 0.1		$ 0.2

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The amount of expense recognized in the current period that reflects the allocation of the costs of intangible assets over the expected benefit period of such assets. This element applies only to intangible assets used in the production of goods.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Sum of the carrying amounts of all intangible assets, excluding goodwill and research and development intangible assets not amortized, as of the balance sheet date, net of accumulated amortization and impairment charges.

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