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Income Taxes - Components of Net Deferred Taxes (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jul. 01, 2017	Jul. 02, 2016
Gross deferred tax assets:
Tax credit carryforwards	$ 158.8	$ 150.6	$ 141.0
Net operating loss carryforwards	1,219.0	1,875.4	1,846.3
Capital loss carryforwards	63.9	102.4	145.9
Inventories	4.0	5.4	6.1
Accruals and reserves	21.8	30.3	27.4
Investments	0.4	0.7	34.4
Other	43.6	51.9	60.3
Acquisition-related items	31.5	55.5	65.2
Gross deferred tax assets	1,543.0	2,272.2	2,326.6
Valuation allowance	(1,383.7)	(2,097.8)	(2,174.3)
Deferred tax assets	159.3	174.4	152.3
Gross deferred tax liabilities:
Acquisition-related items	(26.8)	(6.5)	(13.2)
Undistributed foreign earnings	0.0	(3.0)	0.0
Other	(38.1)	(57.3)	(31.1)
Deferred tax liabilities	(64.9)	(66.8)	(44.3)
Total net deferred tax assets	$ 94.4	$ 107.6	$ 108.0

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