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Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2017 | Jul. 01, 2016 | Jul. 03, 2015 | Jun. 30, 2016 | Jun. 27, 2014
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |  |
Income Tax Holiday, Aggregate Dollar Amount | $ 163.0 | $ 67.0 | $ 349.0 |  |
Tax benefit from exercise of stock options |  | 0.6 | 2.0 |  |
Increase (Decrease) in valuation allowance | 18.0 | (55.0) | $ (41.0) |  |
Deferred tax asset, net, excluding intra-entity transfers | 602.0 |  |  |  |
Total net deferred tax assets | $ 604.0 | $ 606.0 |  |  |
Domestic federal statutory rate (as a percent) | 25.00% | 25.00% | 25.00% |  |
Income tax holiday tax incentive income tax benefits per share (in dollars per share) | $ 0.54 | $ 0.22 | $ 1.05 |  |
Deferred tax liability not recognized due to temporary difference, undistributed earnings of foreign subsidiaries | $ 1,500.0 |  |  |  |
Unremitted earnings of certain non-U.S. entities | 7.0 | $ 11.0 |  |  |
Tax amount, if temporary difference were remitted to Ireland as a dividend | 375.0 |  |  |  |
Total gross unrecognized tax benefits excluding interest and penalties | 74.0 | 76.0 | $ 89.0 |  | $ 120.0
Unrecognized tax benefits, if recognized, would impact effective tax rate | 74.0 | 76.0 |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 1.0 | 8.0 | $ 26.0 |  |
Accrued interest and penalties related to unrecognized tax benefits | 4.0 | $ 6.0 |  |  |
Minimum [Member] |  |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |  |
Expected unrecognized tax benefits reduction | 14.0 |  |  |  |
U.S. Federal [Member] |  |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |  |
Net operating loss carryforwards | 3,400.0 |  |  |  |
Tax credit carryforwards | 444.0 |  |  |  |
NOL subject to annual limitation on use | 560.0 |  |  |  |
Tax credit carryforwards subject to annual limitation on use | 101.0 |  |  |  |
Aggregate annual limitation on use of NOL and tax credit carryforwards pursuant to U.S. tax law | 45.0 |  |  | $ 1.0 |
State [Member] |  |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |  |
Net operating loss carryforwards | 2,000.0 |  |  |  |
Operating Loss Carryforwards Expiration Amount | 68.0 |  |  |  |
Tax credit carryforwards | 105.0 |  |  |  |
Non-U.S. [Member] |  |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |  |
Net operating loss carryforwards | $ 200.0 |  |  |  |

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