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Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jun. 29, 2018 | Jun. 30, 2017 | Jul. 01, 2016 | Jul. 03, 2015 | Sep. 29, 2017
Schedule of Fiscal Years [Line Items] |  |  |  |  |
Fiscal period duration |  | 365 days | 365 days | 371 days |
Advertising Expense |  |  |  |  |
Advertising costs |  | $ 16 | $ 31 | $ 64 |
Concentration of Credit Risk |  |  |  |  |
Debt issuance costs |  | $ 44 | 39 |  |
Minimum [Member] |  |  |  |  |
Establishment of Warranty Accruals |  |  |  |  |
Product warranty period term (in years) |  | 1 year |  |  |
Maximum [Member] |  |  |  |  |
Establishment of Warranty Accruals |  |  |  |  |
Product warranty period term (in years) |  | 5 years |  |  |
Scenario, forecast [Member] |  |  |  |  |
Schedule of Fiscal Years [Line Items] |  |  |  |  |
Fiscal period duration | 365 days |  |  |  |
Accounting Standards Update 2015-03 [Member] | Other Noncurrent Assets [Member] |  |  |  |  |
Concentration of Credit Risk |  |  |  |  |
Debt issuance costs |  |  | (39) |  |
Retained Earnings [Member] | Accounting Standards Update 2016-09 [Member] | Scenario, forecast [Member] |  |  |  |  |
Concentration of Credit Risk |  |  |  |  |
Cumulative effect adjustment |  |  |  |  | $ 500
Accounts Receivable [Member] |  |  |  |  |
Concentration of Credit Risk |  |  |  |  |
Percentage of consolidated revenue (as a percent) |  | 10.00% |  |  |
Other, Net [Member] |  |  |  |  |
Advertising Expense |  |  |  |  |
Foreign Currency Remeasurement gain loss |  | $ 4 | $ 0 | $ (30) |

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