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Balance Sheet Information (Summary of fair value and amortized cost of investments, by major type)(Details) - USD ($) $ in Millions | Jun. 30, 2017 | Jul. 01, 2016
--- | --- | ---
Available-for-sale securities: |  |
Available-for-sale securities, Amortized Cost | $ 1,178 | $ 243
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax | 0 | 0
Available-for-sale securities, Fair Value | 1,178 | 243
Money market funds [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Amortized Cost | 594 | 232
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax | 0 | 0
Available-for-sale securities, Fair Value | 594 | 232
Time deposits and certificates of deposit [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Amortized Cost | 584 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax | 0 |
Available-for-sale securities, Fair Value | 584 |
Corporate bonds [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Amortized Cost |  | 6
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax |  | 0
Available-for-sale securities, Fair Value |  | 6
Certificates of deposit [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Amortized Cost |  | 5
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax |  | 0
Available-for-sale securities, Fair Value |  | 5
Cash and Cash Equivalents [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 1,174 | 230
Other Current Assets [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | $ 4 | 7
Short-term Investments [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value |  | $ 6

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