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Recently Adopted Accounting Pronouncements Recent Accounting Pronouncements (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 29, 2018 | Jun. 30, 2018 | Sep. 29, 2017 | Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Adoption of New Accounting Standards | $ 51 |  |  |
Excess tax benefit from share-based compensation, operating activities | 78 |  |  |
Retained earnings | $ 8,757 |  |  | $ 8,633
Retained Earnings | Accounting Standards Update 2016-09 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Adoption of New Accounting Standards |  |  | $ 70 |
Retained Earnings | Accounting Standards Update 2016-09 | Windfall Tax Benefit, Unrecognized |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Adoption of New Accounting Standards |  |  | 58 |
Retained Earnings | Accounting Standards Update 2016-09 | Cumulative Adjustment, Change in Accounting Policy |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Adoption of New Accounting Standards |  |  | 19 |
Retained Earnings | Accounting Standards Update 2016-09 | Cumulative Adjustment, Change in Accounting Policy, Tax Impact |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Adoption of New Accounting Standards |  |  | $ (7) |
Pro Forma | Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09 |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Retained earnings |  | $ 54 |  |

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