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Shareholders' Equity (Schedule of Share Repurchases) (Details) - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Jun. 30, 2017
Jul. 01, 2016
Jul. 03, 2015
Repurchases of Equity Securities, Number of Shares Repurchased      
Number of shares repurchased, cumulative, beginning of the period (in shares) 328 304 285
Number of shares repurchased, during the period (in shares) 13 [1] 24 [1] 19
Number of shares repurchased, cumulative, end of the period (in shares) 341 328 304
Repurchases of Equity Securities, Dollar Value of Shares Repurchased      
Dollar value of shares repurchased, cumulative, beginning of the period $ 9,631 $ 8,485 $ 7,398
Dollar value of shares repurchased during the period     1,087
Dollar value of shares repurchased and canceled for tax withholding purposes during the period [1] 487 1,146  
Dollar value of shares repurchased, cumulative, end of the period 10,118 9,631 $ 8,485
Settlement in connection with tax withholding $ 27 $ 56  
Settlement of shares in connection with tax withholding (in shares) 1 1  
[1] For fiscal years 2017 and 2016, including net share settlement of $27 million and $56 million, for 1 million and 1 million shares in connection with tax withholding related to vesting of restricted stock units, respectively.