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Balance Sheet Information (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2017
Jul. 01, 2016
Jul. 03, 2015
Jun. 27, 2014
Investments, Debt and Equity Securities [Abstract]        
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value $ 0 $ 0    
Available-for-sale Securities, Cost Basis of Other-than-temporarily Imparied Securities   0    
Depreciation Expense 581 641 $ 689  
Capitalized Interest 4 13 15  
Impairment of long-lived assets 42 26 0  
Property, Equipment and Leasehold Improvements, net        
Restricted Cash and Cash Equivalents, Current 4 7 7 $ 4
impairment and accelerated depreciation of long-lived assets 72   $ 0  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities 0      
Cost of revenue [Member]        
Property, Equipment and Leasehold Improvements, net        
impairment and accelerated depreciation of long-lived assets 35 $ 53    
Product development [Member]        
Property, Equipment and Leasehold Improvements, net        
impairment and accelerated depreciation of long-lived assets 35      
Marketing and administrative [Member]        
Property, Equipment and Leasehold Improvements, net        
impairment and accelerated depreciation of long-lived assets 2      
Land and Building [Member]        
Property, Equipment and Leasehold Improvements, net        
impairment and accelerated depreciation of long-lived assets $ 35