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Balance Sheet Information (Summary of fair value and amortized cost of investments, by major type) (Details) - USD ($)
$ in Millions
Apr. 02, 2021
Jul. 03, 2020
Available-for-sale debt securities:    
Amortized Cost $ 550 $ 569
Unrealized Gain/(Loss) 0 0
Fair Value 550 569
Cash and cash equivalents [Member]    
Available-for-sale debt securities:    
Fair Value 530 549
Other current assets [Member]    
Available-for-sale debt securities:    
Fair Value 2 2
Other Assets [Member]    
Available-for-sale debt securities:    
Fair Value 18 18
Money market funds [Member]    
Available-for-sale debt securities:    
Amortized Cost 531 495
Unrealized Gain/(Loss) 0 0
Fair Value 531 495
Time deposits and certificates of deposit [Member]    
Available-for-sale debt securities:    
Amortized Cost 1 56
Unrealized Gain/(Loss) 0 0
Fair Value 1 $ 56
Other debt securities    
Available-for-sale debt securities:    
Amortized Cost 18  
Unrealized Gain/(Loss) 0  
Fair Value $ 18