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Guarantees (Product Warranty) (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2017
Jul. 01, 2016
Jul. 03, 2015
Jun. 27, 2014
Guarantees [Abstract]        
Balance, beginning of period $ 233 $ 206 $ 248 $ 273
Warranties issued 131 125 147  
Repairs and replacements 114 152 187  
Changes in liability for pre-existing warranties, including expirations 10 (17) 7  
Warranty liability assumed from acquisitions 0 2 8  
Balance, end of period $ 233 $ 206 $ 248