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Balance Sheet Information Balance Sheet Information (Narrative) (Details) - USD ($)
$ in Millions
Jan. 01, 2016
Jul. 03, 2015
Schedule of Available-for-sale Securities [Line Items]    
Marketable Securities, Restricted, Current $ 7 $ 7
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 $ 0