Investments Available-for-Sale Investments - Additional Information (Detail) - USD ($) $ in Millions	Jul. 03, 2015	Jun. 27, 2014
Schedule of Available-for-sale Securities [Line Items]
Cost basis	$ 590	$ 499
Unrealized gain (loss)	0	0
Fair value	590	499
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis	262
Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value	262
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	328
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	328
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	590
Available-for-sale Securities, Debt Securities	590
U.S. Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost basis	95	88
Unrealized gain (loss)	0	0
Fair value	95	88
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost basis	287	180
Unrealized gain (loss)	0	0
Fair value	287	180
Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost basis	109	165
Unrealized gain (loss)	0	0
Fair value	109	165
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost basis	99	66
Unrealized gain (loss)	0	0
Fair value	$ 99	$ 66