Shareholders' Equity Restricted Stock Units And Performance Share Units (Detail) - Restricted Stock Units And Performance Share Units - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jul. 01, 2016
Number of Shares
Outstanding, beginning balance, shares	13.7	15.7	3.0
Granted, shares	6.3	6.0	2.7
Vested, shares	(6.3)	(5.9)	(2.0)
Canceled or expired, shares	(1.1)	(2.1)	(0.5)
Outstanding, ending balance, shares	12.6	13.7	15.7
Weighted Average Grant Date Fair Value
Outstanding, beginning balance, grant date fair value, in dollars per share	$ 45.01	$ 41.92	$ 73.80
Granted, grant date fair value, in dollars per share	74.68	44.13	61.32
Vested, grant date fair value, in dollars per share	45.20	46.98	56.11
Canceled or expired, grant date fair value, in dollars per share	50.35	43.89	62.09
Outstanding, ending balance, grant date fair value, in dollars per share	$ 58.31	$ 45.01	$ 41.92
Aggregate value of restricted stock awards vested	$ 552	$ 399	$ 144
SanDisk
Number of Shares
Assumed, shares			12.5
Weighted Average Grant Date Fair Value
Assumed, grant date fair value, in dollars per share			$ 32.14