Shareholders' Equity Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jul. 01, 2016
Number of Shares
Options outstanding, beginning balance, shares	7.4	9.0	6.8
Granted, shares		2.8	1.7
Exercised, shares	(2.2)	(3.5)	(1.7)
Forfeited or expired, shares	(0.4)	(0.9)	(0.7)
Options outstanding, ending balance, shares	4.8	7.4	9.0
Exercisable, period end, shares	3.0
Weighted Average Exercise Price Per Share
Options outstanding, beginning balance, exercise price, in dollars per share	$ 58.14	$ 55.74	$ 50.00
Granted, exercise price, in dollars per share		44.83	82.68
Exercised, exercise price, in dollars per share	44.52	37.72	27.43
Forfeited or expired, exercise price, in dollars per share	60.85	71.31	66.03
Options outstanding, ending balance, in dollars per share	64.23	$ 58.14	$ 55.74
Exercisable, period end, exercise price, in dollars per share	$ 70.70
Aggregate Intrinsic Value
Exercised, intrinsic value	$ 99	$ 120	$ 57
Options outstanding, ending balance, intrinsic value	94
Exercisable, period end, intrinsic value	$ 47
Options outstanding, weighted average remaining contractual term	3 years 8 months
Exercisable, period end, weighted average remaining contractual life	3 years 1 month
SanDisk
Number of Shares
Assumed, shares			2.9
Weighted Average Exercise Price Per Share
Assumed, exercise price, in dollars per share			$ 38.37