Net Income (Loss) Per Common Share Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Dec. 29, 2017	Dec. 30, 2016	Dec. 29, 2017	Dec. 30, 2016
Earnings Per Share [Abstract]
Net income (loss)		$ (823)	$ 235	$ (142)	$ (131)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic (in shares)		296	286	295	285
Employee stock options, RSUs, PSUs, ESPP (in shares)		0	8	0	0
Diluted (in shares)		296	294	295	285
Income (loss) per common share
Basic (in dollars per share)		$ (2.78)	$ 0.82	$ (0.48)	$ (0.46)
Diluted (in dollars per share)		$ (2.78)	$ 0.80	$ (0.48)	$ (0.46)
Anti-dilutive potential common shares excluded (in shares)	[1]	12	5	12	13

[1] For purposes of computing diluted income (loss) per common share, certain potentially dilutive securities have been excluded from the calculation because their effect would have been anti-dilutive.