Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended								12 Months Ended
		Jun. 29, 2018	Mar. 30, 2018	Dec. 29, 2017	Sep. 29, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 30, 2016	Sep. 30, 2016	Jun. 29, 2018	Jun. 30, 2017	Jul. 01, 2016
Earnings Per Share [Abstract]
Net income (loss)		$ 756	$ 61	$ (823)	$ 681	$ 280	$ 248	$ 235	$ (366)	$ 675	$ 397	$ 242
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic (in shares)										297	288	239
Employee stock options, RSUs, PSUs, ESPP (in shares)										10	8	3
Diluted (in shares)										307	296	242
Income per common share
Basic (in dollars per share)										$ 2.27	$ 1.38	$ 1.01
Diluted (in dollars per share)		$ 2.46	$ 0.20	$ (2.78)	$ 2.23	$ 0.93	$ 0.83	$ 0.80	$ (1.28)	$ 2.20	$ 1.34	$ 1.00
Anti-dilutive potential common shares excluded (in shares)	[1]									2	3	5

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