Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
		Dec. 30, 2016	Jan. 01, 2016	Dec. 30, 2016	Jan. 01, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)		$ 235	$ 251	$ (131)	$ 534
Basic (in shares)		286,000,000	232,000,000	285,000,000	231,000,000
Employee stock options, RSUs, PSUs, ESPP		8,000,000	2,000,000	0	3,000,000
Diluted (in shares)		294,000,000	234,000,000	285,000,000	234,000,000
Basic		$ 0.82	$ 1.08	$ (0.46)	$ 2.31
Diluted (in dollars per share)		$ 0.80	$ 1.07	$ (0.46)	$ 2.28
Anti-dilutive potential common shares excluded	[1]	5,000,000	6,000,000	13,000,000	4,000,000

[1] (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.