Shareholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jun. 29, 2018
Number of Shares
Options outstanding, beginning balance, shares	3,900,000	4,800,000	7,400,000
Exercised, shares	(800,000)	(400,000)	(2,200,000)
Canceled or expired, shares	(400,000)	(500,000)	(400,000)
Options outstanding, ending balance, shares	2,700,000	3,900,000	4,800,000
Exercisable, period end, shares	2,600,000
Weighted Average Exercise Price Per Share
Options outstanding, beginning balance, exercise price, in dollars per share	$ 65.72	$ 64.23	$ 58.14
Exercised, exercise price, in dollars per share	43.26	39.58	44.52
Canceled or expired, exercise price, in dollars per share	88.58	74.79	60.85
Options outstanding, ending balance, exercise price, in dollars per share	69.16	$ 65.72	$ 64.23
Exercisable, period end, exercise price, in dollars per share	$ 70.10
Aggregate Intrinsic Value
Exercised, intrinsic value	$ 12	$ 8	$ 99
Options outstanding, ending balance, intrinsic value	0
Exercisable, period end, intrinsic value	$ 0
Options outstanding, weighted average remaining contractual term	2 years 1 month 6 days
Exercisable, period end, weighted average remaining contractual life	2 years 1 month 6 days
Options granted (in shares)	0	0	0