Shareholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Oct. 02, 2020	Jul. 03, 2020
Number of Shares
Options outstanding, beginning balance, shares	2.7
Exercised, shares	0.0
Canceled or expired, shares	(0.2)
Options outstanding, ending balance, shares	2.5	2.7
Exercisable, period end, shares	2.5
Weighted Average Exercise Price Per Share
Options outstanding, beginning balance, exercise price, in dollars per share	$ 69.16
Exercised, exercise price, in dollars per share	18.30
Canceled or expired, exercise price, in dollars per share	68.81
Options outstanding, ending balance, exercise price, in dollars per share	69.21	$ 69.16
Exercisable, period end, exercise price, in dollars per share	$ 69.21
Options outstanding, weighted average remaining contractual term	1 year 6 months	2 years 1 month 6 days
Exercisable, period end, weighted average remaining contractual life	1 year 6 months
Aggregate Intrinsic Value
Exercised, intrinsic value	$ 0
Options outstanding, ending balance, intrinsic value	0	$ 0
Exercisable, period end, intrinsic value	$ 0