Shareholders' equity (Share repurchase program textuals) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018	Aug. 29, 2019
Shareholders' equity
Authorized repurchase of common stock under Share Repurchase Program				$ 2,950,000
Shares repurchased during period (in shares)	5.9
Stock Repurchased And Retired During Period Price Per Share	$ 40.28
Cost of repurchase	$ 236,400
Aggregate number of shares repurchased since inception (in shares)	64.7
Aggregate cost of shares repurchased since inception	$ 2,480,000
Remaining authorized repurchase amount	$ 469,000
Cash dividends paid per common share	$ 0.84	$ 0.80	$ 0.74
Dividends paid on common stock	$ 83,975	$ 87,158	$ 88,255