Shareholders' equity (Share repurchase program textuals) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 01, 2017	Feb. 25, 2017	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016
Shareholders' equity
Increase in authorized repurchase amount		$ 500,000
Shares repurchased during period (in shares)			3.1		3.1
Cost of repurchase			$ 140,100		$ 140,100
Cash dividends paid per common share		$ 0.18	$ 0.18	$ 0.17	$ 0.52	$ 0.51
Dividends paid on common stock	$ 23,100				$ 66,477	$ 66,944