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
	Feb. 24, 2018	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Shareholders' equity
Authorized repurchase of common stock under Share Repurchase Program		$ 1,950,000		$ 1,950,000
Shares repurchased during period (in shares)		1.7		5.3
Cost of repurchase		$ 70,000		$ 209,500
Remaining authorized repurchase amount		$ 389,600		$ 389,600
Cash dividends paid per common share	$ 0.19	$ 0.19	$ 0.18	$ 0.55	$ 0.52
Dividends paid on common stock		$ 22,600		$ 66,198	$ 66,477