Shareholders' equity (Share repurchase program textuals) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		3 Months Ended	6 Months Ended
	Nov. 23, 2022	Dec. 31, 2022	Dec. 31, 2022	Jan. 01, 2022
Shareholders' equity
Increase in authorized repurchase amount		$ 600,000	$ 600,000
Shares repurchased during period (in shares)		1.6
Cost of repurchase		$ 64,400
Remaining authorized repurchase amount		319,000	319,000
Common Stock, Dividends, Per Share, Declared	$ 0.29
Dividends paid on common stock		$ 26,300	$ 53,304	$ 47,642