Earnings per ordinary share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 24, 2022	Jun. 25, 2021
Earnings Per Share [Abstract]
Net income attributable to shareholders	$ 247,913	$ 200,380	$ 148,341
Weighted-average number of ordinary shares outstanding (thousands of shares)	36,515	36,876	36,872
Incremental shares arising from the assumed exercise of share options and vesting of restricted share units and performance share units (thousands of shares)	340	518	683
Weighted-average number of ordinary shares for diluted earnings per ordinary share (thousands of shares)	36,855	37,394	37,555
Basic earnings per ordinary share	$ 6.79	$ 5.43	$ 4.02
Diluted earnings per ordinary share	$ 6.73	$ 5.36	$ 3.95
Outstanding performance share units excluded from the computation of diluted earnings per ordinary share (thousands of shares)	0	0	53