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Share-based compensation - Additional Information (Details) - USD ($)
12 Months Ended
Jun. 28, 2024
Jun. 30, 2023
Jun. 24, 2022
Jun. 25, 2021
Dec. 12, 2019
Nov. 02, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation costs capitalized $ 0 $ 0 $ 0      
Number of ordinary shares available for future grant (in shares) 1,857,415          
Shares authorized for future issuance (in shares)         1,281,619  
Shares withheld to settle employee minimum statutory obligation for applicable income and other employment taxes (in shares) 104,892 177,139        
Tax withholdings related to net share settlement of restricted share units $ 13,175,000 $ 18,167,000 20,824,000      
Restricted Share Units and Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total fair value of restricted share units vested 26,000,000.0 $ 28,400,000 $ 24,200,000      
Aggregate intrinsic value of restricted share units outstanding $ 116,900,000          
Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 306,660 368,765 459,626 641,875    
Restricted Share Units | Non-employee Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 1 year          
Restricted Share Units | Vesting, option one            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 3 years          
Restricted Share Units | Vesting, option two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 4 years          
Restricted Share Units | Vest on the first of January | Non-employee Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage 100.00%          
Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 171,078 204,016 285,882 427,028    
Performance Share Units | Executive of the Company            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 2 years          
Performance Share Units | Vest at the end of the performance period | Executive of the Company | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage 0.00%          
Performance Share Units | Vest at the end of the performance period | Executive of the Company | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage 100.00%          
Equity Incentive Plans | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized share-based compensation expense $ 13,400,000          
Unrecognized compensation expense, weighted-average period for recognition 2 years 6 months          
Equity Incentive Plans | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized share-based compensation expense $ 6,800,000          
Unrecognized compensation expense, weighted-average period for recognition 1 year          
2020 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of ordinary shares available for future grant (in shares) 1,746,068       1,700,000  
Shares reserved for future issuance (in shares)         1,300,000  
2020 Plan | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 306,660          
2020 Plan | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 171,078          
2017 Inducement Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares authorized for future issuance (in shares)           160,000
Share units outstanding (in shares) 111,347          
2017 Inducement Plan | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 0          
2017 Inducement Plan | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 0