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Auditor's Remuneration - Summary of Auditors' Remuneration (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Auditors remuneration [line items]      
Total assurance services $ 20,292 $ 15,513 $ 16,276
Other services 0   400
Total other services 0   400
Total fees 20,292 15,513 16,676
Parent [member]      
Auditors remuneration [line items]      
Total assurance services 9,816 10,642 11,196
Subsidiaries, joint ventures and associates [member]      
Auditors remuneration [line items]      
Total assurance services 605 1,234 1,262
Audit-related assurance services required by legislation to be provided by the auditor [Member]      
Auditors remuneration [line items]      
Total assurance services 1,933 1,770 1,815
Other assurance and agreed-upon procedures under legislation or contractual arrangements [Member]      
Auditors remuneration [line items]      
Total assurance services $ 7,938 $ 1,867 $ 2,003