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Auditor's Remuneration - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Auditors remuneration [line items]      
Fees payable in respect of the audit of pension funds $ 15,513 $ 16,276 $ 14,515
Tax compliance and advisory services   400 13
Tax compliance services [member]      
Auditors remuneration [line items]      
Tax compliance and advisory services 0 269 13
Pension funds [member]      
Auditors remuneration [line items]      
Fees payable in respect of the audit of pension funds $ 0 0 0
Tax Advisory Services [Member]      
Auditors remuneration [line items]      
Tax compliance and advisory services   $ 131 $ 0