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Auditor's Remuneration - Summary of Auditors' Remuneration (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Auditors remuneration [Line Items]
Other assurance services	$ 1,343	$ 1,849	$ 1,508
Total assurance services	23,193	15,867	15,842
Other services	657	631	1,091
Total fees	23,850	16,498	16,933
Parent [Member]
Auditors remuneration [Line Items]
Audit	3,909	3,381	3,126
Subsidiaries, joint ventures and associates [member]
Auditors remuneration [Line Items]
Audit	13,902	7,040	7,715
Audit-related assurance services [member]
Auditors remuneration [Line Items]
Audit	4,039	3,597	3,493
Corporate finance [member]
Auditors remuneration [Line Items]
Other services	104	42	276
Other services [member]
Auditors remuneration [Line Items]
Other services	$ 553	$ 589	$ 815

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- Definition

Auditors remuneration assurance services.

+ References

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- Definition

Other assurance services comprise the aggregate fees for assurance and related services that are related to the performance of the audit or review of the financial statements and are not reported under total audit fees.

+ References

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Auditors remuneration.

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- Definition

The amount of fees paid or payable to the entity's auditors.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of fees paid or payable to the entity's auditors for auditing services.

+ References

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-Number 1
-IssueDate 2017-01-01
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- Definition

The amount of fees paid or payable to the entity's auditors for services that the entity does not separately disclose in the same statement or note.

+ References

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