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Income tax benefit - Summary of Income tax benefit (Parenthetical) (Detail)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Disclosure Of Income Tax Benefit [line items]
Statutory tax rate	26.00%	27.50%	27.50%
Australia [member]
Disclosure Of Income Tax Benefit [line items]
Statutory tax rate	26.00%	27.50%	27.50%
US [member]
Disclosure Of Income Tax Benefit [line items]
Statutory tax rate	21.00%	21.00%	21.00%

X

- Definition

The applicable income tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2020-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2020-01-01

+ Details

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X

- Definition

Disclosure of income tax benefit [line items]

+ References

No definition available.

+ Details

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X

- Details

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Namespace Prefix:
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X

- Details

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