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Income tax benefit - Summary of Income tax benefit (Parenthetical) (Detail) | 12 Months Ended
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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%

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- 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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- Definition Disclosure of income tax benefit [line items] + References No definition available. + Details
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- Details
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- Details
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