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v3.19.3

Equity - dividends - Additional Information (Detail) - AUD ($) | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Statement of changes in equity [abstract] |  |
Dividends paid | $ 0 | $ 0
Franking credits available | $ 0 |

X
- Definition The amount of dividends recognised as distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 107 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_107&doctype=Standard -URIDate 2018-03-16 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_StatementOfChangesInEquityAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Franking credits available. + References No definition available. + Details
Name: | kzia_FrankingCreditsAvailable
Namespace Prefix: | kzia_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant