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Equity - contributed equity - Summary of equity - contributed equity (Detail) - AUD ($)
Jun. 30, 2021
Jun. 30, 2020
Sep. 14, 2016
Disclosure of classes of share capital [abstract]      
Ordinary shares - fully paid, shares 132,012,209 94,598,369 20,000,000
Ordinary shares - fully paid $ 80,290,062 $ 48,781,214