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Key management personnel disclosures, Movement in Options and RSUs Outstanding Issued to Directors and Other Members of KMP (Details) - Share Options and Restricted Share Units [Member]
12 Months Ended
Jun. 30, 2023
shares
$ / shares
Jun. 30, 2022
shares
$ / shares
Number of Options and RSUs [Abstract]    
Outstanding at beginning of year (in shares) | shares 6,973,516 2,136,171
Granted during the year (in shares) | shares 3,070,379 5,014,834
Forfeited during the year (in shares) | shares (31,671) (177,489)
Exercised during the period (in shares) | shares (4,000) 0
Outstanding at end of year (in shares) | shares 10,008,224 6,973,516
Exercisable at end of year (in shares) | shares 2,017,021 2,035,278
Weighted Average Exercise Price [Abstract]    
Outstanding at beginning of year (in dollars per share) | $ / shares $ 53.16 $ 4.1
Granted during the year (in dollars per share) | $ / shares 2.97 72.46
Forfeited during the year (in dollars per share) | $ / shares 36.45 7.9
Exercised during the period (in dollars per share) | $ / shares 0 0
Outstanding at end of year (in dollars per share) | $ / shares 37.84 53.16
Exercisable at end of year (in dollars per share) | $ / shares $ 3.87 $ 3.95