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Share-Based Payments - Summary of Share/Rights Options Outstanding (Details)
 12 Months Ended
Jun. 30, 2025
shares
$ / shares
Jun. 30, 2024
shares
$ / shares
Jun. 30, 2023
shares
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [abstract]      
Balance, number of options and rights | shares 35,300,000 25,450,000 22,988,000
To employees and directors under the LTIP and NED Plan, number of options and rights | shares 16,127,200 9,850,000 10,050,000
Exercised during the year, number of options and rights | shares (156,250)   (6,613,000)
Expired during the year, number of options and rights | shares (7,481,867)   (975,000)
Balance, number of options and rights | shares 43,789,083 35,300,000 25,450,000
Exercisable at end of year, number of options and rights | shares 24,354,341 20,024,203 10,842,234
Balance, weighted average exercise price | $ / shares $ 0.89 $ 1.04 $ 1.16
To employees and directors under the LTIP and NED Plan, weighted average exercise price | $ / shares 0.65 0.3 0.58
Exercised during the year, weighted average exercise price | $ / shares 0.21   0.62
Expired during the year, weighted average exercise price | $ / shares 2.71   0.61
Balance, weighted average exercise price | $ / shares 0.51 0.89 1.04
Exercisable at end of year, weighted average exercise price | $ / shares $ 0.60 $ 1.19 $ 1.48