XML 262 R190.htm IDEA: XBRL DOCUMENT v3.23.2
Financial risk management and financial instruments - Significant Exchange Rates (Details)
12 Months Ended
Jun. 30, 2023
R / €
Jun. 30, 2023
R / €
R / $
Jun. 30, 2022
R / €
Jun. 30, 2022
R / €
R / $
Jun. 30, 2023
R / $
Jun. 30, 2022
R / $
Financial risk management and financial instruments            
Average rate 18.62 17.77 17.15 15.21    
Closing rate 20.55 20.55 17.07 17.07 18.83 16.28