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CASH AND CASH EQUIVALENTS (Details) - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Disclosure of financial assets [line items]        
Cash on hand R 100.5 R 63.5    
Access deposits and income funds 2,069.2 1,632.3    
Restricted cash 10.3 19.3    
Cash and cash equivalents 2,180.0 1,715.1 R 279.5 R 302.1
Interest earned on cash and cash equivalents R 108.7 R 63.1 R 16.9  
Effective annual yields 4.00% 5.60%    
Environmental rehabilitation [member]        
Disclosure of financial assets [line items]        
Restricted cash R 5.2      
Various utilities [member]        
Disclosure of financial assets [line items]        
Restricted cash R 5.1