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Cash and cash equivalents (Details) - ZAR (R)
R in Millions
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Cash and cash equivalents        
Cash and cash equivalents R 40,577 R 28,981    
Restricted cash and cash equivalents 2,563 2,250    
Cash and cash equivalents, including restricted 43,140 31,231    
Bank overdraft (173) (243)    
Total cash and cash equivalents 42,967 30,988 R 34,094 R 15,819
Rand        
Cash and cash equivalents        
Total cash and cash equivalents 27,122 14,994    
Euro        
Cash and cash equivalents        
Total cash and cash equivalents 2,835 2,159    
US Dollar        
Cash and cash equivalents        
Total cash and cash equivalents 12,289 12,787    
Other currencies        
Cash and cash equivalents        
Total cash and cash equivalents R 721 R 1,048