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Cash and cash equivalents (Details) - ZAR (R)
R in Millions
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Cash and cash equivalents        
Cash and cash equivalents R 31,231 R 34,739 R 15,877  
Bank overdraft (243) (645) (58)  
Total cash and cash equivalents 30,988 34,094 R 15,819 R 17,039
In respect of various special purpose entities        
Cash and cash equivalents        
Cash restricted for use 513 187    
In respect of short-term rehabilitation commitments        
Cash and cash equivalents        
Cash restricted for use 106 99    
In respect of joint operations | Louisiana Integrated Polyethylene plant        
Cash and cash equivalents        
Cash restricted for use 245 0    
In respect of joint operations | Exploration and other ventures        
Cash and cash equivalents        
Cash restricted for use 69 105    
In respect of joint operations | Power plant        
Cash and cash equivalents        
Cash restricted for use 658 617    
Other restricted cash        
Cash and cash equivalents        
Cash restricted for use 1,318 799    
Rand        
Cash and cash equivalents        
Total cash and cash equivalents 14,994 14,281    
Euro        
Cash and cash equivalents        
Total cash and cash equivalents 2,159 2,602    
US dollar        
Cash and cash equivalents        
Total cash and cash equivalents 12,787 15,520    
Other currencies        
Cash and cash equivalents        
Total cash and cash equivalents R 1,048 R 1,691