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Materials, energy and consumables used - Other commitment (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Purchase commitments      
Purchase commitments R 198,924 R 141,863 R 140,005
ORYX GTL      
Purchase commitments      
Off-take agreements 2,116 1,748  
Oxygen supply agreements for Secunda Operations      
Purchase commitments      
Off-take agreements R 86,528 85,013  
Air Liquide      
Purchase commitments      
Agreement term (in years) 15 years    
Investment In Republic Of Mozambique Pipeline Investment Company Pty Ltd Rompco [Member]      
Purchase commitments      
Purchase commitments R 25,400    
Previously reported      
Purchase commitments      
Purchase commitments   131,992 129,846
Revision      
Purchase commitments      
Purchase commitments   9,871 10,159
Within one year      
Purchase commitments      
Purchase commitments 50,642 28,603 23,782
One to five years      
Purchase commitments      
Purchase commitments 67,042 39,977 36,092
More than five years      
Purchase commitments      
Purchase commitments R 81,240 R 73,283 R 80,131