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Materials, energy and consumables used - Other commitment (Details)
R in Billions
 12 Months Ended
Jun. 30, 2025
ZAR (R)
MW
Jun. 30, 2025
ZAR (R)
MW
Jun. 30, 2024
ZAR (R)
agreement
MW
Jun. 30, 2023
ZAR (R)
Purchase commitments        
Amount of renewable energy secured, including PPA and self-builds 900 900    
Amount of renewable energy secured that achieved financial close   260    
Minimum        
Purchase commitments        
Remaining renewable energy contracts, term to be online 2 years      
Maximum        
Purchase commitments        
Remaining renewable energy contracts, term to be online 3 years      
Sasol Gas (Pty) Ltd        
Purchase commitments        
Purchase commitments | R R 25 R 25 R 32 R 38
Independent Power Producers        
Purchase commitments        
Number of Power Purchase Agreements signed | agreement     6  
Amount of renewable energy procured in agreement     600  
Contractual term for agreement signed     20 years  
Oxygen supply agreements for Secunda Operations        
Purchase commitments        
Off-take agreements | R R 210 R 210 R 211 R 219
Air Liquide        
Purchase commitments        
Agreement term (in years)   15 years