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Trade and other receivables - Business segmentation (Details) - ZAR (R)
R in Millions
Jun. 30, 2018
Jun. 30, 2017
Disclosure of operating segments [line items]    
Trade and other receivables R 29,729 R 27,641
Mining    
Disclosure of operating segments [line items]    
Trade and other receivables 428 422
Exploration And Production International    
Disclosure of operating segments [line items]    
Trade and other receivables 736 743
Energy    
Disclosure of operating segments [line items]    
Trade and other receivables 11,487 8,323
Base Chemicals    
Disclosure of operating segments [line items]    
Trade and other receivables 6,308 5,562
Performance Chemicals    
Disclosure of operating segments [line items]    
Trade and other receivables 9,299 9,793
Group Functions    
Disclosure of operating segments [line items]    
Trade and other receivables R 1,471 R 2,798