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Financial risk management and financial instruments - Statement of Financial Position and Income Statement Impact (Details) - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Financial risk management and financial instruments      
Financial assets R 86,216 R 92,029  
Financial liabilities (168,266) (177,816)  
Net gain/(loss) on derivative instruments 2,364 3,287 R (18,325)
Commodity and currency derivatives, Embedded derivatives and Non-derivative financial instruments      
Financial risk management and financial instruments      
Financial assets 3,978 2,225  
Financial liabilities (619) (3,397)  
Net gain/(loss) on derivative instruments 2,364 3,287 (18,325)
Interest rate swap      
Financial risk management and financial instruments      
Net gain/(loss) on derivative instruments     1,029
Crude oil put options      
Financial risk management and financial instruments      
Financial assets 279 253  
Net gain/(loss) on derivative instruments (953) (507)  
Crude oil zero cost collar      
Financial risk management and financial instruments      
Net gain/(loss) on derivative instruments   3,953 (11,349)
Crude oil swap options      
Financial risk management and financial instruments      
Net gain/(loss) on derivative instruments     (5,140)
Crude oil futures      
Financial risk management and financial instruments      
Financial liabilities   (12)  
Net gain/(loss) on derivative instruments (180) 401 (1,049)
Ethane swap options      
Financial risk management and financial instruments      
Financial liabilities   (158)  
Net gain/(loss) on derivative instruments (17) (272) 279
Coal swap options      
Financial risk management and financial instruments      
Net gain/(loss) on derivative instruments   1,099 691
Other commodity derivatives      
Financial risk management and financial instruments      
Financial assets 5 10  
Financial liabilities (7)    
Net gain/(loss) on derivative instruments (62) 180 (593)
Forward exchange contracts      
Financial risk management and financial instruments      
Financial assets 711 133  
Financial liabilities (11) (353)  
Net gain/(loss) on derivative instruments 1,091 (1,339) (677)
Foreign exchange zero cost collars      
Financial risk management and financial instruments      
Financial assets 302 76  
Financial liabilities   (579)  
Net gain/(loss) on derivative instruments 810 (301) (1,580)
Convertible bond embedded derivative      
Financial risk management and financial instruments      
Financial liabilities (59) (1,302)  
Net gain/(loss) on derivative instruments 1,233 867  
Oxygen supply contract embedded derivative assets and liabilities      
Financial risk management and financial instruments      
Financial assets 508 516  
Financial liabilities (542) (993)  
Net gain/(loss) on derivative instruments 442 (794) R 64
Investments at fair value through profit or loss      
Financial risk management and financial instruments      
Financial assets R 2,173 R 1,237