v3.26.1
Financial risk management and financial instruments - Currency Exposure (Details) - Exchange rate - ZAR (R)
R in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Financial risk management and financial instruments      
Percentage of change in significant exposure used for sensitivity analysis 10.00% 10.00%  
Euro      
Financial risk management and financial instruments      
Net exposure R (5,437) R 79  
Equity impact of decrease in risk exposure (544) 8 R 171
Income statement impact of decrease in risk exposure (544) 8 171
Euro | External balances      
Financial risk management and financial instruments      
Net exposure on assets 2,931 2,035  
Net exposure on liabilities (277) (547)  
Net exposure 2,654 1,488  
Euro | Balances between group companies      
Financial risk management and financial instruments      
Net exposure (8,091) (1,409)  
US Dollar      
Financial risk management and financial instruments      
Net exposure 29,379 20,576  
Equity impact of decrease in risk exposure 2,938 2,058 2,740
Income statement impact of decrease in risk exposure 2,938 2,058 R 2,740
US Dollar | External balances      
Financial risk management and financial instruments      
Net exposure on assets 4,494 5,340  
Net exposure on liabilities (6,779) (3,631)  
Net exposure (2,285) 1,709  
US Dollar | Balances between group companies      
Financial risk management and financial instruments      
Net exposure 31,664 18,867  
Trade and other payables | Euro | External balances      
Financial risk management and financial instruments      
Net exposure on liabilities (277) (547)  
Trade and other payables | US Dollar | External balances      
Financial risk management and financial instruments      
Net exposure on liabilities (6,779) (3,631)  
Long-term receivables | Euro | External balances      
Financial risk management and financial instruments      
Net exposure on assets 5 127  
Long-term receivables | US Dollar | External balances      
Financial risk management and financial instruments      
Net exposure on assets 994 645  
Trade and other receivables | Euro | External balances      
Financial risk management and financial instruments      
Net exposure on assets 451 429  
Trade and other receivables | US Dollar | External balances      
Financial risk management and financial instruments      
Net exposure on assets 2,213 3,912  
Cash and cash equivalents | Euro | External balances      
Financial risk management and financial instruments      
Net exposure on assets 2,475 1,479  
Cash and cash equivalents | US Dollar | External balances      
Financial risk management and financial instruments      
Net exposure on assets R 1,287 R 783