v3.26.3
Financial Risk Management - Foreign Exchange Risk (Details)
R in Millions
12 Months Ended
Jun. 30, 2026
ZAR (R)
Jun. 30, 2026
ZAR (R)
Jun. 30, 2026
ZAR (R)
Jun. 30, 2026
ZAR (R)
ZAR_per_AUD
Jun. 30, 2026
ZAR (R)
southAfricanRandPerUSDollar
Jun. 30, 2026
ZAR (R)
australianDollarPerPapuaNewGuineanKina
Jun. 30, 2025
ZAR (R)
Jun. 30, 2025
ZAR (R)
Jun. 30, 2025
ZAR (R)
ZAR_per_AUD
Jun. 30, 2025
ZAR (R)
southAfricanRandPerUSDollar
Jun. 30, 2025
ZAR (R)
australianDollarPerPapuaNewGuineanKina
Jun. 30, 2024
ZAR (R)
R / $
Jun. 30, 2026
R / $
Jun. 30, 2026
ZAR_per_AUD
Jun. 30, 2026
papuaNewGuineanKinaPerAustralianDollar
Jun. 30, 2026
australianDollarPerUSDollar
Jun. 30, 2025
R / $
Jun. 30, 2025
ZAR_per_AUD
Jun. 30, 2025
papuaNewGuineanKinaPerAustralianDollar
Jun. 30, 2025
australianDollarPerUSDollar
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Foreign exchange rate risk hedged limit (as a percent)     25.00%                                  
Foreign exchange risk exposure term 24 months                                      
Closing rate                       18.19 16.39 11.35 3.09   17.75 11.68 2.72  
Foreign exchange translation loss   R (2,385)         R (819)         R (943)                
Remeasurement of gold hedging contracts   4,727         (4,842)         R (499)                
Floor                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Closing daily foreign exchange rate       10.96 15.73 2.67     11.29 17.10 2.42                  
Cap                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Closing daily foreign exchange rate       12.05 18.20 3.20     12.41 19.75 2.75                  
Current derivative financial instruments | Not designated as hedging instrument | Financial assets at fair value through profit or loss, category [member]                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Financial assets R 83 83 R 83 R 83 R 83 R 83 264 R 264 R 264 R 264 R 264                  
Currency risk | Rand Against AUD | Financial assets                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 1,222 1,222 1,222 1,222 1,222 1,222 0 0 0 0 0                  
Increase by 4% (2024: 3%), impact on earnings   61         0                          
Decrease by 4% (2024: 3%), impact on earnings   (61)         0                          
Closing rate | ZAR_per_AUD                           11.35       0    
Currency risk | US$ against AU$ | Financial assets                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 3,937 3,937 R 3,937 3,937 3,937 3,937 2,796 R 2,796 2,796 2,796 2,796                  
Increase by 4% (2024: 3%), impact on earnings   197         112                          
Decrease by 4% (2024: 3%), impact on earnings   (197)         (112)                          
Closing rate | australianDollarPerUSDollar                               0.69       0.66
Currency risk | Financial assets | US$ against AU$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Reasonably possible increase in risk variable percent     5.00%         4.00%                        
Reasonably possible decrease in risk variable percent     5.00%         4.00%                        
Currency risk | Derivative financial instruments | Rand against US$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 83 83 R 83 83 83 83 288 R 288 288 288 288                  
Reasonably possible increase in risk variable percent     3.00%         4.00%                        
Increase by 4% (2024: 3%), impact on earnings   22         162                          
Reasonably possible decrease in risk variable percent     3.00%         4.00%                        
Decrease by 4% (2024: 3%), impact on earnings   (21)         (143)                          
Closing rate | R / $                         16.39       17.75      
Currency risk | Borrowings | Rand against US$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 6,604 6,604 R 6,604 6,604 6,604 6,604 1,777 R 1,777 1,777 1,777 1,777                  
Reasonably possible increase in risk variable percent     3.00%         4.00%                        
Increase by 4% (2024: 3%), impact on earnings   198         71                          
Reasonably possible decrease in risk variable percent     3.00%         4.00%                        
Decrease by 4% (2024: 3%), impact on earnings   (198)         (71)                          
Closing rate | R / $                         16.39       17.75      
Currency risk | Borrowings | US$ against AU$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 2,872 2,872 R 2,872 2,872 2,872 2,872 0 R 0 0 0 0                  
Reasonably possible increase in risk variable percent     5.00%                                  
Increase by 4% (2024: 3%), impact on earnings   144         0                          
Reasonably possible decrease in risk variable percent     5.00%                                  
Decrease by 4% (2024: 3%), impact on earnings   (144)         0                          
Closing rate | R / $                         0.69       0      
Currency risk | Contingent Consideration Liability (Eva) | US$ against AU$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 1,687 1,687 R 1,687 1,687 1,687 1,687 781 R 781 781 781 781                  
Reasonably possible increase in risk variable percent     5.00%         4.00%                        
Increase by 4% (2024: 3%), impact on earnings   84         31                          
Reasonably possible decrease in risk variable percent     5.00%         4.00%                        
Decrease by 4% (2024: 3%), impact on earnings   (84)         (31)                          
Closing rate | australianDollarPerUSDollar                               0.69       0.66
Currency risk | Contingent Consideration Liability (Mponeng) | Rand against US$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure 433 433 R 433 433 433 433 676 R 676 676 676 676                  
Reasonably possible increase in risk variable percent     3.00%         4.00%                        
Increase by 4% (2024: 3%), impact on earnings   13         27                          
Reasonably possible decrease in risk variable percent     3.00%         4.00%                        
Decrease by 4% (2024: 3%), impact on earnings   (13)         (27)                          
Closing rate | R / $                         16.39       17.75      
Currency risk | Contingent consideration liability | Rand Against AUD                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Reasonably possible increase in risk variable percent     5.00%         3.00%                        
Currency risk | Streaming Arrangements (MAC Copper) | US$ against AU$                                        
Disclosure of nature and extent of risks arising from financial instruments [line items]                                        
Risk exposure R 5,736 5,736 R 5,736 R 5,736 R 5,736 R 5,736 0 R 0 R 0 R 0 R 0                  
Reasonably possible increase in risk variable percent     5.00%                                  
Increase by 4% (2024: 3%), impact on earnings   287         0                          
Reasonably possible decrease in risk variable percent     5.00%                                  
Decrease by 4% (2024: 3%), impact on earnings   R (287)         R 0                          
Closing rate | australianDollarPerUSDollar                               0.69       0