v3.26.3
Contingent consideration narative (Details)
R in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Mar. 31, 2026
ZAR (R)
Oct. 31, 2025
ZAR (R)
Jun. 30, 2026
ZAR (R)
$ / oz
oz
Jun. 30, 2025
ZAR (R)
Jun. 30, 2024
ZAR (R)
Oct. 24, 2025
ZAR (R)
Oct. 06, 2022
USD ($)
Disclosure of contingent consideration liabilities [line items]              
Contingent consideration Liabilities Recognised     R 2,120 R 1,457 R 965    
Balance at end of year     2,120 1,457 965    
Payment of contingent consideration liability     (3,115) (338) (108)    
Contingent consideration remeasurement     634 830 484    
Translation     (168) 0      
Contingent consideration liabilities     239 481 115    
Contingent consideration liabilities     1,881 976 850    
Mponeng              
Disclosure of contingent consideration liabilities [line items]              
Contingent consideration remeasurement     56 427      
Eva Copper operations and related assets              
Disclosure of contingent consideration liabilities [line items]              
Contingent consideration remeasurement     64 403      
CSA NSR              
Disclosure of contingent consideration liabilities [line items]              
Contingent consideration remeasurement     350 0      
CSA Copper-linked              
Disclosure of contingent consideration liabilities [line items]              
Contingent consideration remeasurement     163 R 0      
CSA Copper-linked | First Contingent Copper Payment              
Disclosure of contingent consideration liabilities [line items]              
Contingent Consideration Payment     75        
Payment of contingent consideration liability   R (1,300)          
CSA Copper-linked | Second Contingent Copper Payment              
Disclosure of contingent consideration liabilities [line items]              
Contingent Consideration Payment     R 75        
Payment of contingent consideration liability R (1,200)            
Mponeng              
Disclosure of contingent consideration liabilities [line items]              
Discount rate applied to cash flow projections     11.10% 10.80%      
Contingent consideration Liabilities Recognised     R 433 R 676      
Balance at end of year     433 676      
Payment of contingent consideration liability     R (301) R (338) (108)    
Eva Copper operations and related assets              
Disclosure of contingent consideration liabilities [line items]              
Discount rate applied to cash flow projections     11.10% 11.40%      
Contingent consideration Liabilities Recognised     R 540 R 781      
Balance at end of year     540 781      
Payment of contingent consideration liability     R (256) 0 R 0    
Eva Copper operations and related assets | Cap              
Disclosure of contingent consideration liabilities [line items]              
Contingent Consideration Payable via 10% of net incremental revenue above US$3.80/Ib Cu | $             $ 30
Contingent Consideration Payable on New Copper Using US$0.03/Ib Cu | $             $ 30
CSA              
Disclosure of contingent consideration liabilities [line items]              
Discount rate applied to cash flow projections     7.00%     7.75%  
Contingent consideration Liabilities Recognised     R 1,147 0      
Balance at end of year     R 1,147 R 0      
MAC Copper              
Disclosure of contingent consideration liabilities [line items]              
Contingent consideration recognised as of acquisition date           R 3,312  
Mponeng operations and related assets              
Disclosure of contingent consideration liabilities [line items]              
Contingent Consideration Payable Upon Exceeding 250 000 Ounces Per Year | $ / oz     260        
Ounces Gold Production Per Annum | oz     250,000        
Contingent Consideration Payable on Ounces From Levels Below Current Infrastructure | $ / oz     20