v3.26.3
Derivative Financial Instruments - Disclosure of Derivative Financial Assets and Liabilities (Details) - ZAR (R)
R in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets R 2,391 R 568  
Non-current 1,571 236 R 453
Current 820 332 558
Derivative financial liabilities (4,531) (7,747)  
Non-current (1,075) (2,688) (609)
Current (3,456) (5,059) (1,502)
Net derivative financial instruments (2,140) (7,179)  
Unrealised losses included in other reserves, net of tax (1,457) (5,727) (1,389)
Unrealised losses included in other reserves, net of tax (1,367) (6,094) (1,252)
Realised losses included in revenue (9,649) (4,594) (1,265)
Unrealised losses on gold contracts recognised in other comprehensive income (4,137) (10,350) (1,734)
Gains/(losses) on derivatives (716) 85 572
Day one loss amortisation (182) (144) (119)
Total gains/(losses) on derivatives (898) (59) 453
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness (4,673) (9,751)  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 4,673 9,751  
US$ silver contracts      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 123 3  
Non-current 123 3  
Current 0 0  
Derivative financial liabilities (474) (148)  
Non-current (41) (39)  
Current (433) (109)  
Net derivative financial instruments (351) (145)  
Unrealised losses included in other reserves, net of tax 0 0  
Realised losses included in revenue 0 0 0
Unrealised losses on gold contracts recognised in other comprehensive income 0 0 0
Gains/(losses) on derivatives (901) (150) (98)
Day one loss amortisation 0 0 0
Total gains/(losses) on derivatives (901) (150) (98)
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness 0 0  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 0 0  
Foreign exchange hedging contracts      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 83 288  
Non-current 0 24  
Current 83 264  
Derivative financial liabilities 0 0  
Non-current 0 0  
Current 0 0  
Net derivative financial instruments 83 288  
Unrealised losses included in other reserves, net of tax 0 0  
Realised losses included in revenue 0 0 0
Unrealised losses on gold contracts recognised in other comprehensive income 0 0 0
Gains/(losses) on derivatives 243 235 670
Day one loss amortisation 0 0 0
Total gains/(losses) on derivatives 243 235 670
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness 0 0  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 0 0  
US$ Copper Swaps      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 0    
Non-current 0    
Current 0    
Derivative financial liabilities 0    
Non-current 0    
Current 0    
Net derivative financial instruments 0    
Unrealised losses included in other reserves, net of tax 0    
Realised losses included in revenue 0    
Unrealised losses on gold contracts recognised in other comprehensive income 0    
Gains/(losses) on derivatives (58)    
Day one loss amortisation 0    
Total gains/(losses) on derivatives (58)    
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness 0    
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 0    
Rand Gold Forward Hedging Contracts      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 4 30  
Non-current 1 14  
Current 3 16  
Derivative financial liabilities (942) (4,279)  
Non-current (137) (675)  
Current (805) (3,604)  
Net derivative financial instruments (938) (4,249)  
Unrealised losses included in other reserves, net of tax (718) (3,405)  
Realised losses included in revenue (6,202) (3,910) (1,215)
Unrealised losses on gold contracts recognised in other comprehensive income (2,930) (6,674) (1,580)
Gains/(losses) on derivatives 0 0 0
Day one loss amortisation (26) (83) (114)
Total gains/(losses) on derivatives (26) (83) (114)
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness (2,930) (6,674)  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 2,930 6,674  
US$ Gold Forward Hedging Contracts      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 0 5  
Non-current 0 3  
Current 0 2  
Derivative financial liabilities (287) (716)  
Non-current (22) (166)  
Current (265) (550)  
Net derivative financial instruments (287) (711)  
Unrealised losses included in other reserves, net of tax (256) (731)  
Realised losses included in revenue (847) (459) (50)
Unrealised losses on gold contracts recognised in other comprehensive income (455) (970) (310)
Gains/(losses) on derivatives 0 0 0
Day one loss amortisation (4) (11) (11)
Total gains/(losses) on derivatives (4) (11) (11)
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness (455) (970)  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 455 970  
Rand Gold Collars Contracts      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 1,914 207  
Non-current 1,305 164  
Current 609 43  
Derivative financial liabilities (2,086) (2,082)  
Non-current (587) (1,492)  
Current (1,499) (590)  
Net derivative financial instruments (172) (1,875)  
Unrealised losses included in other reserves, net of tax 69 (1,468)  
Realised losses included in revenue (2,003) (178) 0
Unrealised losses on gold contracts recognised in other comprehensive income (188) (2,155) 141
Gains/(losses) on derivatives 0 0 0
Day one loss amortisation (131) (40) 5
Total gains/(losses) on derivatives (131) (40) 5
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness (661) (1,596)  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness 661 1,596  
US Gold Collars Contracts      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 267 35  
Non-current 142 28  
Current 125 7  
Derivative financial liabilities (742) (522)  
Non-current (288) (316)  
Current (454) (206)  
Net derivative financial instruments (475) (487)  
Unrealised losses included in other reserves, net of tax (462) (490)  
Realised losses included in revenue (597) (47) 0
Unrealised losses on gold contracts recognised in other comprehensive income (564) (551) 15
Gains/(losses) on derivatives 0 0 0
Day one loss amortisation (21) (10) 1
Total gains/(losses) on derivatives (21) (10) R 1
Hedge effectiveness      
Changes in the fair value of the hedging instrument used as the basis for recognising hedge ineffectiveness (627) (511)  
Changes in the fair value of the hedged item used as the basis for recognising hedge ineffectiveness R 627 R 511