v3.26.1
Borrowings and derivative financial instrument - R5.5 billion RCF (Details)
R in Millions
 12 Months Ended
Dec. 06, 2024
ZAR (R)
extension_option
Oct. 25, 2019
ZAR (R)
extension_option
Dec. 31, 2025
ZAR (R)
Dec. 31, 2024
ZAR (R)
Dec. 31, 2023
ZAR (R)
Aug. 16, 2024
ZAR (R)
Reconciliation Of Changes In Borrowings [Abstract]            
Balance at beginning of the year     R 41,687 R 36,618 R 22,728  
Loans raised     7,912 8,278 14,431  
Loans repaid     (4,883) (3,335) (1,323)  
Accrued interest     1,793 1,946 1,192  
Accrued interest paid     (2,086) (1,947) (1,175)  
Balance at end of the year     43,257 41,687 36,618  
Current portion of balance     (11,402) (552) (11,672)  
Non-current portion of balance     31,855 41,135 24,946  
R5.5 billion RCF            
Disclosure of detailed information about borrowings [line items]            
Face amount of debt   R 5,500        
Net debt to EBITDA threshold   2.0        
Term of facility   3 years        
Number of one-year extensions | extension_option   2        
Borrowings, term of extension   1 year        
Reconciliation Of Changes In Borrowings [Abstract]            
Balance at beginning of the year     0 4,000 0  
Loans raised     0 0 5,000  
Loans repaid     0 0 (1,000)  
Accrued interest     0 319 125  
Accrued interest paid     0 (319) (125)  
Inter bank transfer     0 (4,000) 0  
Balance at end of the year     0 0 4,000  
Current portion of balance     0 0 (4,000)  
Non-current portion of balance     0 0 0  
R5.5 billion RCF | - JIBAR | Minimum            
Disclosure of detailed information about borrowings [line items]            
Interest rate margin   2.40%        
R5.5 billion RCF | - JIBAR | Maximum            
Disclosure of detailed information about borrowings [line items]            
Interest rate margin   2.60%        
R6.5 billion RCF            
Disclosure of detailed information about borrowings [line items]            
Face amount of debt R 6,500         R 6,500
Term of facility 3 years          
Number of one-year extensions | extension_option 2          
Borrowings, term of extension 1 year          
Reconciliation Of Changes In Borrowings [Abstract]            
Balance at beginning of the year     3,000 0 0  
Loans raised     3,000 1,000 0  
Loans repaid     (3,500) (2,000) 0  
Accrued interest     248 97 0  
Accrued interest paid     (248) (97) 0  
Inter bank transfer     0 4,000 0  
Balance at end of the year     2,500 3,000 0  
Current portion of balance     0 0 0  
Non-current portion of balance     R 2,500 R 3,000 R 0