v3.26.1
Borrowings and derivative financial instrument - R6.5 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  
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  
Inter bank transfer     0 4,000 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  
Balance at end of the year     2,500 3,000 0  
Current portion of balance     0 0 0  
Non-current portion of balance     2,500 3,000 0  
R6.5 billion RCF | Minimum            
Disclosure of detailed information about borrowings [line items]            
Net debt to EBITDA threshold 1.0          
R6.5 billion RCF | Median            
Disclosure of detailed information about borrowings [line items]            
Net debt to EBITDA threshold 2.0          
R6.5 billion RCF | Maximum            
Disclosure of detailed information about borrowings [line items]            
Net debt to EBITDA threshold 3.0          
R6.5 billion RCF | Net Debt to EBITDA less than threshold | - JIBAR            
Disclosure of detailed information about borrowings [line items]            
Interest rate margin 2.20%          
R6.5 billion RCF | Net debt to EBITDA between min threshold & midrange | - JIBAR            
Disclosure of detailed information about borrowings [line items]            
Interest rate margin 2.40%          
R6.5 billion RCF | Net debt To EBITDA between midrange & max threshold | - JIBAR            
Disclosure of detailed information about borrowings [line items]            
Interest rate margin 2.60%          
R6.5 billion RCF | Net Debt to EBITDA above threshold | - JIBAR            
Disclosure of detailed information about borrowings [line items]            
Interest rate margin 2.80%          
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  
Inter bank transfer     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)  
Balance at end of the year     0 0 4,000  
Current portion of balance     0 0 (4,000)  
Non-current portion of balance     R 0 R 0 R 0  
R6.0 billion RCF            
Disclosure of detailed information about borrowings [line items]            
Face amount of debt           6,000
Capacity increase option           R 1,000
R500 Million RCF            
Disclosure of detailed information about borrowings [line items]            
Face amount of debt R 500