v3.26.1
Other receivables and other payables - Keliber dividend obligation (Details) - Keliber
R in Millions
 12 Months Ended
Apr. 25, 2023
ZAR (R)
Dec. 31, 2025
ZAR (R)
$ / t
Dec. 31, 2024
ZAR (R)
$ / t
Dec. 31, 2023
ZAR (R)
$ / t
Disclosure of detailed information about business combination [line items]        
Cash flow % declared as dividend 40.00%      
Dividend payables R 792      
Average lithium hydroxide price (in USD per tonne) | $ / t   17,475 18,640 22,933
Real discount rate   9.83% 9.83% 9.83%
Inflation rate   2.50% 2.50% 2.50%
Movement In Dividend Obligation [Abstract]        
Balance at the beginning of the year   R 388 R 1,147 R 0
Initial recognition of the Keliber dividend obligation   0 0 792
(Gain)/loss on revised estimated cash flows   (427) (811) 287
Interest — unwinding of amortised cost   34 109 52
Foreign currency translation reserve   5 (57) 16
Balance at end of the year   R 0 R 388 R 1,147
Mining assets        
Disclosure of detailed information about business combination [line items]        
Life-of-mine   20 years 23 years 24 years