| Voting power of non-controlling interests  | 
                                        |||||
Subsidiaries with non-controlling interests  | 
                                          Nature of business  | 
                                          Principal place of business  | 
                                          2024 %  | 
                                          2023 %  | 
                                        |
| Subsidiaries with equity shareholders | |||||
| Eyesizwe | BEE structured entity | Gauteng | 75.14 | 75.14 | |
| Tsitsikamma SPV | Renewable energy | Eastern Cape | 25.00 | 25.00 | |
| Amakhala SPV1 | Renewable energy | Eastern Cape | 5.00 | ||
| Subsidiaries with share option holders |                                                | 
                                                                                           | 
											                                               | 
											                                               | 
                                        |
| Amakhala SPV1 | Renewable energy | Eastern Cape |                                                | 
                                            5.00 | |
| 1 | On 30 April 2024, the share option holders of Amakhala SPV exercised their share options becoming true equity shareholders. | 
Profit allocated to NCI  | 
OCI allocated to NCI  | 
Dividends and distributions paid to NCI  | 
Accumulated NCI  | 
||||||||
| 2024 Rm  | 
2023 Rm  | 
2024 Rm  | 
2023 Rm  | 
2024 Rm  | 
2023 Rm  | 
2024 Rm  | 
2023 Rm  | 
||||
| Subsidiaries with equity shareholders | 2 346 | 3 411 | (26) | 44 | (1 935) | (1 855) | 14 563 | 14 119 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Eyesizwe | 2 318 | 3 399 | (22) | 47 | (1 893) | 1 831) | 14 243 | 13 841 | |||
| Tsitsikamma SPV | 25 | 12 | (3) | (3) | (39) | (24) | 263 | 278 | |||
| Amakhala SPV | 3 | (1) | (3) | 57 | |||||||
| Subsidiaries with share option holders | 41 | ||||||||||
| Amakhala SPV | 41 | ||||||||||
| Total NCIs | 2 346 | 3 411 | (26) | 44 | (1 935) | (1 855) | 14 563 | 14 160 | |||
| 1 | On 30 April 2024, the share option holders of Amakhala SPV exercised their share options becoming true equity shareholders. | 
The summarised financial information set out below relates to the subsidiaries in which NCI share.
| Amakhala SPV | Tsitsikamma SPV | Eyesizwe | ||||||
At 31 December  | 
                                          2024 Rm  | 
                                          2023 Rm  | 
                                          2024 Rm  | 
                                          2023 Rm  | 
                                          2024 Rm  | 
                                          2023 Rm  | 
                                        ||
| Statements of financial position | ||||||||
| Non-current assets | 3 867 | 2 986 | 3 157 | 18 622 | 18 164 | |||
| Current assets | 359 | 229 | 219 | 47 | 19 | |||
| Total assets | 4 226 | 3 215 | 3 376 | 18 669 | 18 183 | |||
| Non-current liabilities | 2 857 | 1 993 | 2 120 | 
                                               | 
                                            
                                               | 
                                        |||
| Current liabilities | 223 | 171 | 135 | 3 | 3 | |||
| Total liabilities | 3 080 | 2 164 | 2 255 | 3 | 3 | |||
| Net assets | 1 146 | 1 051 | 1 121 | 18 666 | 18 180 | |||
| Accumulated NCIs | 57 | 263 | 278 | 14 243 | 13 841 | |||
| Amakhala SPV | Tsitsikamma SPV | Eyesizwe | ||||||
| For the 8 months ended 31 December  | 
For the 12 months ended 31 December  | 
For the 12 months ended 31 December  | 
||||||
| 2024  Rm  | 
2023  Rm  | 
2024  Rm  | 
2023  Rm  | 
2024  Rm  | 
2023  Rm  | 
|||
| Statements of comprehensive income | ||||||||
| Revenue | 580 | 611 | 557 | |||||
| Net operating profit/(loss) | 287 | 308 | 250 | (14) | (6) | |||
| Income from equity-accounted investments | 3 098 | 4 528 | ||||||
| Net (finance costs)/income | (178) | (168) | (180) | 2 | 1 | |||
| Income tax expense | (35) | (42) | (23) | (1) | ||||
| Profit for the year | 74 | 98 | 47 | 3 085 | 4 523 | |||
| Other comprehensive (loss)/income | (31) | (11) | (10) | (29) | 63 | |||
| Total comprehensive income for the year | 43 | 87 | 37 | 3 056 | 4 586 | |||
| Profit attributable to: | 74 | 98 | 47 | 3 085 | 4 523 | |||
| Owners of the parent | 71 | 73 | 35 | 767 | 1 124 | |||
| Non-controlling interests | 3 | 25 | 12 | 2 318 | 3 399 | |||
| Other comprehensive (loss)/income attributable to: | (31) | (11) | (10) | (29) | 63 | |||
| Owners of the parent | (30) | (8) | (7) | (7) | 16 | |||
| Non-controlling interests | (1) | (3) | (3) | (22) | 47 | |||
| Total comprehensive income attributable to: | 43 | 87 | 37 | 3 056 | 4 586 | |||
| Owners of the parent | 41 | 65 | 28 | 760 | 1 140 | |||
| Non-controlling interests | 2 | 22 | 9 | 2 296 | 3 446 | |||
| Statements of cash flows | ||||||||
| Cash flows from operating activities | 115 | 284 | 218 | (12) | (3) | |||
| Cash flows from investing activities | 2 559 | 2 446 | ||||||
| Cash flows from financing activities | (253) | (278) | (188) | (2 519) | (2 431) | |||
| Net (decrease)/increase in cash and cash equivalents | (138) | 6 | 30 | 28 | 12 | |||
| Dividends paid to non-controlling interests: | (3) | (39) | (24) | (1 893) | (1 831) | |||