Restricted Cash and Investments (Details) - ZAR (R) R in Millions |
Jun. 30, 2025 |
Jun. 30, 2024 |
|---|---|---|
| Total Restricted cash and investments [Abstract] | ||
| Restricted cash | R 330 | R 489 |
| Restricted investments | 6,731 | 6,044 |
| Restricted cash and investments | 7,061 | 6,533 |
| Current restricted cash and investments | 46 | 39 |
| Non-current restricted cash and investments | R 7,015 | R 6,494 |