Restricted Investments - Disclosure of Environmental Trust Funds (Details) - ZAR (R) R in Millions |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|---|---|---|---|
| Disclosure of financial assets [line items] | |||
| Restricted investments | R 7,320 | R 6,731 | |
| Fixed deposits | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | 4,292 | 4,013 | |
| Cash equivalents | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | 177 | 79 | |
| Equity-linked deposits | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | 1,866 | 1,744 | |
| Government bonds | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | 439 | 427 | |
| Equity investments | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | 449 | 384 | |
| Collective investment scheme (unit trusts) | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | 80 | 69 | |
| Total environmental trust funds | |||
| Disclosure of financial assets [line items] | |||
| Restricted investments | R 7,303 | R 6,716 | R 6,030 |