Long-term provisions - Environmental provisions, Risk-free rates and Impact of changes to discount rates (Details) - Environmental - ZAR (R) R in Millions	Jun. 30, 2026	Jun. 30, 2025
Provisions
Assumed percentage change in discount rate	1.00%	1.00%
Increase in the discount rate	R (2,055)	R (1,991)
amount capitalised to property, plant and equipment	(1,008)	(666)
income recognised in income statement	(1,047)	(1,325)
Decrease in the discount rate	2,606	2,432
amount capitalised to property, plant and equipment	1,325	808
expense recognised in income statement	1,281	1,624
Investments restricted for mining rehabilitation purposes	950	885
Indemnities for mining rehabilitation purposes	R 2,907	R 2,907
South Africa \| Minimum
Provisions
Risk-free interest rate used to discount estimated cash flows related to provisions	7.50%	7.20%
South Africa \| Maximum
Provisions
Risk-free interest rate used to discount estimated cash flows related to provisions	8.50%	10.50%
Europe \| Minimum
Provisions
Risk-free interest rate used to discount estimated cash flows related to provisions	2.50%	2.00%
Europe \| Maximum
Provisions
Risk-free interest rate used to discount estimated cash flows related to provisions	3.20%	2.90%
United States of America \| Minimum
Provisions
Risk-free interest rate used to discount estimated cash flows related to provisions	3.70%	3.50%
United States of America \| Maximum
Provisions
Risk-free interest rate used to discount estimated cash flows related to provisions	4.60%	4.40%

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

The amount of effect on the long term provisions due to decrease in the discount rate.

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No definition available.

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- Definition

The amount of income recognised in income statement on the long term provisions due to decrease in the discount rate.

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- Definition

The amount capitalised to property, plant and equipment on the long term provisions due to decrease in the discount rate.

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- Definition

The amount of effect on the long term provisions due to increase in the discount rate.

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- Definition

The amount of income recognised in income statement on the long term provisions due to increase in the discount rate.

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- Definition

The amount capitalised to property, plant and equipment on the long term provisions due to increase in the discount rate.

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- Definition

The amount of indemnities for rehabilitation.

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- Definition

Investments restricted for mining rehabilitation purposes.

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- Definition

The assumed percentage change in the discount rate used to calculate the impact on the provision.

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- Definition

The risk free rates used to discount the estimated cash flows related to provisions.

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