Taxation - Disclosure of Potential Future Tax Deductions (Details) - ZAR (R) R in Millions	Jun. 30, 2025	Jun. 30, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Amount of deferred tax not recognised, deductible temporary differences	R 19,742	R 19,140
Unredeemed capital expenditure available for utilisation against future mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	53,889	51,988
Deductible temporary differences for which no deferred tax asset is recognised	52,361	51,018
Tax losses carried forward utilisable against mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	9,504	9,296
Deductible temporary differences for which no deferred tax asset is recognised	9,504	9,231
Capital Gains Tax (CGT) losses available to be utilised against future CGT gains
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	570	570
Deductible temporary differences for which no deferred tax asset is recognised	570	570
Avgold \| Unredeemed capital expenditure available for utilisation against future mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	(38,661)	(34,368)
Avgold \| Tax losses carried forward utilisable against mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	(3,255)	(2,851)
Mine Waste Solutions \| Unredeemed capital expenditure available for utilisation against future mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	0	(635)
Hidden Valley \| Unredeemed capital expenditure available for utilisation against future mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	(13,700)	(16,650)
Moab Khotsong \| Unredeemed capital expenditure available for utilisation against future mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	(1,139)	(161)
PNG Operations \| Tax losses carried forward utilisable against mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	(2,744)	(3,670)
Australian Entities \| Tax losses carried forward utilisable against mining taxable income
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Potential future tax deductions	R (3,410)	R (2,623)