Taxation - Disclosure of Potential Future Tax Deductions (Details) - ZAR (R) R in Millions	Jun. 30, 2026	Jun. 30, 2025
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Amount of deferred tax not recognised, deductible temporary differences	R 16,420	R 19,742
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	50,001	53,889
Deductible temporary differences for which no deferred tax asset is recognised	46,173	52,361
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	7,746	9,504
Deductible temporary differences for which no deferred tax asset is recognised	3,668	9,504
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	581	570
Deductible temporary differences for which no deferred tax asset is recognised	581	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	(43,400)	(38,700)
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	(3,600)	(3,300)
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	(1,800)	(1,100)
Mponeng \| 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	(148)	139
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	(4,400)	(13,700)
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	0	(3,400)
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	R (2)	R (2,700)